Jim, You were looking for a 0 Ohm resistor.
Sometimes HP did not, in fact, insert a 0 Ohm resistor component in later revs of some PCBs. They just added the default 0 Ohmers in etch, between two vias. Then, if someone wanted to open the link, the etch was cut. I guess it saved a couple of pennies. -John =============== > Further checking the service manual indicates that the main board treats > pins 9 and 10 of the ribbon cable as CH3code1 and CH3 code2 respectively > so > perhaps it's using these as identifiers and it might be worth checking > that > those signals are as expected. The prescaler board schematic shows 9 as > being connected to +12V and 10 to ground. > If you don't have access to the component level service manual let me know > and I'll send you a copy. > > Regards > > Nigel > GM8PZR > > > > > In a message dated 18/03/2014 18:20:09 GMT Standard Time, > jsrobb...@earthlink.net writes: > > I hope this is not too OT. > > > > I have acquired a 3.0GHz original Channel 3 board for my Agilent 53132A > counter. When installed, it reads four times (4x) the actual frequency. > I'm wondering if anyone has any experience with such an installation and > can > point me to some setup item or zero ohm resistor I'm supposed to install. > All that the manual says is to have it done by the factory. That will > cost > me more than the board itself. Many thanks. > > > > Jim Robbins > > N1JR > > _______________________________________________ > 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. > > _______________________________________________ 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.