I am trying to prototype a RTCM based voting system with 2 RTCMs. I am using two JSLM2 Data Radios as transceivers. Using HP8920B service monitor to drive the radios. Good news: I can get both RTCMs and both radios to transmit. Test tones sound fine. Deviation good. Bad news: I can't get the RTCMs to register the incoming audio signal. There is no CTCSS in these radios, so that line is not connected. I have no COS signal connected either. Just audio in/out and PTT to the radio. I have confirmed the radios are receiving and are sending audio to the RTCMs using an oscilloscope. If anything the audio is way high in level. I measured 1v peak-to-peak when I think the RTCM is expecting 200mV. Tried the 20db pad with no effect. My suspicion is that the RTCM is a high-impedance input so the voltage is floating up in the absence of appropriate load (say from a 600 or 2k ohm). Second, I never get the green receive light on so I suspect there is actually some squelching or some such going on that is gating the audio signal off. Third, I have not been able to the the Squelch calibration or Diode calibration to behave. Does this require the diagnostic cable described in the interface to be used? The procedure is not documented well. I would love to see a know working config and wiring setup to confirm what I have done. -Doug- Current settings: Select the following values to View/Modify: S/W Version: 1.51 08/08/2017 System Uptime: 2095.0 Secs IP Address: 192.168.0.75 Netmask: 255.255.255.0 Gateway: 192.168.0.1 Primary DNS: 192.168.0.1 Secondary DNS: 192.168.0.1 DHCP: 1 VOTER Server IP: 104.197.124.184 VOTER Server UDP Port: 667 OUR UDP Port: 667 GPS Lock: 1 Connected: 0 COR: 0 EXT CTCSS IN: 1 PTT: 0 RSSI: 0 Current Samples / Sec.: 8000 Current Peak Audio Level: 112 Squelch Noise Gain Value: 0, Diode Cal. Value: 0, SQL pot 0 Current Time: Sat Nov 25, 2017 17:14:12.740 Last Rx Pkt System time: <System Time Not Set>, diff: -198435452 msec Last Rx Pkt Timestamp time: <System Time Not Set>, diff: 0 msec Last Rx Pkt index: 0, inbounds: 0 1 - Serial # (1162) (which is MAC ADDR 00:04:A3:00:04:8A) 2 - VOTER Server Address (FQDN) (xxx.org) 3 - VOTER Server Port (667), 4 - Local Port (Override) (0) 5 - Client Password (xxx1), 6 - Host Password (xxx2) 7 - Tx Buffer Length (3000) 8 - GPS Data Protocol (0=NMEA, 1=TSIP) (0) 9 - GPS Serial Polarity (0=Non-Inverted, 1=Inverted) (0) 10 - GPS PPS Polarity (0=Non-Inverted, 1=Inverted, 2=NONE) (0) 11 - GPS Baud Rate (4800) 12 - External CTCSS (0=Ignore, 1=Non-Inverted, 2=Inverted) (0) 13 - COR Type (0=Normal, 1=IGNORE COR, 2=No Receiver) (0) 14 - Debug Level (0) 15 - Alt. VOTER Server Address (FQDN) () 16 - Alt. VOTER Server Port (Override) (0) 17 - DSP/BEW Mode NOT SUPPORTED 18 - "Duplex Mode 3" (0=DISABLED, 1-255 Hang Time) (1/10 secs) (0) 19 - Simulcast Launch Delay (600) (approx 200 ns, 5 = 1us, > 0 to ENA SC) 97 - RX Level, 98 - Status, 99 - Save Values to EEPROM i - IP Parameters menu, o - Offline Mode Parameters menu q - Disconnect Remote Console Session, r - reboot system, d - diagnostics
Are you feeding unsquelched discriminator audio to the RTCM? The calibration needs to work before the RTCM will squelch properly. Cheers, Jesse
On Nov 25, 2017, at 10:18 AM, Doug Kingston <dpk@randomnotes.org> wrote:
I am trying to prototype a RTCM based voting system with 2 RTCMs. I am using two JSLM2 Data Radios as transceivers. Using HP8920B service monitor to drive the radios.
Good news: I can get both RTCMs and both radios to transmit. Test tones sound fine. Deviation good.
Bad news: I can't get the RTCMs to register the incoming audio signal. There is no CTCSS in these radios, so that line is not connected. I have no COS signal connected either. Just audio in/out and PTT to the radio.
I have confirmed the radios are receiving and are sending audio to the RTCMs using an oscilloscope. If anything the audio is way high in level. I measured 1v peak-to-peak when I think the RTCM is expecting 200mV. Tried the 20db pad with no effect. My suspicion is that the RTCM is a high-impedance input so the voltage is floating up in the absence of appropriate load (say from a 600 or 2k ohm).
Second, I never get the green receive light on so I suspect there is actually some squelching or some such going on that is gating the audio signal off.
Third, I have not been able to the the Squelch calibration or Diode calibration to behave. Does this require the diagnostic cable described in the interface to be used? The procedure is not documented well.
I would love to see a know working config and wiring setup to confirm what I have done.
-Doug-
Current settings:
Select the following values to View/Modify:
S/W Version: 1.51 08/08/2017 System Uptime: 2095.0 Secs IP Address: 192.168.0.75 Netmask: 255.255.255.0 Gateway: 192.168.0.1 Primary DNS: 192.168.0.1 Secondary DNS: 192.168.0.1 DHCP: 1 VOTER Server IP: 104.197.124.184 VOTER Server UDP Port: 667 OUR UDP Port: 667 GPS Lock: 1 Connected: 0 COR: 0 EXT CTCSS IN: 1 PTT: 0 RSSI: 0 Current Samples / Sec.: 8000 Current Peak Audio Level: 112 Squelch Noise Gain Value: 0, Diode Cal. Value: 0, SQL pot 0 Current Time: Sat Nov 25, 2017 17:14:12.740 Last Rx Pkt System time: <System Time Not Set>, diff: -198435452 msec Last Rx Pkt Timestamp time: <System Time Not Set>, diff: 0 msec Last Rx Pkt index: 0, inbounds: 0
1 - Serial # (1162) (which is MAC ADDR 00:04:A3:00:04:8A) 2 - VOTER Server Address (FQDN) (xxx.org) 3 - VOTER Server Port (667), 4 - Local Port (Override) (0) 5 - Client Password (xxx1), 6 - Host Password (xxx2) 7 - Tx Buffer Length (3000) 8 - GPS Data Protocol (0=NMEA, 1=TSIP) (0) 9 - GPS Serial Polarity (0=Non-Inverted, 1=Inverted) (0) 10 - GPS PPS Polarity (0=Non-Inverted, 1=Inverted, 2=NONE) (0) 11 - GPS Baud Rate (4800) 12 - External CTCSS (0=Ignore, 1=Non-Inverted, 2=Inverted) (0) 13 - COR Type (0=Normal, 1=IGNORE COR, 2=No Receiver) (0) 14 - Debug Level (0) 15 - Alt. VOTER Server Address (FQDN) () 16 - Alt. VOTER Server Port (Override) (0) 17 - DSP/BEW Mode NOT SUPPORTED 18 - "Duplex Mode 3" (0=DISABLED, 1-255 Hang Time) (1/10 secs) (0) 19 - Simulcast Launch Delay (600) (approx 200 ns, 5 = 1us, > 0 to ENA SC) 97 - RX Level, 98 - Status, 99 - Save Values to EEPROM i - IP Parameters menu, o - Offline Mode Parameters menu q - Disconnect Remote Console Session, r - reboot system, d - diagnostics
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Yes, I believe I am feeding unsquelched audio to the RTCM. How do you properly do the calibration procedure? -Doug- On Sat, Nov 25, 2017 at 9:28 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote:
Are you feeding unsquelched discriminator audio to the RTCM?
The calibration needs to work before the RTCM will squelch properly.
Cheers, Jesse
On Nov 25, 2017, at 10:18 AM, Doug Kingston <dpk@randomnotes.org> wrote:
I am trying to prototype a RTCM based voting system with 2 RTCMs. I am using two JSLM2 Data Radios as transceivers. Using HP8920B service monitor to drive the radios.
