Anritsu Company Site Master S312D, Maintenance Manual, Page: 22 / 62

2-8 Spectrum Analyzer Resolution Bandwidth Accuracy Verification Performance Verification
2-12 PN: 10580-00195 Revision B S312D MM
2-8 Spectrum Analyzer Resolution Bandwidth Accuracy Verification
The following tests can be used to verify the resolution bandwidth accuracy of the Site Master Spectrum
Analyzer at different frequencies.
Required Equipment (refer to
Table 1-1
):
• Anritsu Model MG3692x Synthesized Signal Generator
• Frequency Reference Symmetricom Rubisource T&M
• Site Master S312D
Procedure:
1. Connect the 10 MHz reference source to the Synthesized Signal Generator and the Ext Freq Ref input of
the Site Master. (Refer to
Figure 2-4 .)
2. Connect the output of the Synthesized Signal Generator to the Site Master Spectrum Analyzer RF Input.
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 1 GHz, 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.
8. Press the
Scale
soft key and enter
3
, then press
ENTER
.
9. Press the
FREQ/DIST
key and the
Center
soft key.
10. Enter
1
and press the
GHz
soft key to set the center frequency to 1 GHz.
1 MHz RBW Test
1. Press the
Span
soft key, enter
1.5
and press the
MHz
soft key to set the span to 1.5 MHz.
2. Press the
MEAS/DISP
key and the
Bandwidth
soft key.
3. Press the
RBW Manual
soft key and use the
Up/Down
arrow key to select
1 MHz
. Press
ENTER
to set the
resolution bandwidth to 1 MHz.
4. Press the
VBW Manual
soft key and use the
Up/Down
arrow key to select
3 kHz
and press
ENTER
to set
the video bandwidth to 3 kHz and press
BACK
.
5. Press the
Measure
soft key, the
OBW
soft key, the
dBc
soft key, and then the
ENTER
key.
6. Press the
Measure
soft key, then the
MARKER
key. Press the
M2
soft key and then the
Delta (M2–M1)
soft key. Record the Δ 2 frequency in Table A-6, “Spectrum Analyzer Resolution Bandwidth Accuracy
Verification” on page A-4 .
300 kHz RBW Test
1. Press the
FREQ/DIST
key.
2. Press the
Span
soft key, enter
450
and press the
kHz
soft key to set the span to
3. 450 kHz.
4. Press the
MEAS/DISP
key and the
Bandwidth
soft key.
5. Press the
RBW Manual
soft key and use the
Up/Down
arrow key to select
300 kHz
. Press
ENTER
to set the
resolution bandwidth to 300 kHz and press
BACK
.
6. Press the
Measure
soft key and then the
MARKER
key.
7. Press the
M2
soft key. Record the
Δ
2 frequency in Table A-6 .