4.
FREQUENCY ACCURACY
The following test can be used to verify the CW frequency
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 Mas-
ter. (This sets the instrument to the factory pre-
set state.)
NOTE
Before continuing, allow a five minute
warm up for the internal circuitry to sta-
bilize.
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 Master Re-
flection 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
Preset
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
2
,
5
,
0
, and
kHz
keys sequen-
tially to change the Frequency Span to 250
kHz.
(f) Press the
RBW
key.
(g) Press the
3
,
0
and
kHz
keys sequentially
to change the RBW to 30 kHz.
(h) Press the
VBW
key.
2
Site Master S113BQ 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
