Hi Mark

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From the results given it could be that as stated earlier it requires realigning

The master yig is multiplied several times to give the full band?

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so during alignment the switching between the bands requires setting so they do not overlap or leave gaps

and it is this measurement you require to monitor the sweep with a scalar analyser ?

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but in my early days I used a diode detector into a scope with the sweeper supplying the X axes

this is best dun with an attenuate and not levelled as the bands stand out easier

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during the alignment you might have to change resisters? this will require the use of a decade resistor box

sorry its been over 25 years since I did one

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Paul

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Unit just arrived. Initial testing does not agree with original complaint: "Output at 2Ghz is -10db below what it should be. Won't produce a signal much past 10Ghz and at 10Ghz it is -30db below the RF output level setting. No output past this frequency"

Output is approximately 5 dB below stated level, from 2 to 20 GHz. At the AUX output, I measure also 5 dB low, or -5 dBm, rather than 0 dBm.

With the ALC disabled, output is around 18 dBm, which might also be low (not sure).

So it seems I'm about 5 dB low across the board. Maybe YIG output is weak OR perhaps the MOD/Coupler...?

At any rate, may not be as bad as expected.

Next, open 'er up!

Mark

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