Rhein Tech Laboratories Client: M/A COM, Inc.
360 Herndon Parkway Model: MastrIII w/Sitepro Base Station
Suite 1400 Standards: FCC Part 90/IC RSS-119
Herndon, VA 20170 Report Number: 2003083
http://www.rheintech.com
Date: June 6, 2003
APPENDIX G: MANUAL
Please refer to the following pages.
48 of 52
Installation Manual
Preliminary
LBI-38636S
MASTR
Conventional Base Station
III
LBI-38636S
NOTE
Repairs to this equipment should be made only by an authorized service technician or facility designated by the supplier.
Any repairs, alterations or substitution of recommended parts made by the user to this equipment not approved by the
manufacturer could void the user’s authority to operate the equipment in addition to the manufacturer’s warranty.
NOTICE!
The software contained in this device is copyrighted by M/A-COM Private Radio Systems, Inc. Unpublished rights are
reserved under the copyright laws of the United States.
This manual is published by
typographical errors, inaccuracies of current information, or improvements to programs and/or equipment, may be made by
Systems, Inc.,
reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, for any purpose, without the
express written permission of
Copyright 1992-2002 M/A-COM Private Radio Systems, Inc. All rights reserved.
at any time and without notice. Such changes will be incorporated into new editions of this manual. No part of this manual may be
2
M/A-COM Private Radio Systems, Inc.,
M/A-COM Private Radio Systems, Inc.
without any warranty. Improvements and changes to this manual necessitated by
M/A-COM Private Radio
LBI-38636S
TABLE OF CONTENTS
Page
PRODUCT SPECIFICATION FOR CE MARKED EQUIPMENT ..................................................................................4
MAXIMUM PERMISSIBLE EXPOSURE (MPE) LIMITS.............................................................................................. 5
SAFETY TRAINING INFORMATION ............................................................................................................................ 5
STATION SPECIFICATIONS (GENERAL) .................................................................................................................... 7
GROUND THE EQUIPMENT ...................................................................................................................................... 9
REPLACEMENT OF PLUG-IN CIRCUIT MODULES ............................................................................................... 9
STATION POWER SUPPLY ...................................................................................................................................... 10
Single 37-inch Cabinet Installation........................................................................................................................... 10
AC Power ................................................................................................................................................................. 12
Types Of Voice Grade Lines .................................................................................................................................... 12
Tone Remote Control Systems ................................................................................................................................. 14
Voting System Considerations.................................................................................................................................. 15
Telephone Company Ordering Information.............................................................................................................. 16
TELEPHONE LINE INSTALLATION ....................................................................................................................... 16
DC Remote Installation ............................................................................................................................................16
E & M Signaling....................................................................................................................................................... 16
Tone Remote Installation.......................................................................................................................................... 17
STATION SETUP............................................................................................................................................................ 21
REMOTE CONTROLLER TO STATION CONTROL PANEL ADJUSTMENTS ................................................... 30
LINE OUT LEVEL ADJUSTMENT ...........................................................................................................................30
LINE IN LEVEL ADJUSTMENT ............................................................................................................................... 30
Figure 7 - Typical E & M Signaling Application..............................................................................................................18
Figure 15 - MASTR III System Module Pot Alignment................................................................................................... 24
The MASTR III Base Station and Auxiliary Receiver may be used in both trunked and conventional applications. Neither the
MASTR III Base Station nor the Auxiliary Receiver may be connected to leased lines in Europe without an additional linebarrier protection device.
4
LBI-38636S
MAXIMUM PERMISSIBLE EXPOSURE (MPE) LIMITS
Do not transmit with this basestation and antenna when persons are within the MPE Radius of the antenna. The MPE Radius
is the minimum distance from the antenna axis that ALL persons should maintain in order to avoid RF exposure higher than
the allowable MPE level set by the FCC.
FAILURE TO OBSERVE THESE LIMITS MAY ALLOW ALL PERSONS WITHIN
THE MPE RADIUS TO EXPERIENCE RF RADIATION ABSORPTION, WHICH
EXCEEDS THE FCC MAXIMUM PERMISSIBLE EXPOSURE (MPE) LIMIT. IT IS
THE RESPONSIBILITY OF THE BASESTATION OPERATOR TO ENSURE THAT
THE MAXIMUM PERMISSIBLE EXPOSURE LIMITS ARE OBSERVED AT ALL
WARNING
DETERMINING MPE RADIUS
THE MAXIMUM PERMISSIBLE EXPOSURE RADIUS HAS BEEN ESTIMATED TO BE A RADIUS OF 24 FEET
MAXIMUM ASSUMING THE HIGHEST EFFECTIVE RADIATED POWER (ERP) ALLOWABLE UNDER FCC
RULES FOR BASESTATION ANTENNA INSTALLATIONS. THIS ESTIMATE IS MADE ASSUMING
MAXIMUM ALLOWABLE ERP LEVEL BY THE FCC AND 100 PERCENT DUTY CYCLE. THE MPE
CALCULATIONS WERE MADE ASSUMING WORST CASE IN EACH BAND WITH RESPECT TO
FREQUENCY, ERP AND LIMIT. THE MAXIMUM ALLOWABLE ERP WAS DETERMINED FROM THE
APPLICABLE PART 90 RULES REGARDING POWER LIMITATION ( 90.205, 90.309, 90.635 ). THE LIMIT
USED WAS FOR UNCONTROLLED EXPOSURE. THE FORMULA USED WAS DERIVED FROM OET 65,
SECTION 2, EQUATION 4.
