Author Topic: HP33120A option 001 phase lock on a pair of FGs  (Read 189 times)

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Offline time27

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  • Country: au
HP33120A option 001 phase lock on a pair of FGs
« on: January 27, 2021, 04:28:55 am »
Hi;
I have 2 HP33120A with option 001.
I tried to obtain Phase lock as described in "To Phase lock using a trigger burst mode".
Unable to get a stable Phase lock - signal Phase drifts so much so that is one provides a oscilloscope plot of ch1 v ch2 the figure produced drifts from a Pi/4 line to a full circle - if same frequency is set on both FN generators.

Do I have a faulty opt 001 board?
normal operation of 33120A is ok ( frequency set on each unit - oscilloscope shows good signal shape )

//Nick
« Last Edit: January 27, 2021, 10:29:06 pm by time27 »
 


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