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Wavetek 1175 Benchmark scalar network analyzer

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Hi guys,
I've obtained bare Wavetek 1175 Benchmark scalar analyzer without any  probe and manual.
The problem was in power supply, now is ok, and problems persist without probes ( for  Ch A and Ch B) and manual.
Wavetek description for probe is: Power sensor  with dual balanced, zero bias, low barrier schottky diodes. 
I cannot find original probes, but I will make probe, I have some experience with GHz milivoltmeter probes  (HP3406A , TF2603 Marconi).
System have message : Absent probe,  and  probes  is detected with 3 pins of microcontroller 87c196 on AD board.
I need service manual or the schematic diagram for original Wavetek probe.
Any help and advice is welcome.

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