Good news: I can get both RTCMs and both radios to transmit. Test tones sound fine. Deviation good.
Bad news: I can't get the RTCMs to register the incoming audio signal. There is no CTCSS in these radios, so that line is not connected. I have no COS signal connected either. Just audio in/out and PTT to the radio.
I have confirmed the radios are receiving and are sending audio to the RTCMs using an oscilloscope. If anything the audio is way high in level. I measured 1v peak-to-peak when I think the RTCM is expecting 200mV. Tried the 20db pad with no effect. My suspicion is that the RTCM is a high-impedance input so the voltage is floating up in the absence of appropriate load (say from a 600 or 2k ohm).
Second, I never get the green receive light on so I suspect there is actually some squelching or some such going on that is gating the audio signal off.
Third, I have not been able to the the Squelch calibration or Diode calibration to behave. Does this require the diagnostic cable described in the interface to be used? The procedure is not documented well.
I would love to see a know working config and wiring setup to confirm what I have done.
-Doug-
Current settings:
Select the following values to View/Modify:
S/W Version: 1.51 08/08/2017 System Uptime: 2095.0 Secs IP Address: 192.168.0.75 Netmask: 255.255.255.0 Gateway: 192.168.0.1 Primary DNS: 192.168.0.1 Secondary DNS: 192.168.0.1 DHCP: 1 VOTER Server IP: 104.197.124.184 VOTER Server UDP Port: 667 OUR UDP Port: 667 GPS Lock: 1 Connected: 0 COR: 0 EXT CTCSS IN: 1 PTT: 0 RSSI: 0 Current Samples / Sec.: 8000 Current Peak Audio Level: 112 Squelch Noise Gain Value: 0, Diode Cal. Value: 0, SQL pot 0 Current Time: Sat Nov 25, 2017 17:14:12.740 Last Rx Pkt System time: <System Time Not Set>, diff: -198435452 msec Last Rx Pkt Timestamp time: <System Time Not Set>, diff: 0 msec Last Rx Pkt index: 0, inbounds: 0
1 - Serial # (1162) (which is MAC ADDR 00:04:A3:00:04:8A) 2 - VOTER Server Address (FQDN) (xxx.org) 3 - VOTER Server Port (667), 4 - Local Port (Override) (0) 5 - Client Password (xxx1), 6 - Host Password (xxx2) 7 - Tx Buffer Length (3000) 8 - GPS Data Protocol (0=NMEA, 1=TSIP) (0) 9 - GPS Serial Polarity (0=Non-Inverted, 1=Inverted) (0) 10 - GPS PPS Polarity (0=Non-Inverted, 1=Inverted, 2=NONE) (0) 11 - GPS Baud Rate (4800) 12 - External CTCSS (0=Ignore, 1=Non-Inverted, 2=Inverted) (0) 13 - COR Type (0=Normal, 1=IGNORE COR, 2=No Receiver) (0) 14 - Debug Level (0) 15 - Alt. VOTER Server Address (FQDN) () 16 - Alt. VOTER Server Port (Override) (0) 17 - DSP/BEW Mode NOT SUPPORTED 18 - "Duplex Mode 3" (0=DISABLED, 1-255 Hang Time) (1/10 secs) (0) 19 - Simulcast Launch Delay (600) (approx 200 ns, 5 = 1us, > 0 to ENA SC) 97 - RX Level, 98 - Status, 99 - Save Values to EEPROM i - IP Parameters menu, o - Offline Mode Parameters menu q - Disconnect Remote Console Session, r - reboot system, d - diagnostics
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I flip both middle switches (2&3) down. Wait for the LED to go solid. Flip them back. Cheers, Jesse
On Nov 25, 2017, at 10:33 AM, Doug Kingston <dpk@randomnotes.org> wrote:
Yes, I believe I am feeding unsquelched audio to the RTCM. How do you properly do the calibration procedure?
-Doug-
On Sat, Nov 25, 2017 at 9:28 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote: Are you feeding unsquelched discriminator audio to the RTCM?
The calibration needs to work before the RTCM will squelch properly.
Cheers, Jesse
On Nov 25, 2017, at 10:18 AM, Doug Kingston <dpk@randomnotes.org> wrote:
I am trying to prototype a RTCM based voting system with 2 RTCMs. I am using two JSLM2 Data Radios as transceivers. Using HP8920B service monitor to drive the radios.
Good news: I can get both RTCMs and both radios to transmit. Test tones sound fine. Deviation good.
Bad news: I can't get the RTCMs to register the incoming audio signal. There is no CTCSS in these radios, so that line is not connected. I have no COS signal connected either. Just audio in/out and PTT to the radio.
I have confirmed the radios are receiving and are sending audio to the RTCMs using an oscilloscope. If anything the audio is way high in level. I measured 1v peak-to-peak when I think the RTCM is expecting 200mV. Tried the 20db pad with no effect. My suspicion is that the RTCM is a high-impedance input so the voltage is floating up in the absence of appropriate load (say from a 600 or 2k ohm).
Second, I never get the green receive light on so I suspect there is actually some squelching or some such going on that is gating the audio signal off.
Third, I have not been able to the the Squelch calibration or Diode calibration to behave. Does this require the diagnostic cable described in the interface to be used? The procedure is not documented well.
I would love to see a know working config and wiring setup to confirm what I have done.
-Doug-
Current settings:
Select the following values to View/Modify:
S/W Version: 1.51 08/08/2017 System Uptime: 2095.0 Secs IP Address: 192.168.0.75 Netmask: 255.255.255.0 Gateway: 192.168.0.1 Primary DNS: 192.168.0.1 Secondary DNS: 192.168.0.1 DHCP: 1 VOTER Server IP: 104.197.124.184 VOTER Server UDP Port: 667 OUR UDP Port: 667 GPS Lock: 1 Connected: 0 COR: 0 EXT CTCSS IN: 1 PTT: 0 RSSI: 0 Current Samples / Sec.: 8000 Current Peak Audio Level: 112 Squelch Noise Gain Value: 0, Diode Cal. Value: 0, SQL pot 0 Current Time: Sat Nov 25, 2017 17:14:12.740 Last Rx Pkt System time: <System Time Not Set>, diff: -198435452 msec Last Rx Pkt Timestamp time: <System Time Not Set>, diff: 0 msec Last Rx Pkt index: 0, inbounds: 0
1 - Serial # (1162) (which is MAC ADDR 00:04:A3:00:04:8A) 2 - VOTER Server Address (FQDN) (xxx.org) 3 - VOTER Server Port (667), 4 - Local Port (Override) (0) 5 - Client Password (xxx1), 6 - Host Password (xxx2) 7 - Tx Buffer Length (3000) 8 - GPS Data Protocol (0=NMEA, 1=TSIP) (0) 9 - GPS Serial Polarity (0=Non-Inverted, 1=Inverted) (0) 10 - GPS PPS Polarity (0=Non-Inverted, 1=Inverted, 2=NONE) (0) 11 - GPS Baud Rate (4800) 12 - External CTCSS (0=Ignore, 1=Non-Inverted, 2=Inverted) (0) 13 - COR Type (0=Normal, 1=IGNORE COR, 2=No Receiver) (0) 14 - Debug Level (0) 15 - Alt. VOTER Server Address (FQDN) () 16 - Alt. VOTER Server Port (Override) (0) 17 - DSP/BEW Mode NOT SUPPORTED 18 - "Duplex Mode 3" (0=DISABLED, 1-255 Hang Time) (1/10 secs) (0) 19 - Simulcast Launch Delay (600) (approx 200 ns, 5 = 1us, > 0 to ENA SC) 97 - RX Level, 98 - Status, 99 - Save Values to EEPROM i - IP Parameters menu, o - Offline Mode Parameters menu q - Disconnect Remote Console Session, r - reboot system, d - diagnostics
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Mine never goes solid. It starts blinking more quickly but not as quickly as the heartbeat LED. I think that means the test failed. On Sat, Nov 25, 2017 at 10:34 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote:
I flip both middle switches (2&3) down. Wait for the LED to go solid. Flip them back.