TIMES DURING BASESTATION TRANSMISSION. THE BASESTATION
OPERATOR IS TO ENSURE THAT NO BYSTANDERS COME WITHIN THE
RADIUS OF THE MAXIMUM PERMISSIBLE EXPOSURE LIMITS SHOWN BELOW.
SAFETY TRAINING INFORMATION
YOUR M/A-COM MASTR III BASESTATION GENERATES RF
ELECTROMAGNETIC ENERGY DURING TRANSMIT MODE. THIS BASESTATION
IS DESIGNED FOR AND CLASSIFIED AS “OCCUPATIONAL USE ONLY”
MEANING IT MUST BE USED ONLY IN THE COURSE OF EMPLOYMENT BY
INDIVIDUALS AWARE OF THE HAZARDS AND THE WAYS TO MINIMIZE SUCH
HAZARDS. THIS BASESTATION IS NOT INTENDED FOR USE BY THE “GENERAL
POPULATION” IN AN UNCONTROLLED ENVIRONMENT. IT IS THE
WARNING
This basestation has been examined and complies with the FCC RF exposure limits when persons are beyond the MPE radius
of the antenna. In addition, your M/A-COM basestation complies with the following Standards and Guidelines with regard to
RF energy and electromagnetic energy levels and evaluation of such levels for exposure to humans:
•
FCC OET Bulletin 65 Edition 97-01 Supplement C, Evaluating Compliance with FCC Guidelines for Human
Exposure to Radio Frequency Electromagnetic Fields.
•
American National Standards Institute (C95.1 – 1992), IEEE Standard for Safety Levels with Respect to Human
Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz.
RESPONSIBILITY OF THE BASESTATION OPERATOR TO ENSURE THAT THE
MAXIMUM PERMISSIBLE EXPOSURE LIMITS DETERMINED IN THE PREVIOUS
SECTION ARE OBSERVED AT ALL TIMES DURING TRANSMISSION. THE
BASESTATION OPERATOR IS TO ENSURE THAT NO BYSTANDERS COME
WITHIN THE RADIUS OF THE MAXIMUM PERMISSIBLE EXPOSURE LIMITS.
5
LBI-38636S
•
American National Standards Institute (C95.3 – 1992), IEEE Recommended Practice for the Measurement of
Potentially Hazardous Electromagnetic Fields – RF and Microwave.
TO ENSURE THAT YOUR EXPOSURE TO RF ELECTROMAGNETIC ENERGY IS
WITHIN THE FCC ALLOWABLE LIMITS FOR OCCUPATIONAL USE, ALWAYS
ADHERE TO THE FOLLOWING GUIDELINES:
CAUTION
DO NOT operate the basestation with an antenna that would cause an ERP in excess of that
allowable by the FCC.
Operating Temperature-30°C to +60°C
Humidity (EIA)90% at 50°C
AC Input Power 5 Amps at 120 Vac (-20%) 60 Hz
or
3 Amps at 230 Vac (-15%) 50 Hz
DC Input Power33 Amps at 13.8 Vdc (transmit, full power)
25 Amps at 13.8 Vdc (transmit, half power)
1.6 Amps at 13.8 Vdc (receive only, standBy)
1.75 Amps at 13.8 Vdc (receive only, 1 watt at
service speaker)
Service Speaker 1 watt at 8 ohms
Service MicrophoneDynamic
Notes:
1. Typical station consists of:
a. One T/R Shelf with plug-in modules.
b. One Power Amplifier.
c. One power supply unit.
d. One cabinet with doors.
