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Motorola R2680

This forum exists for the purposes for discussing service monitors (This includes but is not limited to Motorola, HP, Aeroflex, GD, etc). Additional topics allowed include test procedures, interpretation of test results, where to find information about specific tests, antenna VSWR, return loss testing, duplexer and filter alignment, etc.

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Motorola R2680

Postby dtj » Wed Jul 27, 2016 3:25 am

Signal generator levels are non-linear eg if set to -14dBm on the Hi-Gen output is actually -20.23dBm. Self-Cal does not cure the problem.
Noticed that the F1 key sends the unit to some Factory alignment screen,but without any knowledge on what's happening on this screen is not helpful.
The Processor generates Digital signals via the Interface card to control the Generate Module's levelling. Have swopped the Generator Module,the Interface module,but unit is still faulty.
It has also affected the Spectrum Analyzer level accuracy as it uses CAL signal from the Generator module.
I have a lot of experience with these units,but this one has me stumped.
Any help?

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Re: Motorola R2680

Postby DJP126 » Sun Jul 31, 2016 5:04 pm

I would suspect a problem in the RF I/O.

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Re: Motorola R2680

Postby Bat3516 » Wed Dec 07, 2016 1:10 pm

Call Freedom. They still support the 2600 line. ... cement.pdf

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