Second Printing
February 1996
Supersedes 004-3039-274 May 1995
VR-CM50 CONSOLE SYSTEM
INSTALLATION GUIDE
Copyright 1995 by the E.F. Johnson Company
The E.F. Johnson Company designs and manufactures two-way radio equipment to serve a wide variety of communications
needs. Johnson produces equipment for the mobile telephone and land mobile radio services which include business, industrial, government, public safety, and personal users. In addition, Johnson designs and manufactures electronic components used
in communications equipment and other elect r oni c devi ces .
LAND MOBILE PRODUCT WARRANTY
The manufacturer’s warranty statement for this product is available from your product supplier or from the E.F. Johnson
Company, 299 Johnson Avenue, Box 1249, Waseca, MN 56093-0514. Phone (507) 835-6222.
WARNING
This device complies with Part 15 of the FCC rules. Operation is s ubject to the condition that this device does not cause
harmful interference. In addition, changes or modification to this equipment not expressly approved by E. F. Johnson could
void the user’s authority to operate this equipment (FCC rules, 47CFR Part 15.19 ).
DO NOT allow the antenna to come close to or touch, the eyes, face, or any exposed body parts while the radio is transmitting.
DO NOT operate the radio near electrical blasting caps or in an explosive atmosphere.
DO NOT operate the radio unless all the radio frequency connectors are secure and any open connectors are properly terminated.
DO NOT allow children to operate transmitter equipped radio equipment.
SAFETY INFORMATION
Proper operation of this radio will result in user exposure below the Occup ational Safety and Health Act and Federal Communication Commissi on limi t s .
The information in this document is subject to change without notice.
This merchandise was carefully packed and thoroughly inspected before leaving our factory. Responsibility for its saf e delive ry was assumed by the carr ier
upon acceptance of the shipment. Claims for loss or
damage sustained in transit must therefore be made
upon the carrier as follows:
1.1.1 VISIBLE LOSS OR DAMAGE
Any external evidence of l o ss or d amage mu st b e
noted on the freight bill or express receipt and signed
by the carrier’s agent. Failure to adequately describe
such external evid ence of loss o r damage may result in
the carrier refusing to honor a damage claim. The
form required to file such a claim is supplied by the
carrier.
1.1.2 CONCEALED LOSS OR DAMAGE
tor, PC and UPS units for CRT-based consoles. You
are strongly advised to save at least one shipping carton for each of these devices in the event a return for
repair is needed.
You as the consignee, are responsible for filing
any claims for loss or damage. E.F. Johnson will
assist you in establishing the value of the claim after
you have filed the claim with the carrier. Call the
Customer Service Department at 1-800-328-3911 for
further assistance.
1.1.3 PACKING LIST
Since this product is cus tom designed to meet our
customer’s needs, it is not practical to pack our products in any specific pattern.
As each loose item (see Note below) is packed it
is noted on the Packing List (see Table 1-1).
1.1.4 UNPACKING THE SHIPMENT
Concealed loss or damage means ; loss or damag e
that is not apparent until the merchandise has been
unpacked. The contents may be damaged in transit
due to rough handling even though the carton or cabinet may not show external damage. When the damage is discovered upon unpacking, you must make a
As each item is removed from the container,
please check it against the Packing List. If there are
any discrepancies, please contact Customer Service,
1-800-328-3911, within 7 days of receipt. E.F.
Johnson cannot be held responsible for discrepancies beyond this 7 day period.
written request for inspection by the carrier’s agent
within 15 days of the delive ry date . Then file a claim
with the carrier since such damage is the carrier’s
responsibility .
Note: Commercial items packaged in the original
manufacturer’s container(s) are considered loose
items. Items packaged within their containers, by the
manufacturer (power cords, etc.), are not considered
It is a requirement of certain OEM vendors that
equipment returned for repair must be shipped in its
loose items and are not listed on the E.F. Johnson
Packing List.
original carton. This specificallyapplies to the Moni-
Table 1-1 SAMPLE PACKING LIST
Container NumberPart NumberDescriptionQuantity
1A100960Headset Jack Assy2
............
