4. RETURN LOSS VERIFICATION
The following test can be used to verify the accuracy
of return loss measurements. Measurement calibra
-
tion of the Site Master is required for this test.
a. Equipment Required:
·
20 dB offset, Anritsu SC5270
·
6 dB offset, Anritsu SC5237
·
Open/Short, Anritsu 22N50
·
50 Ohm Termination,
Anritsu 28N50-2 or SM/PL
b. Procedure:
1. 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.)
NOTE
Before continuing, allow a five minute warm
up for the internal circuitry to stabilize.
2. Press the
MODE key.
3. Use the Up/Down arrow key to highlight
RETURN LOSS, then press ENTER.
4. Press the
START CAL key.
5. Follow the instructions on the screen to
perform a calibration using a 22N50
Open/Short and 28N50-2 or SM/PL Ter-
mination.
6. Connect the 20 dB offset to the Refl Test
Port and verify that the reading is 20 dB
± 1.7 dB.
7. Connect the 6 dB offset to the Refl Test
Port and verify that the reading is 6 dB
± 1.2 dB.
5. SPECTRUM ANALYZER FREQUENCY
ACCURACY
The following test can be used to verify the CW fre
-
quency accuracy of the Site Master Spectrum Ana
-
lyzer.
a. Equipment Required:
·
Anritsu MG3692A Synthesized Signal
Source, with options 4 and 15A
·
10 MHz Reference Standard
b. Procedure:
1. Connect the 10 MHz reference source to
the Anritsu MG3692A Synthesized Sig
-
nal Source.
2. Connect the output of the source to the
RF Input of the Site Master.
3. Connect the external power supply
(Anritsu part number 40-115) to the Site
Master.
4. 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.)
5. Turn on the 10 MHz reference source
and the Anritsu MG3692A Synthesized
Signal Source.
6. Set the MG3692A output to 1000 MHz
CW for the S114C (2000 MHz CW for the
S332C), with an RF output level of 0
dBm.
NOTE
Before continuing, allow a 30-minute warm up
for the internal circuitry to stabilize.
7. On the Site Master, press the
MODE key.
Use the up/down arrow key to highlight
SPECTRUM ANALYZER and press ENTER
to select spectrum analyzer mode.
8. Press the
AMPLITUDE key and the REF
LEVEL
soft key.
9. Enter 20 and press the
ENTER key to set
the Reference Level to 20 dBm.
10. Press the
FREQ/DIST key and the CENTER
soft key.
11. For the S114C, enter
1000 and press the
MHz soft key to set the center frequency
to 1000 MHz. For the S332C, enter
2000
and press the MHz soft key to set the cen
-
ter frequency to 2000 MHz.
12. Press the
SPAN soft key and enter 50.
Press the
kHz soft key to set the span to
50 kHz.
13. Press the SWEEP key.
14. Press the
RBW soft key and then the
MANUAL soft key. Use the Up/down arrow
key to select
10 kHz. Press ENTER to set
the resolution bandwidth to 10 kHz and
press the
BACK soft key.
2 Site Master S114C/S332C MM
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