Cheers, Jesse
On Nov 25, 2017, at 10:33 AM, Doug Kingston <dpk@randomnotes.org> wrote:
Yes, I believe I am feeding unsquelched audio to the RTCM. How do you properly do the calibration procedure?
-Doug-
On Sat, Nov 25, 2017 at 9:28 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote:
Are you feeding unsquelched discriminator audio to the RTCM?
The calibration needs to work before the RTCM will squelch properly.
Cheers, Jesse
On Nov 25, 2017, at 10:18 AM, Doug Kingston <dpk@randomnotes.org> wrote:
I am trying to prototype a RTCM based voting system with 2 RTCMs. I am using two JSLM2 Data Radios as transceivers. Using HP8920B service monitor to drive the radios.
Good news: I can get both RTCMs and both radios to transmit. Test tones sound fine. Deviation good.
Bad news: I can't get the RTCMs to register the incoming audio signal. There is no CTCSS in these radios, so that line is not connected. I have no COS signal connected either. Just audio in/out and PTT to the radio.
I have confirmed the radios are receiving and are sending audio to the RTCMs using an oscilloscope. If anything the audio is way high in level. I measured 1v peak-to-peak when I think the RTCM is expecting 200mV. Tried the 20db pad with no effect. My suspicion is that the RTCM is a high-impedance input so the voltage is floating up in the absence of appropriate load (say from a 600 or 2k ohm).
Second, I never get the green receive light on so I suspect there is actually some squelching or some such going on that is gating the audio signal off.
Third, I have not been able to the the Squelch calibration or Diode calibration to behave. Does this require the diagnostic cable described in the interface to be used? The procedure is not documented well.
I would love to see a know working config and wiring setup to confirm what I have done.
-Doug-
Current settings:
Select the following values to View/Modify:
S/W Version: 1.51 08/08/2017 System Uptime: 2095.0 Secs IP Address: 192.168.0.75 Netmask: 255.255.255.0 Gateway: 192.168.0.1 Primary DNS: 192.168.0.1 Secondary DNS: 192.168.0.1 DHCP: 1 VOTER Server IP: 104.197.124.184 VOTER Server UDP Port: 667 OUR UDP Port: 667 GPS Lock: 1 Connected: 0 COR: 0 EXT CTCSS IN: 1 PTT: 0 RSSI: 0 Current Samples / Sec.: 8000 Current Peak Audio Level: 112 Squelch Noise Gain Value: 0, Diode Cal. Value: 0, SQL pot 0 Current Time: Sat Nov 25, 2017 17:14:12.740 Last Rx Pkt System time: <System Time Not Set>, diff: -198435452 msec Last Rx Pkt Timestamp time: <System Time Not Set>, diff: 0 msec Last Rx Pkt index: 0, inbounds: 0
1 - Serial # (1162) (which is MAC ADDR 00:04:A3:00:04:8A) 2 - VOTER Server Address (FQDN) (xxx.org) 3 - VOTER Server Port (667), 4 - Local Port (Override) (0) 5 - Client Password (xxx1), 6 - Host Password (xxx2) 7 - Tx Buffer Length (3000) 8 - GPS Data Protocol (0=NMEA, 1=TSIP) (0) 9 - GPS Serial Polarity (0=Non-Inverted, 1=Inverted) (0) 10 - GPS PPS Polarity (0=Non-Inverted, 1=Inverted, 2=NONE) (0) 11 - GPS Baud Rate (4800) 12 - External CTCSS (0=Ignore, 1=Non-Inverted, 2=Inverted) (0) 13 - COR Type (0=Normal, 1=IGNORE COR, 2=No Receiver) (0) 14 - Debug Level (0) 15 - Alt. VOTER Server Address (FQDN) () 16 - Alt. VOTER Server Port (Override) (0) 17 - DSP/BEW Mode NOT SUPPORTED 18 - "Duplex Mode 3" (0=DISABLED, 1-255 Hang Time) (1/10 secs) (0) 19 - Simulcast Launch Delay (600) (approx 200 ns, 5 = 1us, > 0 to ENA SC) 97 - RX Level, 98 - Status, 99 - Save Values to EEPROM i - IP Parameters menu, o - Offline Mode Parameters menu q - Disconnect Remote Console Session, r - reboot system, d - diagnostics
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Yup. So your levels are either too hot or too low coming in. Throw a test tone on the receiver and measure your audio level with a scope or dmm on the input to the RTCM. Cheers, Jesse
On Nov 25, 2017, at 12:00 PM, Doug Kingston <dpk@randomnotes.org> wrote:
Mine never goes solid. It starts blinking more quickly but not as quickly as the heartbeat LED. I think that means the test failed.
On Sat, Nov 25, 2017 at 10:34 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote: I flip both middle switches (2&3) down. Wait for the LED to go solid. Flip them back.
Cheers, Jesse
On Nov 25, 2017, at 10:33 AM, Doug Kingston <dpk@randomnotes.org> wrote:
Yes, I believe I am feeding unsquelched audio to the RTCM. How do you properly do the calibration procedure?
-Doug-
On Sat, Nov 25, 2017 at 9:28 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote: Are you feeding unsquelched discriminator audio to the RTCM?
The calibration needs to work before the RTCM will squelch properly.
Cheers, Jesse
On Nov 25, 2017, at 10:18 AM, Doug Kingston <dpk@randomnotes.org> wrote:
I am trying to prototype a RTCM based voting system with 2 RTCMs. I am using two JSLM2 Data Radios as transceivers. Using HP8920B service monitor to drive the radios.
Good news: I can get both RTCMs and both radios to transmit. Test tones sound fine. Deviation good.
Bad news: I can't get the RTCMs to register the incoming audio signal. There is no CTCSS in these radios, so that line is not connected. I have no COS signal connected either. Just audio in/out and PTT to the radio.
I have confirmed the radios are receiving and are sending audio to the RTCMs using an oscilloscope. If anything the audio is way high in level. I measured 1v peak-to-peak when I think the RTCM is expecting 200mV. Tried the 20db pad with no effect. My suspicion is that the RTCM is a high-impedance input so the voltage is floating up in the absence of appropriate load (say from a 600 or 2k ohm).
Second, I never get the green receive light on so I suspect there is actually some squelching or some such going on that is gating the audio signal off.
Third, I have not been able to the the Squelch calibration or Diode calibration to behave. Does this require the diagnostic cable described in the interface to be used? The procedure is not documented well.
I would love to see a know working config and wiring setup to confirm what I have done.
