Hi Luis Thank you for your nice reply. I write the message on the group because I think there is a problem with your receiving my messages with my email adress...
Hi all, Maybe one of you has the service doc for the Sorensen DCR40-35A power supply. I have bought one recently and would like to have at least the schematic....
I purchased a used Tek 2465b that had an HP10430A 500 Mhz passive probe in the pouch. The probe is not damaged and works well electrically, but is missing a...
I just got for the photograph The page cannot be displayed ... From: Howard Ashcraft To: hp_agilent_equipment@yahoogroups.com Sent: Sunday, February 01, 2009...
Here is the problem, i have several instruments in my lab, some of them have a parallel printer port (mostly R+S but also the 8753) while others support...
Any one have any information on the doubler in the 8657B? My 8657B works great from 1030MHz through 2060MHz but the level is about 10- 15dBm low from 0.1MHz...
usually most of the time the doublers used are passive most of the time a "bridge rectifier" circuit with amplifier stages tacked on, one thing i would check...
Thanks for the reply. There are two 8 pin surface mount IC's in a DIP type package that seem to function as an SPDT switch, one on the input and one on the...
OK I was digging a bit trough my pile of catalogs and datasheets of alpha parts, the part you have is a SPDT switch, it does not require a supply voltage per...
Joe, I have the service manual for the 8657B on my web site http://www.ko4bb.com/cgi-bin/manuals.pl I suspect the doubler is fine (otherwise the generator...
its been quite a bit since i messed around with the 8657B but as far as i remember they used the A7 Doubler box used in the 8643A/002 and implanted it in the...
Thanks all for your help. Didier, it is your manual that I am using. Unfortunately, it is very sparse on the doubler. Lothar, what you describe seems correct....
Lothar, Our emails 'crossed in the mail'. In the 8657B, the doubler is the A12 board. If you look up the part number above on the Agilent website, you can...
its correct, the doubler has its own ALC circuit and this could also be a source for trouble, you can use the spectrumalyzer and a homemade probe to trace your...
we had issues like this on RF designs in the past, after running 85/85 the insertion loss of the switches all of the sudden increased, we found the source to...
I looked up the 8643A on the Agilent website and downloaded the Assembly Level Repair manual. The part number for the doubler in the 8643A is different and,...
OK, I can't find the PDF. It was not attached to your email and I did not find it in the 'files' of the list. I am attaching the pictures of the doublers from...
In my volume 2 the A6 chapter begins with 8K-1 and runs through to 8K-42, this then jumps to 8K-100 (BD7 general information). Hope this helps ... From:...
Lothar, There IS a GPIB to USB converter made in Italy that should work. However, I tried to obtain one about a year ago and ran into a large amount of...
yes there is, you need a EEPROM programmer to do so, pull the CPU board and find the EEPROM on the A its a 2816 xicor part, carefully desolder the part and...
Thanks Lothar! ... board and find the EEPROM on the A its a 2816 xicor part, carefully desolder the part and straighten the pins, read out the contents, find ...
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