Hi Peter,
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The input modules used in the 54300A are also used in the HP 54100A/D scopes. ? You can find the service manual for the scope here:
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? https://www.keysight.com/us/en/product/54100A/1-ghz-digitizing-oscilloscope.html#resources
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The scope service manual includes sections on the input modules. ?There isn't schematics of the scope or 54003A module, but there is detailed information on calibration and adjustments of all the input modules including the 54003A. ?Also included is the pinout on the back connector in section 7C (pinout on page 7C-26). ?From left to right looking at the back, the pins are +10V, ID0, Overload, coaxial output, ID1, ID2, and -10V.
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If this isn't enough, the full service manual including schematics for the 54100A/D scope is available here for $25.50:
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? http://artekmanuals.com/manuals/hp-manuals/
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This would provide additional detail on the circuitry that supports the input modules, and who knows, maybe schematics of the modules too since they were included in the above service manual from Keysight.? Or maybe Peter Brown's fiche will show what you need.
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-mark
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On Fri, Feb 21, 2025 at 09:32 AM, Peter Gottlieb wrote:
I am specifically looking to use the 54003A input modules standalone so am looking for the pinout.
There are 6 pins plus a 50 ohm coaxial output.? As there is a LM308 in there next to the hybrid I could identify the +V and -V pins, know two are NC and one a ground, so just wonder:
1)? What is the other pin
2)? What are the + and - voltages? (12? 15? or what?)
That's about it.
Peter
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On 2/21/2025 9:14 AM, Peter Brown via groups.io wrote:
I think that I have it on fiche
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Probe multiplexer Op Svc October 1985 rev 1
Paper part number 54300-90901
Fiche part number 54300-90801
Serial PFX 2510A
2 fiches, includes block diagrams and schematics
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Any particular part of it?
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Peter
