Keysight CXG, EXG, and MXG X-Series Signal Generators Service Guide 257
Baseband Generators
A2 Vector BBG Assembly Troubleshooting
4. Setup the function generator with the following settings:
— Function = Square wave
— Frequency = 1 Hz
— Amplitude = 1 VP-P
— Offset = +0.5 V
5. Tune the instrument to 1 GHz by pressing FREQ, 1 GHz.
6. Turn both the output power and modulation on by pressing RF On/Off and
Mod On/Off so that the LEDs below them come on.
7. Set the power level to -10 dBm by pressing AMPTD, -10 dBm.
8. On the source press Mode, Dual ARB, Select Waveform.
9. Highlight RAMP_TEST_WFM and press Select Waveform.
10.Set the trigger type by pressing Trigger Type, Gated, Active High.
11.Set the trigger source by pressing Trigger Source, Trigger Source, EXT.
12.Turn the Arb on by pressing Mode, Dual ARB, Arb On.
13.At this point the ARMED indicator should be displayed on the screen and
the spectrum analyzer should be displaying a CW signal at the center of
the screen at -10 dBm.
14.Select the PATT TRIG input by pressing Trigger Source, Ext Source, Patt
Trig 1 BNC Source, Patt Trig.
15.Connect the function generator output to the PAT TRIG connector.
16.The signal on the spectrum analyzer should now be alternating between
the CW signal and the playing of the waveform file shown in Figure 12-9 at
a rate equal to the frequency of the function generator.
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