INSTALLATION
2-6
August 2000
Part No. 001-2001-200
NOTE: Do not discard the packing materials. If you
must return an item; use the same packing materials
and methods (including static protective bags for cir-
cuit cards) to repack the equipment. You are responsi-
ble for proper repacking. E.F. Johnson cannot be
responsible for damage to equipment caused by
negligence.
NOTE: Repeaters should not touch, leave a minimum
of one empty screw hole (approximately 1/2") between
repeaters vertically especially for bottom ventilation
slots in high power repeaters.
NOTE: Each repeater should be grounded separately
by connecting a ground bus from the ground lug on the
back side of the RF module to the ground bar on the
rack (see Figure 2-8).
2.9 REPEATER DATA BUS INSTALLATION
VIKING VX repeaters with High Speed Data Bus
(HSDB) software Version 201 or earlier (reference
U14 label) installed on the MPC board must use the
optional RJ-11 to BNC Adapter Module (see Table 1-1
and Figure 2-9) to connect the HSDB. Any VIKING
VX repeater (regardless of the HSDB software ver-
sion) that connects to a HSDB that is also servicing
LTR 1010 repeaters, other VIKING VX repeaters that
use VIKING VNC cards, or an ID Validator must also
use the adapter module. The BNC Adapter Module is
installed on the back of the VIKING VX repeater cabi-
net (see Figure 2-13).
Systems constructed only with LTR VIKING VX
repeaters that have Version 202 or later HSDB soft-
ware and do not use VNC cards can be connected
directly to the HSDB from the RJ-11 jack on the back
of the repeater.
2.9.1 MPC DATA BUS SWITCH SETTINGS
Switch settings on the MPC for the two types of
installations require S2 and S3 sections to be switched
as indicated in Figures 2-10 through 2-13.
2.9.2 MPC DATA BUS JUMPER SETTINGS
Refer to Figure 2-6 for crystal selection and
HSDB Code selections jumper placement. The
jumper on J5, pins 2-3 selects 12 MHz crystal for LTR.
The jumper on J4, pins 3-4 connects EPROM U14, pin
27 (A14) to +5V for LTR single-ended 5V data bus.
Figure 2-5 5-CHANNEL COMBINING SYSTEM
RECEIVER 1
RECEIVER 2
RECEIVER 3
RECEIVER 4
RECEIVER 5
RECEIVER
MULTICOUPLER
PREAMPLIFIER
FILTER
DUPLEXER
TRANSMITTER
COMBINER
TRANSMITTER 1
TRANSMITTER 2
TRANSMITTER 3
TRANSMITTER 4
TRANSMITTER 5
T/R ANTENNA
BANDPASS
Содержание 242-20X1-213
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Страница 94: ...CIRCUIT DESCRIPTION 6 44 August 2000 Part No 001 2001 200 ...
Страница 118: ...ALIGNMENT AND TEST PROCEDURES 7 20 August 2000 Part No 001 2001 200 ...
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