2. One rack unit equals 1.75 inches.
LBI-38636S
INTERFACE
Line Interface
Line Interface 2-wire or 4-wire (programmable)
Line Cancellation (2-wire) 20 dB amplitude only (programmable)
Line Input (line to transmitter)
Line Terminating Impedance600 ohms (2-wire or 4-wire)
Line Input Level (adjustable)-20 dBm to +11 dBm
Frequency Response300 Hz to 3000 Hz
Line Input (receiver to line)
Line Terminating Impedance600 ohms (2-wire or 4-wire)
Line Output Level (adjustable)zero output to +11 dBm (ref at 1 kHz)
Frequency Response300 Hz to 3000 Hz, ±1 dB
Remote Control (Tone)
Control Tones (Hz)1050, 1150, 1250, 1350, 1450, 1550, 1650, 1750,
1850, 1950, 2050, & 2175
Secur-it 2175 Hz
FunctionProgrammable
Hold 2175 Hz
DC Remote Control
Control currents-2.5 mA, ±6.0 mA, ±11.0 mA
7
LBI-38636S
PUBLICATIONS INDEX
MASTR III BASE STATION Systems Combination Package .............................................................. LBI-38775
System Module ................................................................................................................................ LBI-38764
Power Module..................................................................................................................................LBI-38752
MASTR III PC Programmer...................................................................................................................... TQ-3353
MASTR III Installation Manual..............................................................................................................LBI-38636
RF Module Test Fixture..........................................................................................................................LBI-38805
MASTR III Utility Handset ....................................................................................................................LBI-38599
RF Package: High Band (136 - 174 MHz)..............................................................................................LBI-38754
Receiver Front End Module.............................................................................................................LBI-38642
IF Module ........................................................................................................................................LBI-38643
Power Amplifier ..............................................................................................................................LBI-38531
Receiver Front End Module.............................................................................................................LBI-38673
IF Module ........................................................................................................................................LBI-38643
Power Amplifier ..............................................................................................................................LBI-38674
IF Module ........................................................................................................................................LBI-39029
Power Amplifier ............................................................................................................... (100 W)LBI-39030
AE/LZB 119 3521/1
Power Amplifier ................................................................................................................ (110 W)LBI-39127
Power Supply................................................................................................................................... LBI-38550
Power Supply (800 MHz).......................................................................................................................LBI-38551
Emergency Power (Battery Charger)...................................................................................................... LBI-38625
NOTE: Indented maintenance manuals are included with the header (cover) maintenance manual.
LBI-39176
LBI-39123
LBI-39129
LBI-39123
LBI-38880
LBI-38881
8
LBI-38636S
Figure 1 - Typical 37-inch MASTR III Stations
SAFETY SUMMARY
The following general safety precautions must be
observed during all phases of operation, service, and
repair of this product. Failure to comply with these
precautions or with specific warnings elsewhere in this
manual violates safety standards of design, manufacture,
and intended use of the product. M/A-COM assumes no
liability for the customer’s failure to comply with these
standards.
GROUND THE EQUIPMENT
To minimize shock hazard, the station equipment
cabinet must be connected to an electrical ground. The
equipment supplied is equipped with a three-conductor
AC power cord. The power cord must be plugged into an
approved three-contact electrical outlet with the
grounding wire firmly connected to an electrical ground
(safety ground) at the power outlet. The power cord meets
International Electrotechnical Commission (IEC) safety
standards.
REPLACEMENT OF PLUG-IN CIRCUIT
MODULES
Component or module replacement and internal
adjustments must be made by qualified maintenance
technicians.
CAUTION
Do Not replace components or modules with
power applied.
ELECTROSTATIC DISCHARGE SENSITIVE COMPONENTS
This station contains CMOS and other circuit
components, which may be damaged by electrostatic
discharge. Proper precaution must be taken when
handling circuit modules. As a minimum, grounded wrist
straps should be used at all times when handling circuit
modules.
9
LBI-38636S
DO NOT SUBSTITUTE PARTS OR
MODIFY PRODUCT
Because of the danger of introducing additional
hazards, do not install substitute parts or perform any
unauthorized modifications to the product.
INTRODUCTION
This manual describes the installation and
connections for a typical MASTR III station combination.
Information provided includes suggested locations and
installation of equipment and hardware, interconnection
and assembly diagrams, alignment instructions, and
troubleshooting suggestions.
The MASTR III cabinet normally includes the
Transmitter/Receiver Shelf, the Transmitter Power
Amplifier, and a Station Power Supply. The assemblies
are mounted in a 37-inch cabinet. Optional 69- inch or
two stacked 37-inch cabinets are available.
CABINET
The system is contained in a 37-inch cabinet with
improved ventilation for greater reliability. The cabinet
can also house optional equipment such as a Duplexer,
Charger, Gell Cell batteries, or Auxiliary Receiver.
STATION POWER SUPPLY
The Station Power Supply provides all necessary
power to run the station. It provides 13.2 volts at 33 amps
to the station from an AC source. The source voltage
depends on the particular area and power sources
available. The power supply is normally mounted beneath
the T/R Shelf.
UNPACKING EQUIPMENT
Unpack the station and carefully inspect each item. If
any damage has occurred to the equipment during
shipment, immediately file a claim with the freight
carrier. AC power adequate to meet system requirements,
environmental control, and digital or voice grade phone
lines must be available at the site prior to installation.
SITE PREPARATION AND
INSTALLATION
CABINET INSTALLATION
The MASTR III station cabinet is designed for
servicing from the front. However, the system may also
be serviced from the rear when adequate space is
available. The cabinet should be mounted on a level, solid
surface.
If rear servicing is desired, cabinets should be setup
with a minimum of 24-inches of clearance in the rear and
between cabinets or wall to permit ventilation and room
for the service-man to move between and behind the
cabinets.
If space is at a premium or if servicing is to be made
from the front only, then cabinets should be setup with a
minimum of 18-inches of clearance in the rear and 12inches between cabinets to permit ventilation. However,
access to the rear of the cabinets may still be necessary in
order to install or repair antenna or power cables.
