Fcn4760 Frequency Converter Verification - Anritsu Spectrum Master MS2711D Maintenance Manual

23. Press the
Span
24. On the Power Meter, press the
key and enter 50 MHz for the Input Signal Frequency. This sets the power meter to the proper
power sensor cal factor. Press the Sensor key to display the power reading.
25. Set the MG3692A output to 50 MHz CW and adjust the power level so that the power meter dis-
plays the corresponding desired Sensor B Reading for –30 dBm as recorded in Table 12.
26. Verify that the Power Meter reading on the Spectrum Master is within the specifications in Table
13.
NOTE: If the reading is unstable, turn on RMS Averaging by pressing the BW/SWEEP key, then the
RMS Averaging soft key. The number of points to average can be set to low, medium or high.
Table 13. Output Power Level
Freq (MHz)
50
1000
2000
2850
* ±1 dB for units with serial number 405039 and below.
27. Repeat steps 22 and 26 for 1000 MHz, 2000 MHz, and 2850 MHz.

14. FCN4760 Frequency Converter Verification

The tests in this section verify the performance of Model FCN4760 Frequency Converter. The tests in-
clude:
· Phase Noise Verification
· Second Harmonic Distortion Test
· Residual Spurious Response Test
· Measurement Accuracy Verification
Phase Noise Verification
This test verifies the combined phase noise of the FCN4760 Frequency Converter and the Spectrum
Master.
a. Equipment Required:
· Anritsu FCN4760 Frequency Converter
· Anritsu MG3692A Synthesized Signal Source, with options 2A, 4 and 15A, or equivalent
· Anritsu 34RSN50 50 ohm adapter or equivalent
· Anritsu 15NNF50-1.5C RF Coaxial Cable or equivalent
b. Procedure:
1. Connect the output of the FCN4760 to the Spectrum Analyzer RF In port of the Spectrum Mas-
ter.
2. Connect the output of the source to the FCN4760 RF Input with the coaxial cable.
3. Connect the external power supply (Anritsu part number 40-168) to the Spectrum Master.
4. Press and hold the
ter. (This sets the instrument to the factory preset state.)
Spectrum Master MM
soft key and enter , then press the
3
key and then the
Sensor
Measured Value
key and press the
ESCAPE/CLEAR
key to set the span to 3 MHz.
MHz
soft key. Select the FREQ soft
CalFactor
Specification
–30 dBm ± 1.5 dB*
–30 dBm ± 1.5 dB*
–30 dBm ± 1.5 dB*
–30 dBm ± 1.5 dB
key to turn on the Spectrum Mas-
ON/OFF
25