
4. FREQUENCY ACCURACY
The following test can be used to verify the CW fre-
quency accuracy of the Site Master. Measurement
calibration of the Site Master is not required for this
test.
a. Equipment Required:
·
Spectrum Analyzer Anritsu Model
MS2663C or equivalent
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
FREQ/DIST key, then press the
F1 soft key and set F1 to 1000 MHz, then
press the
ENTER key.
3. Press the
F2 soft key, set F2 to 1000
MHz, then press the
ENTER key.
4. Connect the RF cable from the Site Mas
-
ter Reflection Test Port to the RF Input
on the MS2663C or equivalent.
5. Set up the Spectrum Analyzer as follows:
(a) Press the
Preset key, then select Pre
-
set All
(F1).
(b) Press the
Frequency key.
(c) Press the
1 key and then the GHz key
to change the Center Frequency to 1
GHz.
(d) Press the
Span key.
(e) Press the
7, 5, 0, and kHz keys se
-
quentially to change the Frequency
Span to 750 kHz.
(f) Press the
RBW key.
2 Site Master S113C/S331C/S115BQ MM
L O
x
x
D i v i d e r /
M u l t i p l i e r
S D
C o u p l e r
S D
A D C
T e s t
P o r t
D i s p l a y
C P U
S e r i a l
P o r t
R F
S o u r c e
Figure 2. Site Master Block Diagram
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