> If you download the 53132A component level information manual from the > Agilent site you'll find a schematic of the channel 3 board with values and J2 > pinout. The 53131A version of this manual doesn't seem to include this.
Excellent ! I only checked the 53131A datasheet without success. I'm checking the schematics... -----Message d'origine----- De : [email protected] [mailto:[email protected]] De la part de [email protected] Envoyé : dimanche 15 février 2009 18:42 À : [email protected] Objet : Re: [time-nuts] DIY Frequency extension for HP Agilent 53181A, 53131A or 53181A In a message dated 15/02/2009 17:05:21 GMT Standard Time, [email protected] writes: - What's the divider ratio used ? Perhaps /16 for 3 GHz, /32 for 5 GHz, and /64 for 12.4 GHz, but we really need to be sure. - What's the gain of each one of the four amplifiers present ? - How does the counter aware about the option used ? There is no "intelligence" on the option board, so, the counter may detect the type of prescaler with some pull-up or pull-down resistors somewhere. - What is the exact pinout for the J2 connector ? In order to get an answer, we need to find somebody with a genuine option board willing to spend an hour for the project... ------------------- If you download the 53132A component level information manual from the Agilent site you'll find a schematic of the channel 3 board with values and J2 pinout. The 53131A version of this manual doesn't seem to include this. regards Nigel GM8PZR _______________________________________________ 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.