Single and double stacked 37-inch cabinets must be
securely anchored to the floor according to the footprint
shown in Figure 2 and following single or double stacked
installation instructions.
TRANSMITTER/RECEIVER SHELF
The MASTR III Transmitter/Receiver (T/R) Shelf
contains the station control electronics for dc/tone remote,
re-mote/repeater, or repeater only applications. The
station control electronics consists of a Backplane board,
Power Module, System Module, and an Interface Board.
The back-plane also connects the RF Section which
consists of the Receiver Synthesizer Module, First IF
Module, Second IF Module, and the Transmit Synthesizer
Module.
TRANSMITTER POWER AMPLIFIER
The Transmitter Power Amplifier is mounted directly
behind the T/R Shelf. Cabling from the output of Power
Amplifier will depend on the system configuration.
10
Single 37-inch Cabinet Installation
The station provides for front and rear door servicing
or front door only servicing in tight space situations. The
front and rear of the station must be kept clear of
obstructions so that the serviceman can easily remove the
front and rear doors for servicing. Also, the front and rear
air vent louvers and rear cable outlets must be free of
obstructions.
Figure 2 - 37 Inch Mounting Footprint
LBI-38636S
serviceman can easily remove the front and rear doors for
servicing. Also, the front and rear air louvers and rear
cable outlets must be free of obstructions. Leave a
minimum of 12-inches of space on each side of the
cabinets to avoid obstructing the louver air vents. With
the bottom cabinet in position, secure it to the floor as
shown in Figure 2 with 1/2-inch bolts and anchors.
Remove the four plastic plugs in the top surface of the
bottom cabinet (by squeezing the plastic retaining barbs
together from the inside of the cabinet and pushing the
plug up and out).
Position the top cabinet on the bottom cabinet. Align
the fixing holes and bolt the cabinets securely together
using 1/2 inch bolts, washers, and locknuts (supplied in
hardware kit 344A3450G7) as shown in Figure 4.
It will be necessary to remove the front and rear
covers and some internal components to allow access to
the top and bottom securing holes.
Figure 3 - 37-Inch Cabinet
Using the four holes are provided in the bottom
surface of the cabinet, the cabinet must be securely bolted
to the floor with 1/2" bolts and anchors as shown in
Figures 2 and 3. It will be necessary to remove the front
and rear door covers and some internal components to
allow access to the bottom securing holes.
Double Stacked 37-inch Cabinet installation
For limited floor space situations, two 37-inch
MASTR III cabinets may be stacked one upon the other.
This requires that the bottom cabinet be securely bolted to
the floor surface and the top cabinet securely bolted to the
top surface of the bottom cabinet, as shown in Figure 4.
Ensure first that the floor is strong enough to support
the weight of the two cabinet configuration and that
adequate ceiling height is available. Ensure the front and
rear, of the station cabinets are clear of obstructions so
Figure 4 - Stacked 37-Inch Cabinets
11
LBI-38636S
ELECTRICAL CONNECTIONS
AC Power
The station will be received with the power cord
bundled and stored in the bottom of the cabinet. Remove
the twist tie from the AC power cord, unravel and feed the
cord through one of the rear cable holes. It may be helpful
to remove the grommet from the hole before passing the
cord through and reinstalling it afterwards.
A separate 15 to 20 Ampere, 120 Vac, 60 Hertz
electrical circuit should be provided for the station. A 120
volt grounded AC outlet for the station should be located
within six feet of the lower rear of the cabinet. The power
cord for the 120 Vac Power Supply comes with a
grounded 120 Vac molded plug attached. Check the
electrical code to ensure the power outlet complies with
local ordinances.
If a 240 Vac, 60 Hz source is used for the station, an
external step-down transformer (similar to 19C307148P1)
must be used.
For 230 Vac, 50 Hz applications, the station power
supply is equipped with a power cord, less connector, to
permit connection to an acceptable electric circuit. A plug
meeting local electrical codes must be supplied by the
customer. Make sure the station power supply is
connected to an outlet having the same configuration as
the plug. No adapters should be used in this configuration.
The equipment should be connected to a good earth
ground using a ground wire of adequate size. A ground
stud is provided for a separate cabinet ground. Use No. 14
or larger wire (depending on local ordinances and system
requirements) for connecting the cabinet to a good
building ground. After the ground lead from the power
cable is connected to the building ground, check for
continuity between building ground and the cabinet.
Microphone
The local microphone or utility handset may be
attached to the station through the MIC port on the front
of the T/R Shelf (Figure 6), the connections are shown in
Figure 5.
Antenna
The antenna cable may be routed through the top rear
or bottom rear of the cabinet directly to the appropriate
connector within the station, depending upon the
configuration.
TELEPHONE LINE CHARACTERISTICS
Telephone Lines
The type of telephone lines required for the
installation will depend on how the station is controlled
and if it is being used for simplex or duplex operation.
