Giga-tronics 2508A - Frequency Modulation Tests

Performance Verification
2500A Series Operation Manual, 34172 Revision C, March 2008
4.3.3.2 Frequency Modulation Tests
The following procedures test Frequency Modulation Accuracy and Maximum Deviation at frequencies
within the 4 to 8 GHz band. The procedures identify a Bessel null for each of the test frequencies in both
narrow and wide mode FM.
4.3.3.2.1 Equipment Required
• Function Generator
4.3.3.2.2 Test Setup
Figure 4-6: FM Deviation Bandwidth and Accuracy Setup
4.3.3.2.3 Procedure - Narrow Mode FM Maximum Deviation Test
1. Connect the test equipment and UUT as shown in Figure 4-6.
2. Set the Function Generator to the following settings:
Waveform: Sine wave
Rate: 41.06 kHz
Output: 2 Vp-p into 50Ω
3. Set the Spectrum Analyzer to the following settings:
MICROWAVE SYNTHESIZER (UUT)
RF IN
Spectrum Analyzer
RF OUT
2500A Microwave Synthesizer
OUTPUT
Function Generator
Timebase
IN
OUT