Anritsu Spectrum Master MS2711D Maintenance Manual page 17

Level Accuracy with Power Test
c. Equipment Required:
· Anritsu MG3692A Synthesized Signal Source, with options 2A, 4 and 15A
· Anritsu ML2438A Dual Channel Power Meter or equivalent
· Anritsu MA2442A High Accuracy Power Sensor or equivalent (Two each)
· Anritsu N241A50 Power Splitter or equivalent
· 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 1-10 10 dB Fixed Attenuator
· Weinschel 1-30 30 dB Fixed Attenuator
d. Procedure:
1. Use the recorded values for 50 MHz in Table 5, calculate the desired Sensor B Reading for Test
Power Level > –50 dBm at 50 MHz using the following formulas:
Desired Sensor B Reading = Test Power Level + C – E
2. Record the calculated results in Table 5.
Table 5. Level Accuracy with Power Test Setting
Test Power Level (dBm) @ 50 MHz
+3
0
–11
–13
–19
–27
–32
–39
–49
–51
–53
–60
3. Using the power splitter, coaxial cable, adapters and fixed attenuator, connect the Spectrum Mas-
ter to the signal source and the power sensor as shown in Figure 2.
4. On the power meter, press the
and enter 50 MHz for the Input Signal Frequency. This sets the power meter to the proper power
sensor cal factor. Press the
5. Connect the external power supply (Anritsu part number 40-168) to the Spectrum Master.
6. On the Spectrum Master, press and hold the
turn on the Spectrum Master. (This sets the instrument to the factory preset state.)
7. Press the
BW/SWEEP
8. Press the
RBW Manual
the resolution bandwidth to 1 kHz.
Spectrum Master MM
key and then the
Sensor
key to display the power reading.
Sensor
ESCAPE/CLEAR
key and the Bandwidth soft key.
soft key and use the Up/Down arrow key to select
Desired Sensor B Reading
soft key. Select the
CalFactor
key, then press the
1 kHz
soft key
FREQ
key to
ON/OFF
. Press to set
ENTER
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