Generally, both 4-wire Audio and E & M Signaling
options are used to interface between the radio and carrier
systems. However, 2-wire Audio can be used in the twoway radio portion of the control system if hybrids are
installed to provide transition between the 2-wire and 4wire connections. Usually the E & M Signaling is
separated from the audio (separate line) in both 2-wire
and 4-wire installations.
Figure 5 - Microphone Connections
Types Of Voice Grade Lines
Telephone lines are normally obtained from a
communications common carrier ("telephone company"
for our purposes here). When a voice grade (as contrasted
to a "data line") telephone line is requested, there is no
way of knowing just what type of line will be received
from the phone company.
In addition, the telephone company may supply one
type of line first, and later change it to another type
without any notification to the user. One of the following
types of telephone line can be expected:
1. Wire lines with no amplifiers
2. Wire lines with amplifiers added to compensate
for line loss
3. Facilities derived from carrier (multiplex)
These lines have different operating characteristics,
and each must be treated differently. In large systems, all
three types of lines can be provided. In long haul
applications, a system can consist of two or three of these
types of lines in tandem (tied together end-to-end).
The first type is WIRE LINE WITH NOAMPLIFIERS. These are the same lines that have been
used for years to control dc systems. These are the easiest
to work with since they include no problem-causing
electronic equipment. These lines are normally found in
12
LBI-38636S
less populated areas where the phone company has not yet
switched to carrier systems. These lines have a fixed
amount of loss, which varies with frequency, temperature,
from deterioration of splices, and from moisture getting
into the cables. When these cables get old, the phone
company sometimes applies DC current to improve the
joints and lower the line loss. In this case, the line is not
usable for DC control.
Normally, a +10 dBm test tone can be applied to
these lines. These lines do not normally include any type
of voice limiters.
The second type of line is a WIRE LINE WITHAMPLIFIERS. These lines are normally supplied when
the loss of available lines is too high. An amplifier or
several amplifiers are added to the line to make up for the
loss.
One commonly used amplifier is the E-6 repeater.
This amplifier will pass DC current and they have been
used on DC lines for years. These amplifiers include
limiters, which start limiting at somewhere around 0 dBm
input to the amplifier. The limiters do not cause any real
problems on DC systems since only the voice peaks are
clipped. However, special care must be used when
applying them to tone remote control systems.
Each amplifier can be adjusted for up to 12 dB of
gain. If the loss is more than 12 dB, one or more
amplifiers may be added. The amplifier(s) can be placed
at any point in the line.
The third type of telephone line is a Derived Facility
using carrier equipment. Since this is the most
complicated, more care is required when connecting radio
equipment. This type of line will be available more often
in the future.
The telephone company supplies two wires at each
end of the circuit. Each two-wire end goes to some point
in the circuit where it is converted to a four-wire circuit
and then connected to the carrier equipment. A four-wire
circuit can be ordered if that is what is required. At the
other end, it is taken out of the carrier equipment and
converted back to the two-wire circuit. The carrier
equipment has a transmit path and a receive path. The
gain is adjustable each way.
Figure 6 - T/R Shelf Connections
13
LBI-38636S
The telephone company wants to see a maximum
three-second level of -13 dBm at the carrier equipment as
measured on a modified Western Electric 3-type Noise
Measuring Set. The telephone equipment will limit the
audio if the signal is above -13 dBm at the carrier input.
This does not mean that the maximum that can be applied
into the two-wire end is -13 dBm. If the radio equipment
is a good distance from the carrier equipment, there will
be some line loss. If the loss is 5 dB, for instance, then -8
dBm could be applied into the two-wire end. Therefore,
the telephone company will have to be asked in each case
what level is allowed to be applied at the two-wire end.
If the telephone company checks and finds that too
much audio is being applied into the carrier equipment,
they will put a pad into the circuit to cut the audio down.
When the phone company is asked what levels can be
applied to the line, they will either provide a level in
Volume Units (VU) or test tone. VU is average voice,
which is generally considered to be 10 dB below test tone.
Test tone is a 1000 or 1004 Hz tone used to line up the
circuit. Test tone is normally given in dBm. If the radio
installer isn’t careful, he and the phone company will be
talking 10 dB apart. If the phone company says the limit
is 0 VU, use +10 dBm for the line-up.
The two wire ends of these lines are normally
designed to work with a 600 ohm impedance in and out.
The transmit and receive carrier equipment gains are set
up for 600 ohm terminations. If the line to the carrier
equipment is fairly long, the impedance at which at the
two-wire end is not very critical.
If the two-wire end is close to the carrier equipment,
however, then the impedance is critical. If the impedance
is not 600 ohms, it can cause the gain of the carrier
equipment to go up or down. In some cases, feedBack
(oscillations) from the receive path to the transmit path
will be present. A common problem that causes
oscillations in the carrier equipment is gain change,
whether from misalignment or other reasons.
American Telephone and Telegraph Company has
published a reference for Voice Grade Lines entitled,
"Private Line Interconnections, Voice Applications"
(Publication Number 43201). It covers several types of
private line interfaces. There is no publication that covers
radio control alone. However, there are several
parameters provided in the publication that are important
to note.
