E.F. Johnson Company 242-20X1-213, Руководство пользователя

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1-1
August 2000
Part No. 001-2001-200
INTRODUCTION AND OPERATION
SECTION 1 INTRODUCTION AND OPERATION
1.1 SCOPE OF MANUAL
This service manual provides installation, opera-
tion, programming, service, and alignment informa-
tion for the VIKING

VX LTR

Repeater, Part No.
242-20X1-213.
1.2 REPEATER DESCRIPTION
The VIKING VX repeater is designed for opera-
tion in a Johnson LTR system. It operates on the VHF
channels from 132-178 MHz. Channel spacing is
12.5/25 kHz and RF power output is adjustable from
25 to 125 watts.
This repeater is modular in design for ease of ser-
vice. There are separate assemblies for the logic
cards, receiver
,
exciter, power amplifier and power
supply sections.
This repeater is programmed with a laptop or per-
sonal computer using the 2000 Series Programmer
software, Part No. 023-9998-390.
The VIKING VX repeater interfaces with a MPC
(Main Processor Card) and MAC (Main Audio Card)
to provide LTR operation. All signal ports used to
interface to the Repeater are on J2 located at the back
of the cabinet.
1.3 REPEATER IDENTIFICATION
The repeater identification number is printed on a
label that is affixed to the inside of the repeater cabi-
net. The following information is contained in that
number:
Figure 1-1 REPEATER IDENTIFICATION
20X4X
Week Year A= Waseca
Number
Warranty Plant
Date
Manufacture
Letter
Revision
12345 A 3 24 A
Repeater
ID
1.4 MODEL NUMBER BREAKDOWN
The following breakdown shows the part num-
ber scheme used for the Viking VX.
Figure 1-2 PART NUMBER BREAKDOWN
1.5 ACCESSORIES
The accessories available for the Viking VX LTR
repeater are listed in Table 1-1. A brief description of
some of these accessories follows.
2-Wire Telephone Interconnect Card (TIC) - This
card provides an interface between the Repeater and a
phone line to permit telephone calls to be placed to
and from mobile transceivers.
LTR System ID Validator - If an invalid ID is
detected on the repeater data bus, the audio of the
mobile receiving the call is disabled.
2000 Series Service Kit - This kit contains an alarm
wire harness, extender power cable, programming kit,
extender card, extender harness, and a TIC bias cable.
These items are used when tuning the repeater and
while troubleshooting.
Battery Backup and Cable Option - This option can
be factory or field installed (refer to installation
instructions 004-2000-830). It includes the battery
backup module that resides in the power supply and
the necessary interconnect cabling to connect the
repeater to the batteries (see Section 2.5).
RJ-11 to 6-BNC Adapter - This adapter box pro-
vides connections for the high speed data bus at the
rear of the repeater and the data bus from the logic
drawers in existing repeater systems.
3 242- 2 0 X 1 -
VHF
1
12.5/25 kHz
2
25-110W
3 = 150-174 MHz
1 = 132-150 MHz
LTR