Agilent Technologies HP 83711A, User Manual

Page: 58 / 251

Generating Signals with the Synthesizer
T o Use External P ower Meter Leveling
4. Set the desired output power level using the 4
POWER LEVEL
5 key .
5. If the RF output is currently turned o, press the 4
RF ON/OFF
5 key to
turn it on.
If the RF output is o, the word OFF appears in the power level portion
of the display .
6. Select auto range on the power meter .
7. Modify the synthesizer output power so that the power meter display
indicates the power desired at the sampling point.
F or example , assume that you are using a directional coupler that has
a coupling factor of 22 dB and you want +5 dBm at the output of the
coupler . In this case , you must set the power at the sampling point (the
coupled output) to 017 dBm. P erform the following procedure to set the
power at the sampling point to 017 dBm.
a. Press the 4
POWER LEVEL
5 key .
b. Rotate the knob on the synthesizer until the power level displayed on
the power meter is 017 dBm. Disregard the power level shown on the
synthesizer display .
8. Select range hold on the power meter .
9. Press the 4 EXT METER 5 key on the synthesizer .
When the 4 EXT METER 5 key is pressed, the text RNG-HOLD,POWER
XXXdBm appears in the display , where XXX is the last range hold meter
value that was entered.
10. Enter the power shown on the power meter display into the
synthesizer using the numeric keypad.
The value entered into the synthesizer is called the range hold meter
value . F or example , if the power meter currently reads 017 dBm,
perform the following procedure to enter 017 dBm into the synthesizer:
a. Type 4
017
5 on the synthesizer numeric keypad.
b. T erminate the range hold meter value entry by pressing the 4
GHz
5
(dBm) key .
3-12