Hi All -- Sorry if this is off-topic, but you all have a lot of
experience with equipment. I just picked up a 6061A and I'm happy to say
it mostly works. But... at frequencies below 250 MHz, as the frequency
output is decreased, the level drops too, and starting from +12dBm
(rated out, more-or-less), by 20MHz, the positive peak of the sine wave
is flattening -- this progression of level drop and increasing
distortion keeps on until the bottom at 10kHz, where the level is over
4dB low and distortion is fairly significant.
I'm a complete novice to this instrument and to synthesizers in general.
I can use some tips about what circuits or parts might be causing this,
or where to look to start on a fix. I do have a manual with schematics.
I seem to recal reading that there is a Low Band circuit that works at
245MHz and below, so it seems like that may be where to start looking.
Any and all suggestions appreciated.
I welcome off-list comments if that seems most appropriate.
Dick Moore
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