INSTALLATION
2-6
May 2000
Part No. 001-2008-204
If everything appears undamaged, remove the
Repeater equipment from the crate, using normal pre-
cautions for unpacking.
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. Transcrypt Internation, Inc.
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 (refer-
ence 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 soft-
ware version, see Section 4.5.4) that connects to a
HSDB that is also servicing LTR 8000/8900 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 cabinet (see Figure
2-13 and Figure 2-14).
Systems constructed only with LTR VIKING VX
repeaters that have Version 202 or later HSDB soft-
ware ( see Section 4.5.4) 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 2-14.
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