-Doug-
Current settings:
Select the following values to View/Modify:
S/W Version: 1.51 08/08/2017 System Uptime: 2095.0 Secs IP Address: 192.168.0.75 Netmask: 255.255.255.0 Gateway: 192.168.0.1 Primary DNS: 192.168.0.1 Secondary DNS: 192.168.0.1 DHCP: 1 VOTER Server IP: 104.197.124.184 VOTER Server UDP Port: 667 OUR UDP Port: 667 GPS Lock: 1 Connected: 0 COR: 0 EXT CTCSS IN: 1 PTT: 0 RSSI: 0 Current Samples / Sec.: 8000 Current Peak Audio Level: 112 Squelch Noise Gain Value: 0, Diode Cal. Value: 0, SQL pot 0 Current Time: Sat Nov 25, 2017 17:14:12.740 Last Rx Pkt System time: <System Time Not Set>, diff: -198435452 msec Last Rx Pkt Timestamp time: <System Time Not Set>, diff: 0 msec Last Rx Pkt index: 0, inbounds: 0
1 - Serial # (1162) (which is MAC ADDR 00:04:A3:00:04:8A) 2 - VOTER Server Address (FQDN) (xxx.org) 3 - VOTER Server Port (667), 4 - Local Port (Override) (0) 5 - Client Password (xxx1), 6 - Host Password (xxx2) 7 - Tx Buffer Length (3000) 8 - GPS Data Protocol (0=NMEA, 1=TSIP) (0) 9 - GPS Serial Polarity (0=Non-Inverted, 1=Inverted) (0) 10 - GPS PPS Polarity (0=Non-Inverted, 1=Inverted, 2=NONE) (0) 11 - GPS Baud Rate (4800) 12 - External CTCSS (0=Ignore, 1=Non-Inverted, 2=Inverted) (0) 13 - COR Type (0=Normal, 1=IGNORE COR, 2=No Receiver) (0) 14 - Debug Level (0) 15 - Alt. VOTER Server Address (FQDN) () 16 - Alt. VOTER Server Port (Override) (0) 17 - DSP/BEW Mode NOT SUPPORTED 18 - "Duplex Mode 3" (0=DISABLED, 1-255 Hang Time) (1/10 secs) (0) 19 - Simulcast Launch Delay (600) (approx 200 ns, 5 = 1us, > 0 to ENA SC) 97 - RX Level, 98 - Status, 99 - Save Values to EEPROM i - IP Parameters menu, o - Offline Mode Parameters menu q - Disconnect Remote Console Session, r - reboot system, d - diagnostics
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I did a Firmware Reset by setting SW2-1. Now its lost my IP settings (not surprising). What are the default IP settings for a firmware reset RTCM? On Sat, Nov 25, 2017 at 11:27 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote:
Yup. So your levels are either too hot or too low coming in. Throw a test tone on the receiver and measure your audio level with a scope or dmm on the input to the RTCM.
Cheers, Jesse
On Nov 25, 2017, at 12:00 PM, Doug Kingston <dpk@randomnotes.org> wrote:
Mine never goes solid. It starts blinking more quickly but not as quickly as the heartbeat LED. I think that means the test failed.
On Sat, Nov 25, 2017 at 10:34 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote:
I flip both middle switches (2&3) down. Wait for the LED to go solid. Flip them back.
Cheers, Jesse
On Nov 25, 2017, at 10:33 AM, Doug Kingston <dpk@randomnotes.org> wrote:
Yes, I believe I am feeding unsquelched audio to the RTCM. How do you properly do the calibration procedure?
-Doug-
On Sat, Nov 25, 2017 at 9:28 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote:
Are you feeding unsquelched discriminator audio to the RTCM?
The calibration needs to work before the RTCM will squelch properly.
Cheers, Jesse
On Nov 25, 2017, at 10:18 AM, Doug Kingston <dpk@randomnotes.org> wrote:
I am trying to prototype a RTCM based voting system with 2 RTCMs. I am using two JSLM2 Data Radios as transceivers. Using HP8920B service monitor to drive the radios.
Good news: I can get both RTCMs and both radios to transmit. Test tones sound fine. Deviation good.
Bad news: I can't get the RTCMs to register the incoming audio signal. There is no CTCSS in these radios, so that line is not connected. I have no COS signal connected either. Just audio in/out and PTT to the radio.
I have confirmed the radios are receiving and are sending audio to the RTCMs using an oscilloscope. If anything the audio is way high in level. I measured 1v peak-to-peak when I think the RTCM is expecting 200mV. Tried the 20db pad with no effect. My suspicion is that the RTCM is a high-impedance input so the voltage is floating up in the absence of appropriate load (say from a 600 or 2k ohm).
Second, I never get the green receive light on so I suspect there is actually some squelching or some such going on that is gating the audio signal off.
Third, I have not been able to the the Squelch calibration or Diode calibration to behave. Does this require the diagnostic cable described in the interface to be used? The procedure is not documented well.
I would love to see a know working config and wiring setup to confirm what I have done.
-Doug-
Current settings:
Select the following values to View/Modify:
S/W Version: 1.51 08/08/2017 System Uptime: 2095.0 Secs IP Address: 192.168.0.75 Netmask: 255.255.255.0 Gateway: 192.168.0.1 Primary DNS: 192.168.0.1 Secondary DNS: 192.168.0.1 DHCP: 1 VOTER Server IP: 104.197.124.184 VOTER Server UDP Port: 667 OUR UDP Port: 667 GPS Lock: 1 Connected: 0 COR: 0 EXT CTCSS IN: 1 PTT: 0 RSSI: 0 Current Samples / Sec.: 8000 Current Peak Audio Level: 112 Squelch Noise Gain Value: 0, Diode Cal. Value: 0, SQL pot 0 Current Time: Sat Nov 25, 2017 17:14:12.740 Last Rx Pkt System time: <System Time Not Set>, diff: -198435452 msec Last Rx Pkt Timestamp time: <System Time Not Set>, diff: 0 msec Last Rx Pkt index: 0, inbounds: 0
1 - Serial # (1162) (which is MAC ADDR 00:04:A3:00:04:8A) 2 - VOTER Server Address (FQDN) (xxx.org) 3 - VOTER Server Port (667), 4 - Local Port (Override) (0) 5 - Client Password (xxx1), 6 - Host Password (xxx2) 7 - Tx Buffer Length (3000) 8 - GPS Data Protocol (0=NMEA, 1=TSIP) (0) 9 - GPS Serial Polarity (0=Non-Inverted, 1=Inverted) (0) 10 - GPS PPS Polarity (0=Non-Inverted, 1=Inverted, 2=NONE) (0) 11 - GPS Baud Rate (4800) 12 - External CTCSS (0=Ignore, 1=Non-Inverted, 2=Inverted) (0) 13 - COR Type (0=Normal, 1=IGNORE COR, 2=No Receiver) (0) 14 - Debug Level (0) 15 - Alt. VOTER Server Address (FQDN) () 16 - Alt. VOTER Server Port (Override) (0) 17 - DSP/BEW Mode NOT SUPPORTED 18 - "Duplex Mode 3" (0=DISABLED, 1-255 Hang Time) (1/10 secs) (0) 19 - Simulcast Launch Delay (600) (approx 200 ns, 5 = 1us, > 0 to ENA SC) 97 - RX Level, 98 - Status, 99 - Save Values to EEPROM i - IP Parameters menu, o - Offline Mode Parameters menu q - Disconnect Remote Console Session, r - reboot system, d - diagnostics
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They default to DHCP and if that fails i think its 192.168.1.11? Cant recall. I use a serial cable to get it going. Cheers, Jesse
On Nov 25, 2017, at 1:02 PM, Doug Kingston <dpk@randomnotes.org> wrote:
I did a Firmware Reset by setting SW2-1. Now its lost my IP settings (not surprising). What are the default IP settings for a firmware reset RTCM?
On Sat, Nov 25, 2017 at 11:27 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote: Yup. So your levels are either too hot or too low coming in. Throw a test tone on the receiver and measure your audio level with a scope or dmm on the input to the RTCM.
Cheers, Jesse
On Nov 25, 2017, at 12:00 PM, Doug Kingston <dpk@randomnotes.org> wrote:
Mine never goes solid. It starts blinking more quickly but not as quickly as the heartbeat LED. I think that means the test failed.
On Sat, Nov 25, 2017 at 10:34 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote: I flip both middle switches (2&3) down. Wait for the LED to go solid. Flip them back.
Cheers, Jesse
On Nov 25, 2017, at 10:33 AM, Doug Kingston <dpk@randomnotes.org> wrote:
Yes, I believe I am feeding unsquelched audio to the RTCM. How do you properly do the calibration procedure?
-Doug-
On Sat, Nov 25, 2017 at 9:28 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote: Are you feeding unsquelched discriminator audio to the RTCM?
The calibration needs to work before the RTCM will squelch properly.
Cheers, Jesse
On Nov 25, 2017, at 10:18 AM, Doug Kingston <dpk@randomnotes.org> wrote:
I am trying to prototype a RTCM based voting system with 2 RTCMs. I am using two JSLM2 Data Radios as transceivers. Using HP8920B service monitor to drive the radios.
Good news: I can get both RTCMs and both radios to transmit. Test tones sound fine. Deviation good.
