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Could not find 08590-60532, but the 1251-8912 is TE Connectiy 5-534204-5 Hope this helps [email protected]> wrote:

Can't provide too much, but typical failure on these is an ectrolytic near the AC input. It will cause the symptoms described. [email protected]> wrote:

Ken, Thanks ,as follows. 08590-60532 I believe that the connector on the card cage is the male and is a Amphenol 30x2 The part number from the CLIP is connector HP part 1251-8912 -this will be the

Dear Mike, No doubt I either have the 60x2 connector or can source one quickly. Please contact me today at WA1ESO@... John WA1ESO

I was also going to point out the 8594E has no YTF or SYTF.? Unfortunately HP tried to re-use the same block diagram for too many models. I wanted to add that cross-referencing the assembly numbers

The block diagram in the service manual is confusing because it includes many items that are not in my unit. So, I am pausing in my troubleshooting to create my own block diagram to reflect how my

1854-0247 TI SA-6325 2N3866A wrote:

------ Hi Rik, There is no YTF on a 8594E, block diagram shows that with a dotted box. Mixer is also single band. Greg's suggestion of looking at after the first mixer is good. One slight correction

Get me the board part number, and I will see what I can find [email protected]> wrote:

Does anyone out there know what 30x2 connector fits into the card cage connector receptacle on the HP 8590 series ( and probably others) SA ? I have a option 130 narrow BW pcb which i am working on

Bruce, Can you see the 0hz LO level—what is it—should be around 0-to -10db ? Mixers are not as easily shot as in the 8591 SA so that is good-but it is a possibility The 70 db front end attenuators

Rik, It sounds like your problem is a little deeper inside the instrument But if it ever turn out to be the step attenuator (HP part # 33321-60036) this experience might offer some past dealings with

OK - First confirm the gain of the YTF. There should be an expected signal level specified and the expected output (input to the next stage) - you should be able to calculate the stage gain; then

When I said I was feeding the First Converter, that was apparently icorrect. I was looking at the wrong block diagram. I am now looking at the block diagram for the 8594E. The block diagram does

Reasonable - 1st converter would be suspect, but can you inject signal into the 2nd converter (at appropriate level) to confirm low 1st converter gain? The CLIP should give expected signal level at

Nice 3D model too!

I am feeding the CAL OUT (300 mHz -20 dBM) directly to the input of the First Converter, using the hardcable that normally connects to the output of the attenuator. The HP-8594E is showing the signal

Sounds reasonable - I would "work" the attenuator a bit to be sure it is reliable - these attenuators can be erratic. Cheers! Bruce Quoting Rik Rasmussen <rikrasmussen@...>:

I have the CAL OUT connected to the front panel INPUT, with the 300 mHz -20 dBm signal. I have my tinySA Ultra connected to the output connector on the attenuator. The signal is reading -24 dBm on the

If you elect to inject a signat AFTER rather that THROUGH the attenuator be very careful - you risk damaging the first mixer. It is much safer to disconnect the attenuator input (sig gne side), inject