I had also modified my HP 53132A but kept it extra simple and the modification allows me to use the counter normally..
On my HP 53132A I just mounted a toggle switch in one of the unused holes for the back panel BNC input connectors and wired the switch in series with the power connector. The front panel power/standby switch is unmodified and works as usual and if I want to completely power down I can reach around to the back and turn the added switch to the off position. Much easier than the other modifications I've seen and is easily removable if you want to sell the unit unmodified. -Arthur _______________________________________________ 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.