HP 8753E User Manual page 108

14. To set the CW frequency before going into the power sweep mode, press:
16. Enter the start and stop power levels for the sweep.
Now channel 1 is displaying a gain compression curve. (Do not pay attention to channel 2
at this time.)
17. 'lb maintain the calibration for the CW frequency, press:
18. Rress cmJ (j-1 ~~~~:~~~~~.~~~ :~~~:..~~~~,~~~;
Now channel 2 displays absolute output power (in dDm) as a function of power input.
22. Press @iii) @ Ixl) to change the scale of channel 1 to 1 dB per division.
Note A receiver calibration will improve the accuracy of this measurement. Refer to
Chapter 5, "Optimizmg Measurement Results."
23. press cm) ~~~~~~~~~~ '~~~~~~~~.
24. lb hnd the 1 dB compression point on channel 1, press:
. . . . : : : : : : ; . ; (_ . : : : . . . : < <: : . . '" " ' : , : , . , . , . , . , . , . . , . , . , . , . , . , . , . , . , . , . _ _
Notice that the marker on channel 2 tracked the marker on channel 1.
26. lb take the channel 2 marker out of the A mode so that it reads the absolute output power
of the amplifier (in dBm), press:
(Marker_) .~~~~~~ ~~~~~~~~~~'
. .
change the scale of channel 2 to 10 dR per division.
. . .
Making Measurements 2-57