开云体育

S/N of the signal generator is 3623A01683 circa late 90's, LCD display.? Options Rev Pwr.? Worked swell for a decade. S/N of attenuator is 06102 Original symptom was output dropping 40 dB (with an

The unlock is due to the A7 module.? The problem seems to be in the 300-500 MHz oscillator.? Using the W1 jumper to set it to the low and high frequencies is supposed to give a 300 MHz total range

Update: The +15 issue turned out to be a bad adjustment pot. Replaced and it looks good now. Beginning to lose faith in old HP gear. The oven oscillator first had no output. Dirty power connector to

?Thanks. I’m pretty confident two RAM chips are bad as when I move them the reported fault moves with them. I just discovered that I cannot adjust the +15 supply and it is at the high end of

Peter - No help here, I just wanted to give you a data point: I have had one of these for a long time, and it sits unused for weeks or months between uses, and I have not had any issues. If there is

The connectors and PC B edge connectors are first suspect In these 1970s..1980s HP meters. Opening up and removing, reseating all the PC Cards , May fix it. Then see the connectors especially any

What a coincidence! I have just switched on my trusted HP8593E and it shows exactly the same problem. It had been running without problems for the last 10 years in my lab. Many thanks for the

Today I fired up my 3577A to begin to do some tests.? It has been sitting in my lab, fully environmentally controlled, for several years unpowered.? It was working perfectly when it was put away.

thank you for help. picture added. Am 13.12.2024 um 00:11 schrieb Yves Tardif via groups.io:

A friend sent me a failed HP8594E with the error message "ADC-2V FAILL" over the screen. I searched the network and most of the info tell me the power supply is failed. I opened the machine and saw

That's interesting that yours is the same. Yes I also found if I reduced the source power slightly everything was OK. I have the IF bandwidth set at auto rather than 4khz I've not noticed this with

Hi, When the Spectrum loses all its calibration constants, there is a chance that you will lose the synchronization of the display on the screen. You should try to do a "DEFAULT CAL DATA" and "CRT

Same for me, starting at 5Hz at 0dBm, the message takes a few seconds and appears. But if I put the signal at -1dBm, the message does not appear. But I noticed at 0dBm, that if I put my filter at

Done a bit more investigation. I found that it seems to be the bottom end of the sweep that causes an issue. With the sweep set at 10Hz - 500MHz it will sit there quite happily indefinitely, and

Hi, If you press ENTRY OFF, does the message disappear and appear again? I have an 8751A, and it works very well. If you connect Port#1 output directly to port R, by default, the RF output is at 0dBm,

I just acquired an 8751A 5Hz to 500MHz network analyser. We have one of these at work and I thought I get my own to use for personal stuff. So I've set it up for a basic through measurement with a

I have a repair of HP8593A with the following problems: The PSU was fail. now complete recapping, it works. The lithium? battery was rip and the memory empty. Now it have a fresh battery, but the shp

I agree with Chuck - easy to change.? But you could also tke a look at the sweep output with a scope to determine if it is st for 1V/GHz or .5V/GHz. Cheers! Bruce

Scott, thanks much for the info.? For my 8753ES can you or anyone else in this thread tell me if I want the reverse polarity cable (default) or the forward polarity cable for item No. 1?

Slight correction regarding Vladan's comment: This is absolutely correct for the 8753ES, but not for the 8753E which has the same physically wider design as the 8753D.? The difference between the