Giga-tronics 2500B Series Microwave Signal Generators
Performance Verification
Operation Manual, Part Number 34737, Rev C, June 30, 2011
Page 117
Amplitude Modulation Bandwidth
Step
Action
8.
Vary the rate of the function generator within the specified rate range for the AM specification (see
Table 51 on page 95). Identify the lowest sideband amplitude. Record the value in the second column
of the datasheet. Re-adjust the spectrum analyzer span as needed at each test frequency.
9.
Subtract the reading in column 2 from the reading in column 1 and record the value in column 3. The
difference between the two readings should be 3 dB or less.
10.
Repeat steps 6 through 9 for the remaining test frequencies in Datasheet 7.
11.
After you have entered all of the test results onto the datasheet, compare the test results with the
following to verify compliance of the 2500B:
End of Procedure
NOTE:
In the datasheet below, test the 2500B only at the frequencies within the range of your specific model of 2500B.
For frequencies not within your instrument’s range, enter “N/A” in the test results column(s) of the datasheet.
Table 74: Datasheet 7: Amplitude Modulation Bandwidth
Datasheet 7: Amplitude Modulation Bandwidth
Test
Frequency
Results
Carrier Amplitude
Sideband Amplitude
Δ
(specification < 3 dB)
10 MHz
1
100 MHz
1
200 MHz
1
400 MHz
1
750 MHz
1
1.5 GHz
1
3 GHz
6 GHz
10 GHz
12 GHz
26 GHz
36 GHz
40 GHz
Model type of 2500B series (for example, 2540B):
Serial number:
Tested by:
Date:
1
The 2500B models with Option 18 are adjustable down to 100 kHz; 10 MHz with Option 27.
