More information -
From
http://ko4bb.com/Manuals/HP_Agilent/HP_-_8660_Synthesized_Signal_Generator/HP_86602B_MIL_Maintenance_Manua.pdf
Page 4-45:
DESCRIPTION:
The phase modulated output of the System Under Test is demodulated using a
phase modulation test set. The harmonic levels are measured with a spectrum
analyzer and the total harmonic distortion is calculated. A low pass filter
is used between test oscillator and modulation section to insure that the
modulation drive signal has less than 0.3% distortion.
John, K1AE
----- Original Message -----
From: "Mark Kahrs" <[email protected]>
To: "Discussion of precise time and frequency measurement"
<[email protected]>
Sent: Sunday, September 20, 2009 12:26 PM
Subject: [time-nuts] HP 8660C-K10 phase modulation test set
Among my mistaken acquisitions over the past is a phase modulation
test set for the 8660C (model 8660C-K10).
I've put two pictures here:
http://www.caip.rutgers.edu/~kahrs/ebay/8660C-K.1.JPG
http://www.caip.rutgers.edu/~kahrs/ebay/8660C-K.2.JPG
This looks like a type of phase noise test set: there is a LO in a
sealed box in one corner. There are mixers and detectors and a
divider board.
I thought I would see if there was any interest from time-nuts before
I put it on the usual auction site.
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