AnsweredAssumed Answered

HP 54601A error message "illegal operation HO"

Question asked by vics3suns on Sep 15, 2008
Latest reply on Dec 1, 2008 by dmexicot

Like • Show 0 Likes0
Comment • 2

I know finding any support/service manuals on this scope is nearly impossible, but has anyone seen this error? I only have the operators/user manuals. The scope powers up, but apparently fails the self test and gives this error. Any suggestions?

Vic

No one else has this question

Outcomes

2 Replies

ko2054 Sep 19, 2008 12:14 PM
Mark Correct
Correct Answer
Hello Vic, the 54600A and 54601A scopes use a motorola 68000 processor. The Illegal operation is a 68000 interrupt message. I do not know what the HO stands for. You could research the 68000 errors on the internet and you might be able to determine what the HO means. However, the message indicates that there is a problem with the CPU or surrounding hardware. The problem could be the ROMs or the CPU. The self tests run a ROM checksum which should catch a ROM failure, but it is possible that the Illegal operation interrupt is happening before the ROM checksum routine is executed. Send an email to support_col@agilent.com and address it to me. If you include your address, I can send you a set of ROMs. I am pretty sure I have some of those ROMs in my storage area. You can try the ROMs and see if that fixes your problem. If the ROMs do not help, you could replace the CPU. That might fix your problem. I do not have any spare CPUs, but you could do an internet search and you might still find the part available. The Motorola part number should be stamped on top of the part. The only other suggestion is for you to find a working 546XXA/B scope on the internet. You might find an affordable after market scope on the internet.
Like • Show 0 Likes0
Actions
dmexicot Dec 1, 2008 9:59 AM
Mark Correct
Correct Answer
Vic,

I am seeing the same error on my unit. Did you get an answer to this?

Thx
Like • Show 0 Likes0
Actions

HP 54601A error message "illegal operation HO"

Outcomes

Related Content

Recommended Content