The 1000 Hz loss design objective is 0 to 10 dB. If
the loss is not specified, there will be a loss of 10 dB at
1000 Hz in most cases. The phone company allows itself
a SHORT-TERM fluctuation of 3 dB and a LONG-TERM variation of 4 dB. If a 10 dB loss line at 1000 Hz
is specified, up to 14 dB loss can be expected, and the
phone company would still be within their design limits.
The loss between 500 and 2500 Hz can be +2 dB and
-8 dB relative to 1000 Hz loss. Note that the phone man
may refer to this as -2 and +8 in the telephone company
way of talking. The loss between 300 and 3000 Hz can be
+3 dB to -12 dB relative to the 1000 Hz loss. This says
that if there is a line with 10 dB of loss at 1000 Hz, a loss
of as much as 18 dB at 2500 Hz, and 22 dB of loss at
3000 Hz can be expected. A loss 4 dB of long-term
variation should be added to this.
Noise on this type of line is measured at each end
with a Western Electric 3-type Noise Meter. The
allowable level of a line from 0 to 50 miles is 31 dBrnC,
and for a line from 51 to 100 miles is 34 dBrnC. If this
type meter is not available, an AC- VTVM can be used. If
there is a noise reading of -50 dBm or less, generally this
is considered an acceptable circuit.
Tone Remote Control Systems
In contrast with DC systems, where audio level
setting is not as critical, it is important that levels in tone
applications be set properly. Failure to do so results in the
control function not working properly. For example, after
the installation when the user has gained a little
experience, the user may find that they are not always
picking up the function selected. A little extra time spent
at the installation will save many problems of this type
later.
This equipment is designed so that the tone sequence
consists of either two or three parts. The first part is the
"Secur-it" tone (2175 Hz) which is sent at the highest
level for approximately 125 milliseconds. This is
followed by the "Function" tone which is sent at a level
10 dB lower for approximately 40 ms. In the case of a
transmit function, the "Function" tone is followed by
2175 Hz "Hold" tone at a level 30 dB down from the
"Secur-it" tone burst (therefore, it is 20 dB down from the
"Function" tone burst). This tone continues for the
duration of the transmit function. The average voice (0
VU) is sent at the same level as the "Function" tone,
therefore, the test tone for the voice is sent at the same
level as the "Secur-it" tone.
The "Secur-it" tone must arrive at the base station at
no less than -20 dBm. The transmit "Hold" tone must
arrive at the base station at no less than -50 dBm. The test
tone for the voice must arrive at the base station at no less
than -20 dBm. Therefore, the limits of system operation
are usually established by only three things:
1. The maximum level at 2175 Hz that the phone
company will allow to be sent from the most
distant point in the system. Normally this will
not be higher than 0 dBm. In some cases it can
even be less, or on rare occasions it can be +5 or
+10 dBm.
14
LBI-38636S
2. The loss of the circuit at 2175 Hz. Do not forget
the long-term variation of up to 4 dB more.
3. The requirement that the "Secur-it" burst must
arrive at the base station at no less than -20 dBm.
Normally, most systems will not crowd these limits.
However, if the result is a few dB short, consider adding
C-1 conditioning (at an added cost). Resist the natural
desire to just turn up the tone sending level as this will
cause improper system operation.
Increasing the level will cause the "Secur-it" tone
burst to go into limiting in the phone company equipment.
The limited tone causes the "Secur-it" tone filter in the
base station to ring. This will result in picking up or
dropping out functions, which were not selected. NEVER
allow the "Se-cur-it" tone to be in limiting.
There is an easy way to check and see if the "Secur-it" tone is in limiting. With the phone lines connected to
the equipment at both ends connect an AC voltmeter
across the phone line at the base station. Arrange to send a
burst of "Secur-it" tone long enough to measure the
incoming level on the AC voltmeter. Then arrange to send
a burst of 1950 Hz "Function" tone long enough to
measure the incoming level on the AC voltmeter. If the
1950 Hz tone does not arrive 10 dB (1 dB) less than the
"Secur-it" tone, then the "Secur-it" tone is in limiting. It
will become necessary to lower the sending level at the
remote controller until it is below limiting.
If the audio is high enough to cause the telephone
equipment to go into limiting, it will cause amplitude
distortion. On a high loss line the amplitude distortion
will cause the "Hold" tone (2175 Hz) to vary and the
transmitter to drop out.
On remote systems using tone control, care must be
used when connecting two telephone lines in tandem. For
example, for a base station and two remotes, a phone line
is ordered to connect the station to the first remote, and a
second line to connect the second remote to the first
remote. The loss of each line is now added together and
the tones from the second remote can not operate the base
station. The installer can either specify a low loss on each
line, or run each line directly to the base station.
A check with the phone company can determine
which approach is the least expensive over a period of
time; i. e., an analysis of non-recurring costs versus
recurring costs over the expected length of time the circuit
will be used.
selector 3 dB lower than the 1000 Hz test tone level. Most
telephone lines have a frequency response which
attenuates the 1950 Hz tone with respect to a 1000 Hz test
tone, therefore care should be taken to ensure that the
correct levels are received at the voting selector.
