Anritsu Company Site Master S312D, Руководство по обслуживанию

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2-7 Input Related Spurious Response Verification Performance Verification
2-10 PN: 10580-00195 Revision B S312D MM
25. Press the
RUN/HOLD
key to read and record a total of five values into Table A-4 , then calculate the
average of the five recorded values, and enter the average into Table A-4 .
26. Subtract 30 dB from the average value and record the calculated value into Table A-4 , Verify that the
result is
≤
– 75 dBc/Hz.
2-7 Input Related Spurious Response Verification
The following test can be used to verify the input related spurious response of the Site Master Spectrum
Analyzer.
Required Equipment (refer to
Table 1-1
):
• Anritsu Model MG3692x Synthesized Signal Generator
• Frequency Reference Symmetricom Rubisource T&M
• Lowpass Filter, Anritsu Part Number 1030-96 (RLC Electronics)
• Site Master S312D
Procedure:
1. Connect the 10 MHz reference source to the Synthesized Signal Generator as shown in Figure 2-5 .
2. Connect one end of the 50 MHz Low Pass Filter to the output of the source and the other end to the
Site Master Spectrum Analyzer RF Input with the coaxial cable.
3. On the Site Master, press and hold the
ESCAPE/CLEAR
key, then press the
ON/OFF
key to turn on the
Site Master. (This sets the instrument to the factory preset state.)
4. Set the Synthesized Signal Generator output to 40 MHz CW, with an RF output level of –30 dBm.
5. On the Site Master, press the
MODE
key. Use the
Up/Down
arrow key to highlight
Spectrum Analyzer
,
then, press the
ENTER
key to select spectrum analyzer mode.
6. Press the
AMPLITUDE
key and the
Ref Level
soft key.
7. Enter
–27
and press the
ENTER
key to set the Reference Level to –27 dBm.
Figure 2-5. Input Related Spurious Response Verification Test Setup
HOLD
RUN
START
CAL AUTO
SCALE
SAVE
SETUP RECALL
SETUP
LIMIT MARKER
SAVE
DISPLAY RECALL
DISPLAY
PRINT
SYS
ENTER
CLEAR
ESCAPE
ON
OFF
1 2
4
5
6
7 8
0 9
3
MODE FREQ/DIST AMPLITUDE MEAS/DISP
SiteMaster
S332D
Site Master
1
MG369XA Source
10 MHz Reference
to rear panel
connector
S312D
Low Pass
Filter