Maximum Power Out Check - Keysight Technologies X Series Service Manual

Troubleshooting

Maximum Power Out Check

Maximum Power Out Check
Perform the following procedure to verify that the instrument is capable of
providing the maximum power output level required:
1. Return the instrument to a known state by pressing Preset.
2. Turn the ALC loop Off by pressing AMPTD and set ALC to Off.
3. Set the Power Search feature to manual by pressing Power Search, Power
4. Turn the RF On by pressing RF On/Off so that the LED below it comes on.
5. Connect the RF output to a spectrum analyzer with the following settings:
6. Tune the signal generator to a frequency that the unlevel condition is
7. Set the amplitude of the signal generator to its maximum settable value
8. Tune the spectrum analyzer center frequency to the frequency of the
9. Verify that the power level measured on the spectrum analyzer meets the
Table 6-4 N5166B, N5171B, N5172B Maximum Power Level
Frequency Range
9 kHz to 10 MHz
> 10 MHz to 3 GHz
>3 GHz to 6 GHz
Table 6-5 N5181B, N5182B Maximum Power Level
Frequency Range
9 kHz to 10 MHz
> 10 MHz to 3 GHz
>3 GHz to 5 GHz
146
Search, Manual.
— Reference level +20 dBm
— Input attenuation to 30 dB
— Span 10 MHz
occurring.
by pressing AMPTD, 30 dBm. If the instrument does not have the High
Power Output option (1EA) an error stating "value clipped to upper limit"
will be displayed and the level will be set to its maximum settable value.
The error can be ignored.
signal generator.
maximum power level specified (+/- 3 dB) in
for the instrument being tested.
Keysight CXG, EXG, and MXG X-Series Signal Generators Service Guide
Table 6-4
Standard Option 1EA
+13 dBm +17 dBm
+18 dBm +21 dBm
+16 dBm +18 dBm
Standard Option 1EA
+13 dBm +17 dBm
+18 dBm +24 dBm
+16 dBm +19 dBm
through Table 6-7