Products > Test Equipment
Re: HP 4957A Protocol Analyzer - Option 001 High Speed Data Capture?
free_electron:
That thing is such a frankenweenie... two Z80 processors , an 68000 processor, a 80188 procesor and a 8051 ( the intel plcc with hp part number engraved is a mask 8051).
you have to be stark raving mad to develop firmware for that..
gslick:
Is the pin 1 dimple and beveled corner on one of the 04957-19062 parts towards the CRT when they should be away from the CRT?
Hard to tell from the photo about the other 04957-19062 part. The pin 1 dimple and beveled corner should be on the right. Don't see the dimple, and can't tell which corner is beveled.
NickyDoes:
Thought I was at the age to need glasses - or not. Now I know I need the glasses.
After inserting the chips correctly, the device boots normally. Humbling.
I'll do more work with the device tomorrow, but a quick look shows nothing different for the speeds.
NickyDoes:
Success!
Option 001 High Speed Data Capture is now installed and runs. The 4957A really is an odd mashup. You must run the ROM application HS_Capture to get the higher speeds.
Note: High speed capture does not work on the RS-232 interface.
petermesstorff:
Hello ndemarco,
I also picked up a HP 4957A Protocol Analyzer and would like to upgrade from A0001 to A0002 version.
I would like to know which type of EPROMS you used and what programmer you can recommend (TL866-II)?
Peter
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