1-1
February 1996
Part No. 004-3039-274
PRE-INSTALLATION INFORMATION
1.1.5 TOOLS REQUIRED
The following tools are needed for the mechanical assembly and installation of the VR-CM50 Console System:
1/4" Flat Blade Screwdriver
#1 Phillips Screwdriver
#2 Phillips Screwdriver
7/16" Open End Wrench
3/8" Nut Driver
3/16" Ball Point Driver
3/8" Square Drive 3/16" Hex Bit
If you are in stalling cabinetry, the tools required
Figure 1-1 HARDWARE INCLUDED FOR INSTALLATION AND ASSEMBLY
February 1996
Part No. 004-3039-274
1-2
CENTRAL PROCESSOR PACKAGE INSTALLATION
SECTION 2 CENTRAL PROCESSOR PACKAGE INSTALLATION
2.1 LOCATION OF THE CENTRAL PROCESSOR PACKAGE (CPP)
In selecting a location for the Central Processor
Package (CPP) equipment cabinet, the following criteria should be considered :
1. Avoid locations which are subject to high ambient
temperatures, excessive moistu re, fl oodi ng, excessive dust or infestation by insects or small animals.
2. The cabinet must be placed in an indoor location
having a floor area l arge enough to allow access to
both the front and rear of the cabinet. The minimum
cabinet size is 21" wide by 26" deep. In addition,
wall space will be re qui red for the common ground
bracket, surge arrestor box(es) and any additional
RTL punch block(s).
3. A single, 120 VAC, 15/20 amp dedicated branch cir-
cuit is require d for CPPs of 60 c ard capacity or l ess.
Two such branch circuits are required for packages
equipped with 60 to 120 cards. Systems ordered
with options TDM-OP200/E, /GB, /I and /NZ
require 230 VAC circuits. If the building is
equipped with an emergency generator, the CPP
branch circuits should be part of the emergency
power system.
4. An earth ground bond must be provided. A contin-
uous copper cold water pipe or driven copper
ground rod are suitable grounds. Electrical con duit,
steam lines, sprinkler system l ines, util ity ma ins or
building steel may not be used as ground bonds.
Note: Verify the ground integrity yourself. It is
risky to blindly trust grounds used by others.
5. The cable run to any console location may not
exceed 4000 feet, using E.F. Johnson-provided
cable. If the console is located in a different building or if the cabl e route place s its proximity t o other
electrical lines that can induce interference, the use
of a Remote Interface Adapter (RIA) is required.
6. In placement of the cabinet, the front door of the
enclosure must be readily accessible for service.
7. A connection to an ou tside telephone lin e is required
for diagnostic modem access. If a dedicated
modem line cannot be provided, an administrative
line or a phone pa tch line can be used by r outing the
line through the modem. Progr amming the modem
to auto-answer after several rings, will allow the
line to be used for normal voic e operation as well as
CPP diagnostics.
8. Mounting space will be required for the system
diagnostic printer (TDM-OP205). If the CPP is
housed in a 60" c abinet, the printer can be p laced on
top of the CPP. If the CPP is housed in a 88" cabinet, a shelf must be provided for the printer. The
printer is supplied with a tab le-top stand which provides paper supply storage and an output tray. Do
not attempt to mount the printer inside the CPP cabinet.
2.2 ASSEMBLY OF THE CENTRAL PROCES-
SOR PACKAGE (CPP) CABINETRY
If the CPP is housed in a single cabinet (30 cards
or less in a 60" cabinet, 60 cards or less in a 88" cabinet), no field assembly is required. If the CPP
requires two or more cabinets, each cabinet section
will be shipped separately to facilitate handling.
Assembly of the cabinets is illustrated bel ow in Figure 2-1. Be sure to install all of the required hardware; do not omit any bolts or lockwashers.
