Series 8650A Universal Power Meters - Giga-tronics

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Series 8650A Universal Power Meters1. Turn on the calibrator by entering "L" or by manually turning on the calibrator through the frontpanel Meter Setup Menu.2. Set the frequency to 50 MHz by using the “X” command or by manually setting the frequency of thecalibrator to 50 MHz. (It is necessary to do this only if Option 12 is installed).3. Type “D”. The 8650A will request a DAC value. Type “65000” and press the ENTER key. Themaximum value is 65535. Type “L” after entering the DAC value to load the new DAC setting.4. Measure the output power. If the reading is not greater than or equal to the specification forMaximum Output Power, repeat step 3 and increase the DAC value in increments of 50 until themaximum DAC value has been reached. Record the calibrator maximum output power reading inthe Performance Verification Test Data Sheet.5. If Option 12 is installed, repeat steps 2 through 4 with the Calibrator set to 1000 MHz.6. Refer to the Calibrator Troubleshooting section of the manual if the Calibrator does not meet theMaximum Output Power Specification.2.3.2.3 Calibrator Attenuator TestUsing the same test setup in Figure 2-2. Set the Step Attenuator so that the Attenuator is at 0 dBattenuation. Press the REL softkey and set the 8650A to make a relative measurement. Using theHyperTerminal Comm program, type “A” and press enter. Next, enter “0”. Use the attenuator settingsspecified in the Calibrator Attenuator Test section of the Performance Verification Test Data Sheet.Record the relative measurement of the 8650A power meter in the appropriate column and compare tothe specifications.2.3.2.4 Return LossConnect the test setup as shown in Figure 2-4. Set the RF Source frequency to 50 MHz and level to 10dBm. Calibrate the 80501A Directional Bridge to the 8650A Universal Power Meter according tomanufacturer’s specifications.1. Connect the Short supplied with the Directional Bridge and set the meter into relative mode(0 dB).2. Disconnect the Short and connect the 80501A Directional Bridge to the Calibrator. Turn theCalibrator off when performing this measurement.3. Measure and record the absolute value of the reading in the appropriate section of thePerformance Verification Test Data Sheet provided at the end of this chapter.4. If Option 12 is installed, repeat steps 2 through 3 with the RF source set to 1000 MHz.2-8 Manual 32089, Rev. A, December 2000
Adjustments & Performance TestsRefer to the Calibrator Troubleshooting section of the manual if the Calibrator does not meet theReturn Loss specification.Figure 2-4: Return Loss Setup2.3.2.5 Calibrator Frequency CheckConnect the output of the 8650A calibrator to the frequency counter. Set the output of the calibrator to50 MHz, +5 dBm and turn on the calibrator. Record the reading of the frequency counter in thePerformance Verification Test Data Sheet. If Option 12 is installed, repeat this test for 1000 MHz.Manual 32089, Rev. A, December 2000 2-9a
Page 2 and 3: All technical data and specificatio
Page 4 and 5: Preparation for ReshipmentFollow th
Page 6 and 7: Series 8650A Universal Power Meters
Page 33 and 34: Adjustments & Performance Tests2.3.
Page 35 and 36: Adjustments & Performance Tests2.4
Page 37 and 38: Adjustments & Performance Tests2.5.
Page 39 and 40: 3Theory of Operation13.1 8650A Powe
Page 41 and 42: Theory of Operation3.1.4 Calibrator
Page 43 and 44: 4Replaceable Parts4.1 8650A Replace
Page 45 and 46: 5Troubleshooting5.1 8650A Fault Iso
Page 47 and 48: TroubleshootingSensor will notcalib
Page 49 and 50: TroubleshootingCrest factor errorsN
Page 51 and 52: TroubleshootingNotes:1. The instrum
Page 53 and 54: Troubleshooting5.2.3 Calibrator1. U
Page 55: IndexSeries 8650A Universal Power M

Series 8650A Universal Power Meters - Giga-tronics

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