If the telephone company will not allow a continuous
tone as high as -8 dBm to be sent, then a lower loss circuit
should be requested or C-1 conditioning added.
When ordering phone lines for a voting system, if
possible, all lines should be of the same type. Different
telephone line responses will cause the voter to prefer one
signal over others.
It is improper system design to have the received
signal selection biased by a "poorer" telephone circuit.
Many telephone companies will add pads to build out the
lines. If this is considered when the lines are ordered, it
should not be difficult to build all of the lines out to have
the same frequency response.
Ordering Voice Grade Telephone Lines
If a standard voice grade circuit is ordered, and the loss is
not specified, the following will normally result:
1. Loss at 1000 Hz will be 5 to 10 dB; normally 10
dB
2. Long-term variation 4 dB
3. Amplitude distortion (frequency response)
Referenced to 1000 Hz; + = more loss 300 to
3000 Hz: -3 to +12 dB 500 to 2500 Hz: -2 to + 8
dB
4. Noise: 31 dBrnC maximum
5. Frequency translation error: 5 Hz
6. Normal impedance: 600 ohms
7. Maximum permitted signal into the line: -6 dBm
to -13 dBm in-band three second average (the
level arriving at the carrier equipment cannot be
more than -13 dBm).
By adding C-1 conditioning, the loss changes to:
Amplitude distortion (frequency response) Referenced to
1000 Hz; higher frequency = more loss 300 to 2700 Hz: 2 to +6 dB 1000 to 2400 Hz: -1 to +3 dB
One added advantage to C-1 conditioning is that the
voice quality will be improved by boosting the high
frequency components.
Voting System Considerations
A voting system uses a continuous 1950 Hz tone on
the telephone line when the receiver is squelched. This
voting tone is normally sent from the station to the voting
15
LBI-38636S
Telephone Company Ordering Information
When ordering a telephone line, the following must
be considered:
1. Type of circuit:
Voice grade, 2-wire termination, for radio
control, and tone remote system - send/
receive; voting system - receive only.
2. DC continuity not required
3. Impedance: 600 ohms 20%
4. Line Loss:
Tone remote system:
Sends 2175 Hz tone for 125 milliseconds, and
it must arrive at the base station at no less than
-20 dBm including long-term variation.
Average voice is 10 dB below the 2175 Hz
tone burst.
Voting system:
Sends a continuous 1950 Hz tone when the
receiver is squelched, and it must arrive at the
voting selector at no less than -30 dBm
including the long-term variation.
5. C-1 conditioning if necessary. (If two phone
lines are to be tied in tandem, it is usually proper
to specify C-1 conditioning.)
6. If more than one phone line is to be used, a block
diagram showing locations and type of
equipment to be used should be provided the
telephone company.
TELEPHONE LINE INSTALLATION
DC Remote Installation
Two-Wire Operation
For two-wire operation, connect the pair to TB101-3
and -4. If the remote control unit at the other end is an
RCN 1000, use J3-3 (red) and -4 (green). Refer to
Methods 1 and 2 in Table 1 and associated illustration for
examples (Figures 8 & 9). Jumpers should be placed on
P104-1 to P104-2 and P105-1 to P105-2 on the Interface
Board. Figures 15 & 17 shows the location of Interface
Board connectors and jumpers.
NOTE
Polarity must be maintained, if the metallic
control pair is being used for DC control.
Four-Wire Operation
For examples, refer to Methods 3 and 4 in Table 1,
and the associated illustrations showing the different
methods (Figures 10 & 11). Jumpers should be installed
on P104-2 to P104-3 and P105-2 to P105-3 on the
Interface Board.
E & M Signaling
E & M lead signaling systems derive their name from
certain historical designations of the signaling leads on
circuit drawings. An "M" lead is associated with the
transMit function or Mouth, while the "E" lead is
associated with the recEive function or Ear. In two-way
radio systems with remote control, E & M Signaling can
be the only type of control offered by the available carrier
circuits.
Generally, both 4-Wire Audio and E & M Signaling
options are used to interface between the radio and carrier
systems. However, 2-Wire Audio can be used in the twoway radio portion of the control system if hybrids are
installed to provide transition between the 2-Wire and 4Wire connections. Usually the E & M Signaling is
separated from the audio (separate line) in both 2-Wire
and 4-Wire installations.
Figure 7 illustrates a typical interface between a twoway radio system and a multiplex/microwave system. The
Remote Control Console and Base Station are equipped
with the E & M Signaling Option and the 4-Wire Audio
Option. The console provides a regulated -48 Vdc output
(or -24 Vdc with minor modifications) to the "M" lead
when the TRANSMIT switch is pressed. This -48 Vdc
activates a tone encoder (usually 3825 Hz) in the
multiplex rack. The tone encoder modulates the carrier
frequency, which is transmitted over the microwave link.
