Anritsu Spectrum Master MS2711D Maintenance Manual page 34

11. Record Sensor B reading in column D of Table 14.
12. Calculate the Splitter/Attenuator Combined Loss using the following formula and record the re-
sult in column C of Table 14: C = A - B
13. Calculate the Sensor B path Power Splitter Loss using the following formula and record the re-
sult in column E of Table 14: E = A - D
14. Repeat steps 5 to 13 for 5153 MHz, 5284.9 MHz, and 5800 MHz.
15. Calculate the desired Sensor B reading for -60 dBm Test Power Level using the following for-
mula: Desired Sensor B reading = Desired Test Power Level + C – E
16. Record the calculated results in Table 15.
Table 15. Level Accuracy with Frequency Test Setting
Freq (MHz)
4750
5153
5284.9
5800
17. Using the power splitter, coaxial cable, adapters and fixed attenuator, connect the FCN4760 to
the signal source and the power sensor as shown in Figure 3.
18. Connect the external power supply (Anritsu part number 40-168) to the Spectrum Master.
19. Press and hold the
ter.
20. Press the
BW/SWEEP
21. Press the
RBW Manual
the resolution bandwidth to 1 kHz.
22. Press the
VBW Manual
set the video bandwidth to 100 Hz.
23. Press the
FREQ/SPAN
24. Press the
Span
25. Press the
AMPLITUDE
26. Press the
Ref Level
dBm.
27. Press the
FREQ/SPAN
28. Enter and press the
4750
29. On the Power Meter, press the
and enter 4750 MHz for the Input Signal Frequency. This sets the power meter to the proper
power sensor cal factor. Press the
30. Set the MG3692A output to 4750 MHz CW. Adjust the source power level so that the power me-
ter displays the corresponding desired Sensor B reading for –60 dBm (as recorded in Table 15).
31. On the Spectrum Master, press the
32. Select
Marker To Peak
33. Verify that the M1 reading is within ±2.25 dB.
30
Desired Sensor B Reading for –60 dBm @ Attenuator Output
key and press the
ESCAPE/CLEAR
key and the
Bandwidth
soft key and use the Up/Down arrow key to select
soft key and use the Up/Down arrow key to select
key.
soft key and enter , then press the
.10
key.
soft key, enter and press the
10
key and the
Center
soft key to set the center frequency to 4750 MHz.
MHz
key and then the
Sensor
Sensor
MARKER
to position the marker at the center of the response for the test frequency.
key to turn on the Spectrum Mas-
ON/OFF
soft key.
key to set the span to 0.10 MHz.
MHz
key to set the reference level to –40
ENTER
soft key.
soft key. Select the
CalFactor
key to display the power reading.
key, then the soft key.
M1
. Press to set
1 kHz ENTER
. Press to
100 Hz ENTER
soft key
FREQ
Spectrum Master MM