Re: [time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A Counter

2014-03-19 Thread John Allen
FYI: Here is the link to the 53132 CLIP. http://www.home.agilent.com/agilent/redirector.jspx?action=ref&cname=AGILENT _EDITORIAL&ckey=1119025&lc=eng&cc=US&nfr=-33788.536880944.00 It wasn't there last I checked. John K1AE ___ time-nuts mailing list -

Re: [time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A Counter

2014-03-19 Thread Tom Knox
19 Mar 2014 18:00:09 -0400 > To: time-nuts@febo.com > Subject: [time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A Counter > > I think I may need to clarify my prior posting. > > Both old and new Channel 3 boards work fine (and read correctly) in my older > 53132A cou

Re: [time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A Counter

2014-03-19 Thread Brooke Clarke
Hi Jim: I've seen a similar problem when one end of a ribbon cable connector is soldered to the wrong side of a PCB. Maybe you can unsolder a connector and install it on the other side? Have Fun, Brooke Clarke http://www.PRC68.com http://www.end2partygovernment.com/2012Issues.html James Robbi

Re: [time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A Counter

2014-03-19 Thread Brian Inglis
On 2014-03-19 16:00, James Robbins wrote: I think I may need to clarify my prior posting. Both old and new Channel 3 boards work fine (and read correctly) in my older 53132A counter. Both old and new Channel 3 boards fail to work properly in (and read 4x actual) the newer 53132A counter. So

[time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A Counter

2014-03-19 Thread James Robbins
I think I may need to clarify my prior posting. Both old and new Channel 3 boards work fine (and read correctly) in my older 53132A counter. Both old and new Channel 3 boards fail to work properly in (and read 4x actual) the newer 53132A counter. So I think the problem is in the newer main 531

Re: [time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A counter

2014-03-19 Thread Dave Martindale
No, the suggestion makes perfect sense. A 12 GHz input board likely has an internal prescaler with a division ratio that is 4 times that of a 3 GHz input board, in order to have the main counter running at the same internal frequency. For example, a 3 GHz input might divide by 32 while a 12 GHz i

Re: [time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A counter

2014-03-19 Thread Randy D. Hunt
On 3/19/2014 8:26 AM, James Robbins wrote: Thanks for everyone's help here. I have done some further sleuthing. I have a second 53132A which has a 3.0GHz Channel 3. So, I switched the new channel 3 board into the old 53132A and it reads properly. Then, I switched the old 3.0GHz Channel 3 bo

[time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A counter

2014-03-19 Thread James Robbins
Thanks for everyone's help here. I have done some further sleuthing. I have a second 53132A which has a 3.0GHz Channel 3. So, I switched the new channel 3 board into the old 53132A and it reads properly. Then, I switched the old 3.0GHz Channel 3 board into the new 53132A and it also read four

[time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A counter

2014-03-19 Thread James Robbins
Many thanks for all the replies. Nigel, thank you for the link. I did have this pdf, but was not reading it correctly. It has been suggested that perhaps the counter main board was "set up" (modified) for a 12GHz channel 3. That would have required some mods to the actual main board, but I a

Re: [time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A counter

2014-03-18 Thread J. Forster
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

Re: [time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A counter

2014-03-18 Thread GandalfG8
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

Re: [time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A counter

2014-03-18 Thread Tom Knox
: Tue, 18 Mar 2014 14:19:14 -0400 > Subject: [time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A counter > > 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

Re: [time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A counter

2014-03-18 Thread GandalfG8
Hi Jim According to the schematic in the 53132A service manual and the datasheet for the MB510 prescaler, the option 030 board is hard wired for a division ratio of 1/128, and that's the lowest division ratio shown for that prescaler. I've not fitted one of the original HP boards but have

Re: [time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A counter

2014-03-18 Thread Brian Inglis
On 2014-03-18 12:19, James Robbins wrote: 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

[time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A counter

2014-03-18 Thread James Robbins
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 resist