Check your cable, or better yet, look at the input signal with a oscilloscope. Something is fishy (missing return plus AC couple, too low amplitude, etc.).
I used a 33250 generator at 50mVrms and tried going from 80MHz down to 1MHz, even 100Hz and it changed the very next gate period every time (one period had partial counts, of course). The 53132A doesn't have the 'green button' that presets it to a known state, but it always powers up in the default state. Your signal might need some special handling - sensitivity, coupling, termination? Finally, if the counter is an 'eBay special', it might be bad. Run self-test and follow confidence tests from service manual. Jose -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of John Pease Sent: Tuesday, June 28, 2011 11:07 AM To: [email protected] Subject: [time-nuts] 53132A counter slow frequency update Hello, My new to me counter has a strange response when I change the input frequency. With the gate set to 1s, I can measure 100 MHz with plenty of digits. Then I change the frequency to 1 MHz and it takes several seconds to almost a minute for the display to change from 100 MHz to 1 MHz. The delay only occurs when I lower the input frequency quite a bit; 100 MHz to 10 MHz changes are displayed within 2 gate times. When I increase the frequency form 1 MHz to 100 MHz I always get the correct display after two gate times. This delay is proportional to the gate time; the updating is 10 times faster with 0.1 s gate time. Is this behavior typical for this counter? Thank you John Pease _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
