Jrv,

Well I looked at that previously and there is no mention of a calibration procedure for A17 the wattmeter board in that manual. There are two pots R7
Gain and R23 Offset. The question is how to set them. I thought that there might be someone on the board that has done this calibration before ...

Hello,

Does anyone have a calibration procedure for the R2001/8/9D internal terminated power meter? I am looking for adjustments for R7 and R23 Level and Offset.

Thank you,

Sam

Hi John,

Any chance you could measure those two testpoints for me and tell me what levels you see with regards to the test procedure. The sampler match test procedure is on page 2-16 of the service manual. Set the analyzer to 194MHz after power up and check the voltages at TP1 and TP2 and please ...

Does anyone have any experience troubleshooting the Counterlock PCB ASM in the 8591/8592A/8593 series spectrum analyzers? Or if you have access to one of these analyzers please read on....

I have a unit that occasionally loses lock. The C107 adjustment yields only +/- 150mV or so of signal at TP1 ...

Hello Wowbagger,

Well I was working on the1600S tonight calibrating the power meter. When I exited the routine and answered Y to the back up cal data when I restarted the system all I get is a beep every second and a blank screen.

Any suggestions?

Sam

I did a little more investigating and found the the T/R input is 3dB higher than the ANT input as displayed. I verified that the power term path from the T/R input to the output that goes to the IF is 40dB down. Injecting a signal past this point also shows 3dB high. I did notice that the path from ...

Hello Wowbagger,

The firmware version is 4.02.

I do have another question. I just ran through the Spectrum Analyzer calibration through the ANT port and note that I now have it tracking really well from 0dBm to -90dBm.

However , if for example I set a level of -40dBm and note that it is dead on ...

Wowbagger,

1600S a couple of questions:

When you go to exit any calibration screen it asked you if you want to save the data but answering y just appears to lock up the unit even though it appears to save the data requiring a power down of the unit, am I doing something wrong? There is no mention ...

Just for the sake of being complete. This issue is solved. In short replacement of the Headland HT-205 graphics control IC fixed the PCB and returned the display to normal. After the video card fix all that remained was a self test failure of the power meter function. The fix for this was simple. I ...

Hi Wowbagger,

I found equivalent ones at www.crossrf.com thanks to jry.

Also I ran the RF power meter cal and all of my errors are gone but when I exited the cal I was prompted with "Back up Cal Data y/n" it seems that no matter how I answer this I have to power the unit off and back on to regain ...

Hello Wowbagger and Group,

Does any one know of a surplus source for the unusual BNC female to SMA bulkhead mount for the Ant In and Gen Out connector used on the 1600S and probably other IFR analyzers?

Thank you,

Sam
W3OHM

Hello Wowbagger,

Well I finally got the video card repaired. It was a bad Headland Technology HT-205 160 pin QFP chip.
It looks like all of the instruments basic functions work except for one:

Now it appears that I have one last problem. The power meter fails test 16. Probably loss of Cal data ...

I checked with the lead engineer on the 1600, and she says the options are stored in the NVRAM as well.

Hi Wowbagger,

By NVRAM does she mean the Dallas DS1287 or the Memory card that has the DS1260 SmartBattery on it?

The DS1287 I can handle but how does one replace the DS1260 without losing ...

Hello,

I fall into the "newly registered" users and I wonder if it might be possible to be elevated to non moderation status. The reason I ask for this is I like you host a users group (mine is the LeCroy_Owners_Group on Yahoo! Groups) and wonder if that in itself is qualification enough to have a ...

Hello Wowbagger,

A few questions on the 1600S:

On the 1600S there is a Dallas DS1260 SMARTBattery on the memory card.
Is that just backup for settings?

If the firmware and options are stored there, is there a way to back it up so that when you replace this battery you can recover the data?

I ...

Hi JRV,

I sent PM a while back. You can look back through my posts and discern my email address if that does not work.

Thanks again.

Sam

Well I have confirmed that the Video card is bad. Here is how I did it. I did not have access to any EGA monitors and I built up a kludge with a resistor summing network and ran the signal into an old Commodore 1702 monitor that I had forgotten that I had.

I had to pop the 1702 open and tweak the ...

Hello Wowbagger,

Well I just got the service aka "Maintenance" manual that I paid 75.00 for in the mail. Block diagrams, no detail, not even a PCB stuffing list, a lot less than I expected from wprking on other service monitors for friends.

So I am almost back to square one. I did not see any ...

Well, that looks like the video card is going south more than it looks like the monitor is going south. I agree that the best check is to hook up to the video output with an external monitor, but the spacing of the lines, the way the background sort-of repeats in them, etc, makes me think the video ...

Thanks for that. Sometimes the simple things confuse me!

Hopefully someone has seen this issue. I just got the operators manual from the guy I bought it from. I sure hope I can get this unit working, It appears to be able to do anything that I want to do.

Thanks again for the help!

Sam
W3OHM

See if this works please.

http://postimg.org/image/3z8u3z6q5/

sam

Wonderful. Do you have some one that can get the picture from the PogoPlug link and get it to you? I have asked the moderator for posting permission but thus far I have heard nothing. I have never been on a board that is so difficult to use. Alternately you could email me at sam dot reaves at gmail ...

Just for the record if anyone needs or wants to replace one of the Dallas DS1287's or any other of this series I do have a way to read the data (assuming that it is good) and write it to a new DS1287 but the part does have to be removed from the target board and must have all of the pins intact. I ...

It seems that I can not figure out how to post a picture here but I set up a link to a folder on my PogoPlug device that you can just go to and view or download the photo.

I also set the privileges on the folder so you have upload rights there if you have anything useful for me. There is 400GB of ...

I was thinking earlier that perhaps the previous owner did not check the supplies. I did reseat all of the cards. Perhaps I will pull the monitor and see if my ESR meter turns up anything and then look at the supplies. I did find a service manual and have ordered it. Perhaps I will have that in a ...

TO pull the covers: undo the thumbscrews on the back, pull the back a bit, then the top and bottom covers will come off.

Before doing that: what do you mean "wide lines"? Do you mean the scan lines are widely separated? it may be the monitor has gone bad. It's a shame: I've just cleaned out my ...

I acquired a FM/AM 1600S at a hamfest today. It has an issue with a scrambled display. The screen seems to display text but there are wide lines in it. I have not had the chance to connect a display to the rear 9 pin connector as I do not have a 9 pin monitor or a 9 pin to 15 pin adapter.

Also how ...