Author Topic: 53131A option -003 prescaler chip ID?  (Read 639 times)

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Offline Jwalling

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53131A option -003 prescaler chip ID?
« on: June 21, 2017, 04:02:23 pm »
Rather than source a knock-off -003 prescaler board for my 53131A, I've decided to repair it if possible.
The counter becomes unstable @3GHz when a signal less than about -15dBm is measured. I've replaced all 4 amps with no change in the symptoms. The output of this prescaler is / 128. I can see that it's output is jittery, and I think (hope) it's the defective part, however, I can't ID the markings on the chip.

Anyone?
Jay

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Offline branadic

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Re: 53131A option -003 prescaler chip ID?
« Reply #1 on: June 21, 2017, 04:29:48 pm »
Could it be an MB510 2.7GHz TWO MODULUS PRESCALER made by Fujitsu?
Fluke 8050A | Prema 5000 | Prema 5017 SC | Advantest R6581D | GenRad 1434-G | Datron 4000A | Tek 2465A | VNWA2.x with TCXO upgrade and access to: Keysight 3458A, Keithley 2002, Prema 5017 SC, 34401A, 34410A, Keithley 2182A, HDO6054, Keysight 53230A and other goodies at work
 
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Offline Jwalling

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Re: 53131A option -003 prescaler chip ID?
« Reply #2 on: June 21, 2017, 04:32:40 pm »
Could it be an MB510 2.7GHz TWO MODULUS PRESCALER made by Fujitsu?

That could be it! that led me to https://groups.yahoo.com/neo/groups/hp_agilent_equipment/conversations/messages/73334

Many thanks!
Jay

System error. Strike any user to continue.
 


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