On 13/02/2013 3:02 PM, Shane Morris wrote:
Ramesh,
Thank you - this'll prove to be invaluable information as I convert a HP T5630w thin client into use as an PMR connected PABX. I was wondering if you could comment on their average operational power draw - the official specs say 50Watts/ 4.16Amps, but a number of people have said in practice they can be run from a 1.5Amp supply.
<-- Yeh, I don't know why HP spec' these to require a 3 or 4A supply. I power mine directly off the station power supply (~ 13.8VDC) - measured quiescent current was ~ 650mA (it's been a while, so don't hold me to that folks!). IIRC, max current was around 950mA or so. I generally fuse mine with a 1.5A fuse. One thing that I forgot to mention in my previous note - I did try one of these in a full-duplex bench-test / using chan-usbradio (i.e., using DSP) - don't go there! - the HP does not have the "sllab" for a full-duplex setup. The other caveat is that I have only ever run one node with chan_simpleusb. One other tid-bit.... one of my FREE STAR* guys in the UK, told me that he was able to take a Wyse terminal and convert that in the same fashion as described for the HP. The last time I checked my local off-lease equipment supplier, they had a truck load of Wyse terminals for $10 a piece! Amateur Radio .... roll your sleeves up and enjoy! Cheers, R.