| Products > Test Equipment |
| HP 8640B - OPT 323 Service Manual |
| (1/2) > >> |
| SuperMario:
Hi, I am looking for the service manual for HP 8640B - OPT 323. This is a military version of HP8640B. The problem is in the frequency counter circuit, it displays 60% of set value. RF output is at correct frequency. I have manual for the 8640B but counter part is different. If anyone can help with this issue please let me know. Thanks. |
| sbrom:
--- Quote from: SuperMario on November 16, 2022, 03:04:27 am ---Hi, I am looking for the service manual for HP 8640B - OPT 323. This is a military version of HP8640B. The problem is in the frequency counter circuit, it displays 60% of set value. RF output is at correct frequency. I have manual for the 8640B but counter part is different. If anyone can help with this issue please let me know. Thanks. --- End quote --- Don’t know if this is real, but here’s a manual listed for sale, $65. I’ve not seen a free pdf with the option 323. https://fairradio.com/?s=Usm-323 |
| alm:
It might be worth emailing Dave at Artek Manuals to see if any of the 7 different scans he sells cover option 323. Not free, but not $65 either. The 8640B-AN/USM-323 manual sounds like it might be the right one. |
| joeqsmith:
https://antiqueradios.com/forums/viewtopic.php?f=8&t=252760 |
| SuperMario:
Ordered one from ArtekManuals for $12.50. Still waiting for download link. Thanks for the suggestion. |
| Navigation |
| Message Index |
| Next page |