I know that with the ovenized oscillator the power supply (and therefore fan) are always on.
Thomas Knox > Date: Sat, 1 Feb 2014 22:50:13 -0500 > From: stanw...@verizon.net > To: time-nuts@febo.com > Subject: [time-nuts] New Acquisition: HP-53132A > > 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.