Giga-tronics 2500B Series Microwave Signal Generators
Performance Verification
Operation Manual, Part Number 34737, Rev C, June 30, 2011
Page 111
Table 69: Step Attenuator Level Accuracy
Step Attenuator Level Accuracy
Step
Action
1.
Connect the equipment as shown in Figure 51 on page 110.
2.
Allow the equipment to warm up for at least 30 minutes.
3.
Set the spectrum analyzer to the following settings:
Frequency: Lowest output frequency your model 2500B is capable of
Reference Level: 0 dBm
Span: 5 kHz
Sweep Time: AUTO
Resolution Bandwidth: 30 Hz
Video Bandwidth: 30 Hz
4.
Set the 2500B output power level to -0 dBm.
5.
Set the 2500B output to the lowest frequency your model of 2500B is capable of, and press
.
6.
Press the Peak Search button on the spectrum analyzer.
7.
Press the Step Size button on the 2500B and set the step size to 10 dB.
8.
Reduce the RF output level of the 2500B in 10 dB increments by pressing
while observing
the measurement on the spectrum analyzer.
9.
Record each level measured by the spectrum analyzer into the appropriate column of the
datasheet for the frequency being tested.
10.
Repeat steps 4 through 10 for the remaining test frequencies in the datasheet, recording the
measured levels in the appropriate columns of the datasheet.
11.
After you have entered the test results onto the datasheet, compare the results with the
following to verify compliance of the 2500B:
End of Procedure
RF ON
