MAINTENANCE MANUAL
Site Master™ Series
Personal SWR/RL and Fault Location Testers
1. INTRODUCTION
This manual provides maintenance instructions for
the Site Master S110, S111, S112, S113, S330,
S330A, S331, and S331A Personal SWR/ RL and
Fault Location Testers. It describes the product and
provides performance verification procedures, parts
replacement procedures, and a replaceable parts list.
2. DESCRIPTION
The Site Master (Figure 1) is a hand held SWR/RL
(standing wave ratio/return loss) and Distance-To-
Fault measurement instrument. It combines a syn
-
thesized source, VSWR Bridge, and receiver on a
single printed circuit board (PCB). An optional
power monitor is also available. A block diagram is
shown in Figure 2.
3. PERFORMANCE VERIFICATION
Paragraphs 4 through 7 contain tests that can be
used to verify the performance of the Site Master
and its components. These tests support the follow-
ing models of the Site Master series having any ver
-
sion of firmware; S110, S111, S112, S113, S330,
S330A, S331, and S331A.
3.1. Initial Setup for Testing
1. Press and hold the ESCAPE/CLEAR key,
then press the ON/OFF key to turn on
the Site Master. (This sets the instru
-
ment to the factory preset state.)
2. For models where there is no display
contrast control on the top panel, release
the ESCAPE/CLEAR key and use the
Up/Down Arrow key to adjust the con
-
trast to give a readable display.
RF
Det
Site Master S331A
Serial
Interface
External
12V
Battery
Charging
12-15V DC
(45C mA)
MARKER
SAVE
DISPLAY
RECALL
DISPLAY
LIMIT
SAVE
SETUP
RECALL
SETUP
CAL
ENTER
ON
OFF
RUN
HOLD
ESCAPE
CLEAR
AUTO
SCALE
START
CAL
1
2
4
3
5
6
8
9
0
7
Te st
Port
Figure 1. Site Master S331A
490 JARVIS DRIVE ¨ MORGAN HILL, CA 95037-2809
P/N: 10580-00008
REVISION E
PRINTED: JANUARY 2001
COPYRIGHT 1996-2001 ANRITSU CO.