Hi Gordon,
Since you managed to stop the spikes from moving with LINE TRIGGER, I would say that you have a power supply filtering problem. I don't remember the inside of the 3585 any more, but I suspect that you could easily use a scope to check all the power supplies for ripple. That would be the first thing I would do and you may not need the extenders for that.
Vladan
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--- In hp_agilent_equipment@..., "gldinnc" wrote:
By the way, I have scanned the power supply trouble shooting section and it seems like most of the likely steps call for the use of extender boards. Is it realistic to attempt repair without extender boards?
Gordon, KA2NLM
--- In hp_agilent_equipment@..., "gldinnc" wrote:
In response to the replies to date:
1. The spikes stop moving if I trigger off the line.
2. The number of spikes is not depended on frequency; therefore the frequency between spikes varies.
3. The 3585a worked fine until recently. No wiring changes have been made. Two different runs back to the breaker box have been used with the same result.
More suggestions please,
Gordon, KA2NLM
