Section 2 MS2665C
2-30
(9) Measure the 6769B power output with “6769B output calibration” program.
1) Connect the 6769B RF OUTPUT to the MA4601A (for MS2665C) or MA2444A (for MS2667/68C) through a
signal feeder. The signal feeder consists of a coaxial cable (e.g. SUCOFLEX) less than 1 m length and two 3 dB
attenuators attached to each end of the cable. Note : Use a torque wrench for tightening each connection.
2) Run the “6769B output calibration” program by pushing the button on the PC display.
3) Change the power sensor for the MA4705A according to PC message. (for MS2665C only)
4) Before going to next step, leave the 6769B at least for 5 minutes after the program stopping.
Note that 1) The connections of the 6769B and the signal feeder must not be disconnected after the measurement
in order to keep the measured data valid, 2) this measurement is needed once a day, as long as the 6769B is power
on.
(10) Connect the end of the signal feeder to the spectrum analyzer RF Input.
(11) Run “Frequency Response Measurement” program with the button on the PC display.
(12) Write frequency response compensation data into the spectrum analyzer’s memory with the button on the PC display.
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