The front of the panel has three indicator LEDs, a BNC output connector and a manual frequency adjustment.
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Regarding the ET prefix:
Anything that starts with ET was primarily meant for factory use. Very few "ET" products were sold to the outside. I think ET stood for Electronic Tool or something like that. Typically, an item like this was custom made for a specific production line.
| Case |
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The unit is in a cabinet similiar to an HP 59309A digital clock,
with top, bottom and side panels of HP part numbers 5040-7210,
5040-7211 and 5040-7212, respectively.
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| Front |
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The front of the panel has three indicator LEDs, a BNC output connector and a manual frequency adjustment. |
| Back |
The back has a fused AC power connector and three BNC connectors for +24 Volts DC, output and EFC. |
| Top |
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| Top Front |
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| Oscillator Interface |
This is the oscillator interface, identified as such by the hand-written descriptor. It appears to be HP part number 1251-2035, a PC edge connector, 2 rows with 15-contacts per row, manufacturer code 71785 (TRW Elek Components Cinch Division, Elk Grove Village, IL 60007), manufacturer part number 252-15-30-300.
The 10811A Oscillator requires a 0.156" C-C 15-pin printed circuit connector. The recommended connector is the CINCH
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I am looking for documentation, the original oscillator and the associated interface board for this device.
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Last revised July 8, 2016