Bad news: I can't get the RTCMs to register the incoming audio signal. There is no CTCSS in these radios, so that line is not connected. I have no COS signal connected either. Just audio in/out and PTT to the radio.
I have confirmed the radios are receiving and are sending audio to the RTCMs using an oscilloscope. If anything the audio is way high in level. I measured 1v peak-to-peak when I think the RTCM is expecting 200mV. Tried the 20db pad with no effect. My suspicion is that the RTCM is a high-impedance input so the voltage is floating up in the absence of appropriate load (say from a 600 or 2k ohm).
Second, I never get the green receive light on so I suspect there is actually some squelching or some such going on that is gating the audio signal off.
Third, I have not been able to the the Squelch calibration or Diode calibration to behave. Does this require the diagnostic cable described in the interface to be used? The procedure is not documented well.
I would love to see a know working config and wiring setup to confirm what I have done.
-Doug-
Current settings:
Select the following values to View/Modify:
S/W Version: 1.51 08/08/2017 System Uptime: 2095.0 Secs IP Address: 192.168.0.75 Netmask: 255.255.255.0 Gateway: 192.168.0.1 Primary DNS: 192.168.0.1 Secondary DNS: 192.168.0.1 DHCP: 1 VOTER Server IP: 104.197.124.184 VOTER Server UDP Port: 667 OUR UDP Port: 667 GPS Lock: 1 Connected: 0 COR: 0 EXT CTCSS IN: 1 PTT: 0 RSSI: 0 Current Samples / Sec.: 8000 Current Peak Audio Level: 112 Squelch Noise Gain Value: 0, Diode Cal. Value: 0, SQL pot 0 Current Time: Sat Nov 25, 2017 17:14:12.740 Last Rx Pkt System time: <System Time Not Set>, diff: -198435452 msec Last Rx Pkt Timestamp time: <System Time Not Set>, diff: 0 msec Last Rx Pkt index: 0, inbounds: 0
1 - Serial # (1162) (which is MAC ADDR 00:04:A3:00:04:8A) 2 - VOTER Server Address (FQDN) (xxx.org) 3 - VOTER Server Port (667), 4 - Local Port (Override) (0) 5 - Client Password (xxx1), 6 - Host Password (xxx2) 7 - Tx Buffer Length (3000) 8 - GPS Data Protocol (0=NMEA, 1=TSIP) (0) 9 - GPS Serial Polarity (0=Non-Inverted, 1=Inverted) (0) 10 - GPS PPS Polarity (0=Non-Inverted, 1=Inverted, 2=NONE) (0) 11 - GPS Baud Rate (4800) 12 - External CTCSS (0=Ignore, 1=Non-Inverted, 2=Inverted) (0) 13 - COR Type (0=Normal, 1=IGNORE COR, 2=No Receiver) (0) 14 - Debug Level (0) 15 - Alt. VOTER Server Address (FQDN) () 16 - Alt. VOTER Server Port (Override) (0) 17 - DSP/BEW Mode NOT SUPPORTED 18 - "Duplex Mode 3" (0=DISABLED, 1-255 Hang Time) (1/10 secs) (0) 19 - Simulcast Launch Delay (600) (approx 200 ns, 5 = 1us, > 0 to ENA SC) 97 - RX Level, 98 - Status, 99 - Save Values to EEPROM i - IP Parameters menu, o - Offline Mode Parameters menu q - Disconnect Remote Console Session, r - reboot system, d - diagnostics
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I figured this out... As you said, after a reset, the RTCM defaults to DHCP. The firmware reset also resets the serial number which is used to create the MAC address so your DHCP mapping will change if you change the serial number or its reset (default is 1234). Once you find the new DHCP assigned address, you can telnet in, change the serial number back and the RTCM will return to its original MAC address (and DHCP assigned IP normally). Wireshark is your friend... -Doug- On Sat, Nov 25, 2017 at 12:24 PM, Jesse Lloyd <ve7lyd@gmail.com> wrote:
They default to DHCP and if that fails i think its 192.168.1.11? Cant recall. I use a serial cable to get it going.
Cheers, Jesse
On Nov 25, 2017, at 1:02 PM, Doug Kingston <dpk@randomnotes.org> wrote:
I did a Firmware Reset by setting SW2-1. Now its lost my IP settings (not surprising). What are the default IP settings for a firmware reset RTCM?
On Sat, Nov 25, 2017 at 11:27 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote:
Yup. So your levels are either too hot or too low coming in. Throw a test tone on the receiver and measure your audio level with a scope or dmm on the input to the RTCM.
Cheers, Jesse
On Nov 25, 2017, at 12:00 PM, Doug Kingston <dpk@randomnotes.org> wrote:
Mine never goes solid. It starts blinking more quickly but not as quickly as the heartbeat LED. I think that means the test failed.
On Sat, Nov 25, 2017 at 10:34 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote:
I flip both middle switches (2&3) down. Wait for the LED to go solid. Flip them back.
Cheers, Jesse
On Nov 25, 2017, at 10:33 AM, Doug Kingston <dpk@randomnotes.org> wrote:
Yes, I believe I am feeding unsquelched audio to the RTCM. How do you properly do the calibration procedure?
-Doug-
On Sat, Nov 25, 2017 at 9:28 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote:
Are you feeding unsquelched discriminator audio to the RTCM?
The calibration needs to work before the RTCM will squelch properly.
Cheers, Jesse
On Nov 25, 2017, at 10:18 AM, Doug Kingston <dpk@randomnotes.org> wrote:
I am trying to prototype a RTCM based voting system with 2 RTCMs. I am using two JSLM2 Data Radios as transceivers. Using HP8920B service monitor to drive the radios.
Good news: I can get both RTCMs and both radios to transmit. Test tones sound fine. Deviation good.
Bad news: I can't get the RTCMs to register the incoming audio signal. There is no CTCSS in these radios, so that line is not connected. I have no COS signal connected either. Just audio in/out and PTT to the radio.
I have confirmed the radios are receiving and are sending audio to the RTCMs using an oscilloscope. If anything the audio is way high in level. I measured 1v peak-to-peak when I think the RTCM is expecting 200mV. Tried the 20db pad with no effect. My suspicion is that the RTCM is a high-impedance input so the voltage is floating up in the absence of appropriate load (say from a 600 or 2k ohm).
Second, I never get the green receive light on so I suspect there is actually some squelching or some such going on that is gating the audio signal off.
Third, I have not been able to the the Squelch calibration or Diode calibration to behave. Does this require the diagnostic cable described in the interface to be used? The procedure is not documented well.
I would love to see a know working config and wiring setup to confirm what I have done.
