Dave, I think this comes from the negative logic which is used to switch on/off the relays of the SDR1000. Many relay solenoids are actually energized in the position "Standby" and de-energized, depending on settings, in the ON position. The ON/STANDBY switch is IMHO merely a kind of softswitch and not really a circuit breaker which however can be found in the upper left corner of the front panel.
vy 73 de SM6OMH Willi ----- Original Message ----- From: "David Ackrill" <[EMAIL PROTECTED]> To: "Douglas Shock" <[EMAIL PROTECTED]> Cc: <FlexRadio@flex-radio.biz> Sent: Saturday, September 30, 2006 12:13 PM Subject: Re: [Flexradio] clock ticking from sdr-1000 > Another strange aspect of the SDR1K is the current drawn when 'off'. > > When it is switched on, before connecting the console, it draws 0.8 > amp. If I switch the unit to off the current drawn goes up to 1.3 > amps! The really strange thing is that the fan is on in the 'on' > position, but off in the 'off' position... > > Doesn't happen on the older 0.5 Watt version, without a PA or a fan, > that drops to nothing, or, rather, no detectable current on the PSU > ammeter. > > Dave (G0DJA) > > Douglas Shock wrote: >> Why does my SDR-1000 sound like a ticking watch when powered off? Did I >> get >> more than I ordered here? >> >> Doug / K0ZU >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> /pipermail/flexradio_flex-radio.biz/attachments/20060929/d5c6e1b8/attachment.html >> _______________________________________________ >> FlexRadio mailing list >> FlexRadio@flex-radio.biz >> http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz >> Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ >> FlexRadio Homepage: http://www.flex-radio.com >> >> > > _______________________________________________ > FlexRadio mailing list > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > FlexRadio Homepage: http://www.flex-radio.com > _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
