Keysight CXG, EXG, and MXG X-Series Signal Generators Service Guide 430
Functional Tests
Relative Frequency Range and Accuracy Check
Relative Frequency Range and Accuracy Check
The frequency range is tested by determining the frequency accuracy relative
to the timebase at the frequency limits of the signal generator. This test can be
performed with a frequency counter that meets the frequency accuracy limits
in Table 17-1.
Frequency Counter Procedure
Test Setup 1. Connect the equipment as shown.
2. Preset the signal generator: Press Preset.
3. Turn modulation off: Press the Mod On/Off so that the MOD On/Off LED
turns off.
4. Set the amplitude:
Press Amplitude and enter 0 dBm.
5. Turn RF on: Press RF On/Off so that the RF On/Off LED lights.
6. Verify that the frequency counter is locked to the 10 MHz external
reference frequency (±1 Hz).
7. For maximum accuracy, set the gate time on the frequency counter to >5
seconds.
(For example, press Gate & ExtArm twice and use the arrow keys to set the
value.)
8. Set the frequency: Press Frequency and set the signal generator to the
first frequency listed in Table 17-1.
9. Confirm that the measured frequency is within the limits listed.
Test Equipment Recommended Model
Frequency Counter Keysight 53131A/32A Universal Counter
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