The hardware in Table 2-1 is included in Assembly A2809201 for joining 2 - 60" CPU Cabinets and
Assembly A2809301 for joining 2 - 88" CPU Cabinets:
Table 2-1 CPU CABINET HARDWARE
Qty.Part No.Description
Joining 2 - 60" CPU Cabinets
6
28011H0B2012
6
280211082041
2
240B25312420
Joining 2 - 88" CPU Cabinets
8
28011H0B2012
8
280211082041
2
240B25312420
1/4"-20 Hex Bolt
1/4"-20 Keps Nut
2.5" Bushing Snap Ring
1/4"-20 Hex Bolt
1/4"-20 Keps Nut
2.5" Bushing Snap Ring
2-1
February 1996
Part No. 004-3039-274
CENTRAL PROCESSOR PACKAGE INSTALLATION
February 1996
Part No. 004-3039-274
Figure 2-1 REAR VIEW - JOINING TWO CPU CABINETS
2-2
CENTRAL PROCESSOR PACKAGE INSTALLATION
2.3 CONNECTION OF THE CENTRAL PROCESSOR PACKAGE CABLES
When multiple CPP cabinets are reuired, the system layout will have been designed to minimize the
cabling needed between cabinets. At minimum, it will
be necessary to connect the ribon cables from the
Inter-Cabinet Repeater (ICR) cards in the first cabinet,
to the backplanes and power supplies in the expansion cabinets. Depending on the size of the CPP, the
cables are marked with either RED DOTS or GREEN
DOTS.
Connect the cables ma rked wit h a RED do t to the
Line Terminator Board, which is also marked with a
RED dot. Perform the same procedure if the cables
are marked with GREEN dots (see Figure 2-2.
In some cases, it may be neces sary to co nnect I/O
ribbon cables or intercabinet mute wiring. Instructions for these details are unique to each system and
will be found in a doc ument titled "Installat ion Notes"
at the front of the "Customer Data" Section in in Volume 1 of the VR-CM50 Console Service Manual.
2.3.1 CABLE ROUTING
60" CPP cabinets are designed for cable feed
from the bottom of the cabinet.
80" CPP cabinets are designed to accept cable
feeds from either the top or the bottom of the cabinet.
88" CPP cabinets are shipped with the assumpt ion that
the cables will feed from the top or from beneath the
floor. If cable access through the bottom rear cowl is
desired, remove the black hole plugs from the cowl
and exchange them with the cable bushings in the top
vent panel.
Figure 2-2 CPU CABINET CABLE CONNECTIONS
2-3
February 1996
Part No. 004-3039-274
CENTRAL PROCESSOR PACKAGE INSTALLATION
2.4 MOUNTING OF SURGE ARRESTOR BOXES AND GROUND BRACKET
2.4.1 PLACEMENT OF SURGE ARRESTOR
BOXES
The surge arrestor box(es) may be mounted
directly on a wall or on a plywood board at a location
near the central equipment cabinet. (Be sure the
ground lug is on top).
Figure 2-3 gives a general idea of how the Surge
Arrestor Boxes would appear o n a t ypical pane l boar d
complete with the common copper ground bracket
assembly.
2.4.2 WALL OR PANEL BOARD INSTALLATION
Use 1/4" diameter screws (not furnished) to
attach the surge arrestor boxes and the common
ground bracket assemb ly t o the wall . Wall mount keyholes (see Figure 2-3) are provided on the surge arrestor boxes. If the wall is of masonry construction,
again, the use of a plywood sub-panel is recommended.
C A U T I O N
DO NOT mount with the ground lug on the bottom.
Figure 2-3 MOUNTING SURGE ARRESTOR BOXES AND GROUND BRACKET
February 1996
Part No. 004-3039-274
2-4
CENTRAL PROCESSOR PACKAGE INSTALLATION
2.5 GROUNDING THE SYSTEM
Proper grounding is the single most important
consideration in installing the system. Poor or incorrect grounding can lead to unpredictable and erratic
performance problems, damage to system components in the event of lightning or power surges and
injury to personnel in extreme cases.
The VR-CM50 uses a STAR GROUNDING SYSTEM (below) in which each console is individually
bonded to a common point at the CPP using a #6
insulated wire. Connectivity instructions with
exploded views are continued on the following pages.
I M P O R T A N T
Ground the system before connecting any radio tie
lines or AC power to the system.
Figure 2-4 STAR GROUNDING CONFIGURATION
2-5
February 1996
Part No. 004-3039-274
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