Anritsu Spectrum Master MS2711D Maintenance Manual page 33

Measurement Accuracy Verification
The test in this section verifies the combined level accuracy of the FCN4760 Frequency Converter and
Spectrum Master.
Level Accuracy with Frequency Test
g. Equipment Required:
· Anritsu MG3692A Synthesized Signal Source, with options 2A, 4 and 15A
· Anritsu ML2430A-Series Power Meter or equivalent
· Anritsu MA2442A High Accuracy Power Sensor or equivalent (2)
· Anritsu 34NN50A 50 ohm adapter or equivalent
· Anritsu 34RSN50 50 ohm adapter or equivalent
· Anritsu 34RKNF50 50 ohm adapter or equivalent
· Anritsu 15NNF50-1.5C RF Coaxial Cable or equivalent
· Weinschel 1-30 30 dB Fixed Attenuator
· Weinschel 1506A Power Splitter or equivalent
h. Procedure:
1. Turn on the power meter and signal source.
NOTE: Before continuing, allow a 30-minute warm up for the internal circuitry to stabilize.
2. On the power meter, press the
display Channel 2 setup menu. Press the
Press the
Sensor
3. Connect the power sensors to the power meter and calibrate the sensors.
4. Set the MG3692A output power level to 5 dBm.
5. Set the MG3692A output to 4750 MHz CW.
6. On the power meter, press the
the keypad to enter 4750 MHz as the input signal frequency, which sets the power meter to the
proper power sensor cal factor. Press the
reading.
7. Connect Sensor A to the MG3692A output, measure the output power level and record the value
in column A of Table 14.
Table 14. Output Power Level
A
Sensor A Reading
Freq (MHz)
@ Source Output
4750
5153
5284.9
5800
8. Disconnect Sensor A from the MG3692A output.
9. Connect the power splitter to the MG3692A output and Sensor B to one of the power splitter out-
puts. Install the 30 dB Fixed Attenuator to the other power splitter output and then connect Sen-
sor A to the end of the Attenuator. Refer to Figure 1.
10. Record the new sensor A reading in column B of Table 14.
Spectrum Master MM
key, the
Channel
INPUT
key to display both Sensor A and Sensor B Readings.
key, the
Sensor
SENSOR
B
Sensor A Reading Splitter/Attenuator
@ end of Attenuator
soft key and then the
Setup
key twice to set the Input Configuration to B.
soft key, and then the
Cal Factor
key on the power meter to display the power
C
Sensor B Reading
@ Power Splitter
Combined Loss
Output
soft key to
CHANNEL
soft key. Use
FREQ
D E
Sensor B Path
Power Splitter Loss
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