I'm not sure I'd want to go quite this far, but here's one option...... http://gerrysweeney.com/hp-53131a-hard-power-switch-modification/ Regards Nigel GM8PZR In a message dated 02/02/2014 03:50:56 GMT Standard Time, stanw...@verizon.net writes:
Hello The Net, I just got in the counter and the fan is always ON, even with the front panel switch OFF. I looked in the manual but could not find anyway to change this. The counter has the standard internal 10 MHz reference, but I will be using a Trimble T'bolt GPS/DO for the external reference. The fan is part of the power supply module. I can see a possible need for it if a premium ovenized reference is always ON. But I do not have the premium internal reference. Is there a way to only allow the fan to be ON, if the front panel switch is ON ? Possibly a jumper setting ? Are there any key strokes to determine the software version, other than a check sum ? I do not have the standard HP serial number, with the" vintage" (manufacturing date code) code first. The unit was manufactured in Korea. Stan, W1LE on Cape Cod ZZZZz _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