-Doug-
Current settings:
Select the following values to View/Modify:
S/W Version: 1.51 08/08/2017 System Uptime: 2095.0 Secs IP Address: 192.168.0.75 Netmask: 255.255.255.0 Gateway: 192.168.0.1 Primary DNS: 192.168.0.1 Secondary DNS: 192.168.0.1 DHCP: 1 VOTER Server IP: 104.197.124.184 VOTER Server UDP Port: 667 OUR UDP Port: 667 GPS Lock: 1 Connected: 0 COR: 0 EXT CTCSS IN: 1 PTT: 0 RSSI: 0 Current Samples / Sec.: 8000 Current Peak Audio Level: 112 Squelch Noise Gain Value: 0, Diode Cal. Value: 0, SQL pot 0 Current Time: Sat Nov 25, 2017 17:14:12.740 Last Rx Pkt System time: <System Time Not Set>, diff: -198435452 msec Last Rx Pkt Timestamp time: <System Time Not Set>, diff: 0 msec Last Rx Pkt index: 0, inbounds: 0
1 - Serial # (1162) (which is MAC ADDR 00:04:A3:00:04:8A) 2 - VOTER Server Address (FQDN) (xxx.org) 3 - VOTER Server Port (667), 4 - Local Port (Override) (0) 5 - Client Password (xxx1), 6 - Host Password (xxx2) 7 - Tx Buffer Length (3000) 8 - GPS Data Protocol (0=NMEA, 1=TSIP) (0) 9 - GPS Serial Polarity (0=Non-Inverted, 1=Inverted) (0) 10 - GPS PPS Polarity (0=Non-Inverted, 1=Inverted, 2=NONE) (0) 11 - GPS Baud Rate (4800) 12 - External CTCSS (0=Ignore, 1=Non-Inverted, 2=Inverted) (0) 13 - COR Type (0=Normal, 1=IGNORE COR, 2=No Receiver) (0) 14 - Debug Level (0) 15 - Alt. VOTER Server Address (FQDN) () 16 - Alt. VOTER Server Port (Override) (0) 17 - DSP/BEW Mode NOT SUPPORTED 18 - "Duplex Mode 3" (0=DISABLED, 1-255 Hang Time) (1/10 secs) (0) 19 - Simulcast Launch Delay (600) (approx 200 ns, 5 = 1us, > 0 to ENA SC) 97 - RX Level, 98 - Status, 99 - Save Values to EEPROM i - IP Parameters menu, o - Offline Mode Parameters menu q - Disconnect Remote Console Session, r - reboot system, d - diagnostics
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But, I still have the original audio problem. Tried connecting a AF generator with 200mv signal and still have no audio signal registering on the display. I really think this is something about the squelch setting. -Doug- On Sat, Nov 25, 2017 at 12:43 PM, Doug Kingston <dpk@randomnotes.org> wrote:
I figured this out...
As you said, after a reset, the RTCM defaults to DHCP. The firmware reset also resets the serial number which is used to create the MAC address so your DHCP mapping will change if you change the serial number or its reset (default is 1234). Once you find the new DHCP assigned address, you can telnet in, change the serial number back and the RTCM will return to its original MAC address (and DHCP assigned IP normally).
Wireshark is your friend...
-Doug-
On Sat, Nov 25, 2017 at 12:24 PM, Jesse Lloyd <ve7lyd@gmail.com> wrote:
They default to DHCP and if that fails i think its 192.168.1.11? Cant recall. I use a serial cable to get it going.
Cheers, Jesse
On Nov 25, 2017, at 1:02 PM, Doug Kingston <dpk@randomnotes.org> wrote:
I did a Firmware Reset by setting SW2-1. Now its lost my IP settings (not surprising). What are the default IP settings for a firmware reset RTCM?
On Sat, Nov 25, 2017 at 11:27 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote:
Yup. So your levels are either too hot or too low coming in. Throw a test tone on the receiver and measure your audio level with a scope or dmm on the input to the RTCM.
Cheers, Jesse
On Nov 25, 2017, at 12:00 PM, Doug Kingston <dpk@randomnotes.org> wrote:
Mine never goes solid. It starts blinking more quickly but not as quickly as the heartbeat LED. I think that means the test failed.
On Sat, Nov 25, 2017 at 10:34 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote:
I flip both middle switches (2&3) down. Wait for the LED to go solid. Flip them back.
Cheers, Jesse
On Nov 25, 2017, at 10:33 AM, Doug Kingston <dpk@randomnotes.org> wrote:
Yes, I believe I am feeding unsquelched audio to the RTCM. How do you properly do the calibration procedure?
-Doug-
On Sat, Nov 25, 2017 at 9:28 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote:
Are you feeding unsquelched discriminator audio to the RTCM?
The calibration needs to work before the RTCM will squelch properly.
Cheers, Jesse
On Nov 25, 2017, at 10:18 AM, Doug Kingston <dpk@randomnotes.org> wrote:
I am trying to prototype a RTCM based voting system with 2 RTCMs. I am using two JSLM2 Data Radios as transceivers. Using HP8920B service monitor to drive the radios.
Good news: I can get both RTCMs and both radios to transmit. Test tones sound fine. Deviation good.
Bad news: I can't get the RTCMs to register the incoming audio signal. There is no CTCSS in these radios, so that line is not connected. I have no COS signal connected either. Just audio in/out and PTT to the radio.
I have confirmed the radios are receiving and are sending audio to the RTCMs using an oscilloscope. If anything the audio is way high in level. I measured 1v peak-to-peak when I think the RTCM is expecting 200mV. Tried the 20db pad with no effect. My suspicion is that the RTCM is a high-impedance input so the voltage is floating up in the absence of appropriate load (say from a 600 or 2k ohm).
Second, I never get the green receive light on so I suspect there is actually some squelching or some such going on that is gating the audio signal off.
Third, I have not been able to the the Squelch calibration or Diode calibration to behave. Does this require the diagnostic cable described in the interface to be used? The procedure is not documented well.
I would love to see a know working config and wiring setup to confirm what I have done.
-Doug-
Current settings:
Select the following values to View/Modify:
S/W Version: 1.51 08/08/2017 System Uptime: 2095.0 Secs IP Address: 192.168.0.75 Netmask: 255.255.255.0 Gateway: 192.168.0.1 Primary DNS: 192.168.0.1 Secondary DNS: 192.168.0.1 DHCP: 1 VOTER Server IP: 104.197.124.184 VOTER Server UDP Port: 667 OUR UDP Port: 667 GPS Lock: 1 Connected: 0 COR: 0 EXT CTCSS IN: 1 PTT: 0 RSSI: 0 Current Samples / Sec.: 8000 Current Peak Audio Level: 112 Squelch Noise Gain Value: 0, Diode Cal. Value: 0, SQL pot 0 Current Time: Sat Nov 25, 2017 17:14:12.740 Last Rx Pkt System time: <System Time Not Set>, diff: -198435452 msec Last Rx Pkt Timestamp time: <System Time Not Set>, diff: 0 msec Last Rx Pkt index: 0, inbounds: 0
1 - Serial # (1162) (which is MAC ADDR 00:04:A3:00:04:8A) 2 - VOTER Server Address (FQDN) (xxx.org) 3 - VOTER Server Port (667), 4 - Local Port (Override) (0) 5 - Client Password (xxx1), 6 - Host Password (xxx2) 7 - Tx Buffer Length (3000) 8 - GPS Data Protocol (0=NMEA, 1=TSIP) (0) 9 - GPS Serial Polarity (0=Non-Inverted, 1=Inverted) (0) 10 - GPS PPS Polarity (0=Non-Inverted, 1=Inverted, 2=NONE) (0) 11 - GPS Baud Rate (4800) 12 - External CTCSS (0=Ignore, 1=Non-Inverted, 2=Inverted) (0) 13 - COR Type (0=Normal, 1=IGNORE COR, 2=No Receiver) (0) 14 - Debug Level (0) 15 - Alt. VOTER Server Address (FQDN) () 16 - Alt. VOTER Server Port (Override) (0) 17 - DSP/BEW Mode NOT SUPPORTED 18 - "Duplex Mode 3" (0=DISABLED, 1-255 Hang Time) (1/10 secs) (0) 19 - Simulcast Launch Delay (600) (approx 200 ns, 5 = 1us, > 0 to ENA SC) 97 - RX Level, 98 - Status, 99 - Save Values to EEPROM i - IP Parameters menu, o - Offline Mode Parameters menu q - Disconnect Remote Console Session, r - reboot system, d - diagnostics
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My squelch noise gain value of 0 from the output of 98 (status) seems wrong... On Sat, Nov 25, 2017 at 2:28 PM, Doug Kingston <dpk@randomnotes.org> wrote:
But, I still have the original audio problem. Tried connecting a AF generator with 200mv signal and still have no audio signal registering on the display. I really think this is something about the squelch setting.
-Doug-
On Sat, Nov 25, 2017 at 12:43 PM, Doug Kingston <dpk@randomnotes.org> wrote:
I figured this out...
As you said, after a reset, the RTCM defaults to DHCP. The firmware reset also resets the serial number which is used to create the MAC address so your DHCP mapping will change if you change the serial number or its reset (default is 1234). Once you find the new DHCP assigned address, you can telnet in, change the serial number back and the RTCM will return to its original MAC address (and DHCP assigned IP normally).
