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You need to test the signal generator output at 1MHz (or less) to be sure of attenuator type. For? a 8920A the Firmware is in ROMs. I don't know of an image available. The memory card slot in the

Isn't this card imaged on files area? https://www.tabalabs.com.br https://tabajara-labs.blogspot.com

Hi George I was hoping to get one that covers the whole of the HF spectrum :-) I'd like to update its firmware (only if doesn't cause any other problems). I also have RF tools on a card for a 8920B,

Hi Danny The serial number says that it was manufactured between 1998 and 1999 is Scotland, so you should be lucky and have the electo-mechanical input assembly and it will go down to 400KHz 73 George

Hello George The sticker on the rear has serial No 3427Uxxxxx and the start screen has the manufacture date as 1990-94. Attached screen shot for the installed options, got at by using your

Hello Robert Now all I have to do is figure a way of using the RF Tools on the PCMCIA card I recently bought on a 8920A rather than the 8920B I was hoping to get. The sticker on the rear has serial No

And it became a blog post =) https://tabajara-labs.blogspot.com/2021/01/como-ligar-um-monitor-vga-no-hp-e8285a.html https://www.tabalabs.com.br https://tabajara-labs.blogspot.com

Hi Danny, You got that one for a good price. Our friends across the pond pay a lot more than $1025 :-) You should run the IODIAG2 test from the ROM tests list if it is present in your test set's

Glad you got it going.

Hi Daniel I should also say that the ONLY way that you can be absolutely certain of the frequency range of a HP8920A or a HP8920B is to measure it, so many changes to then have been made by past

Oh, it worked! It was a problem with the LM1881 supply. Thanks a lot, Ralph! ---8<---Corte aqui---8<--- http://www.tabajara-labs.blogspot.com http://www.tabalabs.com.br ---8<---Corte aqui---8<---

The SA and signalling option are the only ones I consider required. The high stability means longer warm up time to come on frequency and with the cheap availability of GPS locked references not sure

Hi Danny Do you know the first five characters of the serial number, Generally 8920A's manufactured before 1999/2000 have an electro-mechanical input assembly (attenuator) and will work down to

Hello George Thank you, you've saved me from heaps of digging through pdf's I think the instructions are fairly straight forward, so no need to dig out your 8920A. I'll just cut and paste them into an

Try this To check your installed options: 1) Press the “TESTS” button, 2) Select “ROM” under procedure location 3) Select LIST_OPTS under procedure 4) Select RUN 5) The HP8920A will now list

Here is what I did. ?While it does not have anything to do with it working, I used one of the DC to DC ?converters that takes any reasonable voltage and will lower it to a value set by a pot on the

Hello HP8920 hive mind :-) I am asking a seller to get me a photo of the installed options/firmware screen of an 8920A i have just bought. He has given me the options from the rear label, but the

Tried the GBS 8200 V4.0, CDMA service monitor E8285A. My results: - Composite video into the Y input...No signal - Composite video thru a LM1881 sync separator, video as G, HSync as Sync...No signal -

I'm waiting for my GBS card to arrive and test it. By the photos you need a sync separator, so I connected a LM1881 chip to extract h-sync and v-sync, and I'll test it on RGB input (as a MDA signal,

Hi, I see some very interesting photos? of the HP8924C with GBS8220 Video Converter. (mostly from wb7dmx and others, transferred from the old Yahoo! group) In some of them it seems the GBS8220 was