All test equipment requires a 30 minute warm-up period to ensure accurate performance.
In the following test setup, cables are designated as solid lines and direct connections are designated as dashed lines.
FM deviation accuracy is checked for CW frequencies from 500 MHz to 1.0 GHz. If the DUT meets the accuracy specification in this frequency range, accuracy in all other frequency ranges will be assured.
A measuring receiver is used to demodulate the FM signal and indicate the recovered FM deviation. The measuring receiver is calibrated prior to the measurement.
|
Instrument |
Critical Specifications for This Test |
Recommended Model |
|
Measuring Receiver |
FM Deviation Accuracy |
8902A |
|
Function Generator |
none |
33120A Opt 001, 33250A |
|
Digital Voltmeter |
AC True-RMS Accuracy |
3458A |
Connections and Setup Procedures
|
|
All test equipment requires a 30 minute warm-up period to ensure accurate performance. In the following test setup, cables are designated as solid lines and direct connections are designated as dashed lines. |
Connect all test equipment as shown.
Connect GPIB cables to all GPIB-controlled test equipment.
While
performing this test, follow all instructions on the controller display.
Measuring Receiver Calibration Setup
FM Deviation Accuracy Test Setup