Wireshark is your friend...
-Doug-
On Sat, Nov 25, 2017 at 12:24 PM, Jesse Lloyd <ve7lyd@gmail.com> wrote:
They default to DHCP and if that fails i think its 192.168.1.11? Cant recall. I use a serial cable to get it going.
Cheers, Jesse
On Nov 25, 2017, at 1:02 PM, Doug Kingston <dpk@randomnotes.org> wrote:
I did a Firmware Reset by setting SW2-1. Now its lost my IP settings (not surprising). What are the default IP settings for a firmware reset RTCM?
On Sat, Nov 25, 2017 at 11:27 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote:
Yup. So your levels are either too hot or too low coming in. Throw a test tone on the receiver and measure your audio level with a scope or dmm on the input to the RTCM.
Cheers, Jesse
On Nov 25, 2017, at 12:00 PM, Doug Kingston <dpk@randomnotes.org> wrote:
Mine never goes solid. It starts blinking more quickly but not as quickly as the heartbeat LED. I think that means the test failed.
On Sat, Nov 25, 2017 at 10:34 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote:
I flip both middle switches (2&3) down. Wait for the LED to go solid. Flip them back.
Cheers, Jesse
On Nov 25, 2017, at 10:33 AM, Doug Kingston <dpk@randomnotes.org> wrote:
Yes, I believe I am feeding unsquelched audio to the RTCM. How do you properly do the calibration procedure?
-Doug-
On Sat, Nov 25, 2017 at 9:28 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote:
Are you feeding unsquelched discriminator audio to the RTCM?
The calibration needs to work before the RTCM will squelch properly.
Cheers, Jesse
On Nov 25, 2017, at 10:18 AM, Doug Kingston <dpk@randomnotes.org> wrote:
I am trying to prototype a RTCM based voting system with 2 RTCMs. I am using two JSLM2 Data Radios as transceivers. Using HP8920B service monitor to drive the radios.
Good news: I can get both RTCMs and both radios to transmit. Test tones sound fine. Deviation good.
Bad news: I can't get the RTCMs to register the incoming audio signal. There is no CTCSS in these radios, so that line is not connected. I have no COS signal connected either. Just audio in/out and PTT to the radio.
I have confirmed the radios are receiving and are sending audio to the RTCMs using an oscilloscope. If anything the audio is way high in level. I measured 1v peak-to-peak when I think the RTCM is expecting 200mV. Tried the 20db pad with no effect. My suspicion is that the RTCM is a high-impedance input so the voltage is floating up in the absence of appropriate load (say from a 600 or 2k ohm).
Second, I never get the green receive light on so I suspect there is actually some squelching or some such going on that is gating the audio signal off.
Third, I have not been able to the the Squelch calibration or Diode calibration to behave. Does this require the diagnostic cable described in the interface to be used? The procedure is not documented well.
I would love to see a know working config and wiring setup to confirm what I have done.
-Doug-
Current settings:
Select the following values to View/Modify:
S/W Version: 1.51 08/08/2017 System Uptime: 2095.0 Secs IP Address: 192.168.0.75 Netmask: 255.255.255.0 Gateway: 192.168.0.1 Primary DNS: 192.168.0.1 Secondary DNS: 192.168.0.1 DHCP: 1 VOTER Server IP: 104.197.124.184 VOTER Server UDP Port: 667 OUR UDP Port: 667 GPS Lock: 1 Connected: 0 COR: 0 EXT CTCSS IN: 1 PTT: 0 RSSI: 0 Current Samples / Sec.: 8000 Current Peak Audio Level: 112 Squelch Noise Gain Value: 0, Diode Cal. Value: 0, SQL pot 0 Current Time: Sat Nov 25, 2017 17:14:12.740 Last Rx Pkt System time: <System Time Not Set>, diff: -198435452 msec Last Rx Pkt Timestamp time: <System Time Not Set>, diff: 0 msec Last Rx Pkt index: 0, inbounds: 0
1 - Serial # (1162) (which is MAC ADDR 00:04:A3:00:04:8A) 2 - VOTER Server Address (FQDN) (xxx.org) 3 - VOTER Server Port (667), 4 - Local Port (Override) (0) 5 - Client Password (xxx1), 6 - Host Password (xxx2) 7 - Tx Buffer Length (3000) 8 - GPS Data Protocol (0=NMEA, 1=TSIP) (0) 9 - GPS Serial Polarity (0=Non-Inverted, 1=Inverted) (0) 10 - GPS PPS Polarity (0=Non-Inverted, 1=Inverted, 2=NONE) (0) 11 - GPS Baud Rate (4800) 12 - External CTCSS (0=Ignore, 1=Non-Inverted, 2=Inverted) (0) 13 - COR Type (0=Normal, 1=IGNORE COR, 2=No Receiver) (0) 14 - Debug Level (0) 15 - Alt. VOTER Server Address (FQDN) () 16 - Alt. VOTER Server Port (Override) (0) 17 - DSP/BEW Mode NOT SUPPORTED 18 - "Duplex Mode 3" (0=DISABLED, 1-255 Hang Time) (1/10 secs) (0) 19 - Simulcast Launch Delay (600) (approx 200 ns, 5 = 1us, > 0 to ENA SC) 97 - RX Level, 98 - Status, 99 - Save Values to EEPROM i - IP Parameters menu, o - Offline Mode Parameters menu q - Disconnect Remote Console Session, r - reboot system, d - diagnostics
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I believe this value changes when you calibrate it. You have to do that first. Cheers, Jesse
On Nov 25, 2017, at 3:36 PM, Doug Kingston <dpk@randomnotes.org> wrote:
My squelch noise gain value of 0 from the output of 98 (status) seems wrong...
On Sat, Nov 25, 2017 at 2:28 PM, Doug Kingston <dpk@randomnotes.org> wrote: But, I still have the original audio problem. Tried connecting a AF generator with 200mv signal and still have no audio signal registering on the display. I really think this is something about the squelch setting.
-Doug-
On Sat, Nov 25, 2017 at 12:43 PM, Doug Kingston <dpk@randomnotes.org> wrote: I figured this out...
As you said, after a reset, the RTCM defaults to DHCP. The firmware reset also resets the serial number which is used to create the MAC address so your DHCP mapping will change if you change the serial number or its reset (default is 1234). Once you find the new DHCP assigned address, you can telnet in, change the serial number back and the RTCM will return to its original MAC address (and DHCP assigned IP normally).
Wireshark is your friend...
-Doug-
On Sat, Nov 25, 2017 at 12:24 PM, Jesse Lloyd <ve7lyd@gmail.com> wrote: They default to DHCP and if that fails i think its 192.168.1.11? Cant recall. I use a serial cable to get it going.
Cheers, Jesse
On Nov 25, 2017, at 1:02 PM, Doug Kingston <dpk@randomnotes.org> wrote:
I did a Firmware Reset by setting SW2-1. Now its lost my IP settings (not surprising). What are the default IP settings for a firmware reset RTCM?
On Sat, Nov 25, 2017 at 11:27 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote: Yup. So your levels are either too hot or too low coming in. Throw a test tone on the receiver and measure your audio level with a scope or dmm on the input to the RTCM.
Cheers, Jesse
On Nov 25, 2017, at 12:00 PM, Doug Kingston <dpk@randomnotes.org> wrote:
Mine never goes solid. It starts blinking more quickly but not as quickly as the heartbeat LED. I think that means the test failed.
On Sat, Nov 25, 2017 at 10:34 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote: I flip both middle switches (2&3) down. Wait for the LED to go solid. Flip them back.
Cheers, Jesse
On Nov 25, 2017, at 10:33 AM, Doug Kingston <dpk@randomnotes.org> wrote:
Yes, I believe I am feeding unsquelched audio to the RTCM. How do you properly do the calibration procedure?
-Doug-
On Sat, Nov 25, 2017 at 9:28 AM, Jesse Lloyd <ve7lyd@gmail.com> wrote: Are you feeding unsquelched discriminator audio to the RTCM?
