Giga-tronics 2508A, Operation Manual

Page: 102 / 132

Chapter 4: Specifications & Performance Verification
102 2500A Series Operation Manual, 34172 Revision C, March 2008
4.3.2.3.3 Procedure - Maximum-Leveled Power Test
1. Connect the Power Meter and Power Sensor to the RF output of the UUT as shown in Figure 4-3.
2. Set the UUT to the first frequency specified in Datasheet 3, and activate the RF output.
3. Increase the output power of the UUT until the Unleveled indicator lights.
4. Reduce the output power setting until the Unleveled indicator turns off.
5. Record the measured maximum leveled output power in Datasheet 3 for the test frequency.
6. Repeat steps 3 through 5 for the remaining frequencies in Datasheet 3 that are within the operating
range of the instrument.
4.3.2.3.4 Procedure - Level Accuracy Test
1. Use the test setup described in the Maximum-Leveled Power Test (Figure 4-3).
2. Set the output level of the UUT to 0 dBm.
3. Set the UUT to the first test frequency listed in Datasheet 4.
4. Record the measured output power in the “Level = 0dBm” column.
5. Repeat Step 4 for the remaining test frequencies shown in Datasheet 4 that are within the operating
range of the instrument.
6. Set the output level of the UUT to +12.5 dBm. For 2540 models, set the output level to +6.5 dBm.
7. Set the UUT to the first test frequency listed in Datasheet 4.
8. Record the measured output power in the “Level = +12.5 dBm. . . . . .” column.
9. Repeat Step 8 for the remaining test frequencies shown in Datasheet 4 that are within the operating
range of the instrument.
NOTE: When measuring the accuracy of the model 2500A, consideration must be given to the mea-
surement uncertainties of the test system. These include, but not limited to, VSWR, Cal Fac-
tor Uncertainty, and Calibration Uncertainty.