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Products => Test Equipment => Topic started by: time27 on January 27, 2021, 04:28:55 am

Title: HP33120A option 001 phase lock on a pair of FGs
Post by: time27 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