The calibration needs to work before the RTCM will squelch properly.
Cheers, Jesse
On Nov 25, 2017, at 10:18 AM, Doug Kingston <dpk@randomnotes.org> wrote:
I am trying to prototype a RTCM based voting system with 2 RTCMs. I am using two JSLM2 Data Radios as transceivers. Using HP8920B service monitor to drive the radios.
Good news: I can get both RTCMs and both radios to transmit. Test tones sound fine. Deviation good.
Bad news: I can't get the RTCMs to register the incoming audio signal. There is no CTCSS in these radios, so that line is not connected. I have no COS signal connected either. Just audio in/out and PTT to the radio.
I have confirmed the radios are receiving and are sending audio to the RTCMs using an oscilloscope. If anything the audio is way high in level. I measured 1v peak-to-peak when I think the RTCM is expecting 200mV. Tried the 20db pad with no effect. My suspicion is that the RTCM is a high-impedance input so the voltage is floating up in the absence of appropriate load (say from a 600 or 2k ohm).
Second, I never get the green receive light on so I suspect there is actually some squelching or some such going on that is gating the audio signal off.
Third, I have not been able to the the Squelch calibration or Diode calibration to behave. Does this require the diagnostic cable described in the interface to be used? The procedure is not documented well.
I would love to see a know working config and wiring setup to confirm what I have done.
-Doug-
Current settings:
Select the following values to View/Modify:
S/W Version: 1.51 08/08/2017 System Uptime: 2095.0 Secs IP Address: 192.168.0.75 Netmask: 255.255.255.0 Gateway: 192.168.0.1 Primary DNS: 192.168.0.1 Secondary DNS: 192.168.0.1 DHCP: 1 VOTER Server IP: 104.197.124.184 VOTER Server UDP Port: 667 OUR UDP Port: 667 GPS Lock: 1 Connected: 0 COR: 0 EXT CTCSS IN: 1 PTT: 0 RSSI: 0 Current Samples / Sec.: 8000 Current Peak Audio Level: 112 Squelch Noise Gain Value: 0, Diode Cal. Value: 0, SQL pot 0 Current Time: Sat Nov 25, 2017 17:14:12.740 Last Rx Pkt System time: <System Time Not Set>, diff: -198435452 msec Last Rx Pkt Timestamp time: <System Time Not Set>, diff: 0 msec Last Rx Pkt index: 0, inbounds: 0
1 - Serial # (1162) (which is MAC ADDR 00:04:A3:00:04:8A) 2 - VOTER Server Address (FQDN) (xxx.org) 3 - VOTER Server Port (667), 4 - Local Port (Override) (0) 5 - Client Password (xxx1), 6 - Host Password (xxx2) 7 - Tx Buffer Length (3000) 8 - GPS Data Protocol (0=NMEA, 1=TSIP) (0) 9 - GPS Serial Polarity (0=Non-Inverted, 1=Inverted) (0) 10 - GPS PPS Polarity (0=Non-Inverted, 1=Inverted, 2=NONE) (0) 11 - GPS Baud Rate (4800) 12 - External CTCSS (0=Ignore, 1=Non-Inverted, 2=Inverted) (0) 13 - COR Type (0=Normal, 1=IGNORE COR, 2=No Receiver) (0) 14 - Debug Level (0) 15 - Alt. VOTER Server Address (FQDN) () 16 - Alt. VOTER Server Port (Override) (0) 17 - DSP/BEW Mode NOT SUPPORTED 18 - "Duplex Mode 3" (0=DISABLED, 1-255 Hang Time) (1/10 secs) (0) 19 - Simulcast Launch Delay (600) (approx 200 ns, 5 = 1us, > 0 to ENA SC) 97 - RX Level, 98 - Status, 99 - Save Values to EEPROM i - IP Parameters menu, o - Offline Mode Parameters menu q - Disconnect Remote Console Session, r - reboot system, d - diagnostics
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The third problem has to be solved first. That will probably correct the others. The RTCM noise squelch circuit want to see unfiltered and unsquelched discriminator audio in order to work in voting applications. Check to insure that the audio out of your radios is discriminator audio. If not, you'll have to find another output or program the radio. On Sat, Nov 25, 2017 at 9:18 AM, Doug Kingston <dpk@randomnotes.org> wrote:
I am trying to prototype a RTCM based voting system with 2 RTCMs. I am using two JSLM2 Data Radios as transceivers. Using HP8920B service monitor to drive the radios.
Good news: I can get both RTCMs and both radios to transmit. Test tones sound fine. Deviation good.
Bad news: I can't get the RTCMs to register the incoming audio signal. There is no CTCSS in these radios, so that line is not connected. I have no COS signal connected either. Just audio in/out and PTT to the radio.
I have confirmed the radios are receiving and are sending audio to the RTCMs using an oscilloscope. If anything the audio is way high in level. I measured 1v peak-to-peak when I think the RTCM is expecting 200mV. Tried the 20db pad with no effect. My suspicion is that the RTCM is a high-impedance input so the voltage is floating up in the absence of appropriate load (say from a 600 or 2k ohm).
Second, I never get the green receive light on so I suspect there is actually some squelching or some such going on that is gating the audio signal off.
Third, I have not been able to the the Squelch calibration or Diode calibration to behave. Does this require the diagnostic cable described in the interface to be used? The procedure is not documented well.
I would love to see a know working config and wiring setup to confirm what I have done.
-Doug-
Current settings:
Select the following values to View/Modify:
S/W Version: 1.51 08/08/2017 System Uptime: 2095.0 Secs IP Address: 192.168.0.75 Netmask: 255.255.255.0 Gateway: 192.168.0.1 Primary DNS: 192.168.0.1 Secondary DNS: 192.168.0.1 DHCP: 1 VOTER Server IP: 104.197.124.184 VOTER Server UDP Port: 667 OUR UDP Port: 667 GPS Lock: 1 Connected: 0 COR: 0 EXT CTCSS IN: 1 PTT: 0 RSSI: 0 Current Samples / Sec.: 8000 Current Peak Audio Level: 112 Squelch Noise Gain Value: 0, Diode Cal. Value: 0, SQL pot 0 Current Time: Sat Nov 25, 2017 17:14:12.740 Last Rx Pkt System time: <System Time Not Set>, diff: -198435452 msec Last Rx Pkt Timestamp time: <System Time Not Set>, diff: 0 msec Last Rx Pkt index: 0, inbounds: 0
1 - Serial # (1162) (which is MAC ADDR 00:04:A3:00:04:8A) 2 - VOTER Server Address (FQDN) (xxx.org) 3 - VOTER Server Port (667), 4 - Local Port (Override) (0) 5 - Client Password (xxx1), 6 - Host Password (xxx2) 7 - Tx Buffer Length (3000) 8 - GPS Data Protocol (0=NMEA, 1=TSIP) (0) 9 - GPS Serial Polarity (0=Non-Inverted, 1=Inverted) (0) 10 - GPS PPS Polarity (0=Non-Inverted, 1=Inverted, 2=NONE) (0) 11 - GPS Baud Rate (4800) 12 - External CTCSS (0=Ignore, 1=Non-Inverted, 2=Inverted) (0) 13 - COR Type (0=Normal, 1=IGNORE COR, 2=No Receiver) (0) 14 - Debug Level (0) 15 - Alt. VOTER Server Address (FQDN) () 16 - Alt. VOTER Server Port (Override) (0) 17 - DSP/BEW Mode NOT SUPPORTED 18 - "Duplex Mode 3" (0=DISABLED, 1-255 Hang Time) (1/10 secs) (0) 19 - Simulcast Launch Delay (600) (approx 200 ns, 5 = 1us, > 0 to ENA SC) 97 - RX Level, 98 - Status, 99 - Save Values to EEPROM i - IP Parameters menu, o - Offline Mode Parameters menu q - Disconnect Remote Console Session, r - reboot system, d - diagnostics
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-- -- Tim
participants (3)
-
Doug Kingston -
Jesse Lloyd -
Tim Sawyer