At the station end of the microwave link, the signal is
demodulated and the 3825 Hz tone operates a tone
decoder in the multiplex rack. The output of the decoder
results in a contact closure, which applies +48 Vdc (or
+24 Vdc) to the control shelf. This voltage should be
connected between TB101-1 and TB101-6 on the
Interface board. Jumpers on P104 and P105 of the
Interface Board should also be removed. If +48 Vdc is
being used, resistors R116 and R118 on the Interface
Board should also be removed.
When the system is configured in this manner,
approximately +8 milliamperes flows through the DC
control decode circuitry on the backplane. This will cause
the T/R Shelf to decode a +6mA control current to key the
transmitter and route line audio to the transmitter.
16
LBI-38636S
Tone Remote Installation
Jumpers P104 and P105 located on the Interface
Board are not required and should be removed. Refer to
the sections on TELEPHONE LINE
CHARACTERISTICS and LEVEL ADJUSTMENTS for
additional installation information. Line connections are
made to TB101 or J101 on the T/R Shelf’s Interface
Board. TB101 and J101 are connected together and each
has the same pin out.
Two Wire Tone Remote
When the control shelf is used with a two wire tone
re-mote/console, the remote control pair should be
connected to TB101-3 and TB101-4.
Four Wire Tone Remote
When the control shelf is used with a four wire tone
re-mote/console, the remote control transmit pair (which
modulates the transmitter) should be connected to TB1012 and -5. The remote control receive pair (which listens to
the receiver) should be connected to TB101-3 and TB101-
4.
Connections
Telephone line connections may be made on the
terminal block (TB101) or with an RJ11 connector to
J101. The telephone line cable may be routed through the
top rear or bottom rear of the cabinet (Assembly
Diagram). The telephone line connections are shown in
Figure 12.
17
LBI-38636S
Table 1 - Wire Line Installation Methods
METHODDESCRIPTIONPROCEDURE
1Single metallic pair (the
control currents are simplexed
to line, a two wire cable is
required).
2Single metallic pair (the
control currents are simplexed
line to earth ground, a two wire
cable is required).
3One voice grade circuit for bi-
directional audio and the other
a metallic pair of control
voltages.
4Single metallic pair for
transmit audio and control
Currents. Single voice grade
circuit for receive audio. A
four wire line is required.
a. Connect the metallic pair to TB101-3
and -4.
b. Jumper P105-1 to P105-2, and P104-
1 to P104-2 on the Interface Board.
a. Connect the metallic pair to TB101-3
and -4.
b. Jumper P105-1 to P105-2 to P104-1
on the Interface Board and connect
TB101-6 to earth ground.
a. Connect audio pair to TB101-3 and
TB101-4.
b. Remove jumpers from P104 and
P105 on Interface Board.
c. Connect control metallic pair to
TB101-1 and -6 on Interface Board.
a. Connect the transmit metallic pair to
TB101-2 and -5 on Interface Board.
b. Connect a jumper from P104-3 to
P104-2, and P105-3 to P105-2.
c. Connect the remote receive pair to
TB101-3 and -4
ADVANTAGES OR
DISADVANTAGES
Economical: Dependable where earth ground
currents may be large or good earth grounds cannot
be obtained. The keying clicks will be heard on
parallel remotes.
Economical: Minimizes keying clicks in paralleled
remotes but large ground currents may result in
interference with control function if located near
sub-stations.
Provides excellent performance by eliminating
keying clicks and providing no path for ground
loop current, but requires two pair.
Provides full duplex operation in which the remote
can operate in receive and transmit simultaneously.
But, requires two pair.
manufactured. Making your own requires only
three wire connections (Figure 13).
DB9DB25
Figure 12 - Telephone Line Connections
STATION SETUP
The MASTR III station comes pre-programmed and
ready to install, the only adjustments needed are the
required Line Output Level, the Line Input Level
necessary to produce Standard Deviation, and the Line
Cancellation for 2-wire Tone Remote Orientation. These
adjustments can be made using the PC Programming
option TQ-3353, or Utility PC software TQ-0619 with the
Utility Handset SPK9024.
SETUP PROCEDURE
Use the following procedures when setting up the
station using a Personal Computer (PC). If the Utility
Handset is plugged into the MIC connector, it must be
removed prior to resetting the system and using the PC
Programming software. Levels may be adjusted using the
MASTRUTL program supplied with the PC
Programming package. A RESET (on the Power Module)
should be initiated before programming starts.
1. Ensure proper connections are made to receive
and transmit antenna(s). See interconnect
diagram.
2. Plug the power cord from the base station into a
120 Vac, 60 Hz power source.
NOTE
If a 230 volt, 50 Hz source is used, connect the
locally required plug.
3. Connect the PC computer’s serial COM port and
the DATA PORT on the front of the T/R Shelf
using the TQ-3356 Interconnect cable
(19B801348P2).
If the computer has a 25-pin connector instead of
a 9-pin connector, an adapter must be installed.
The adapter may be either purchased or locally
Pin 2
Pin 3
Pin 5
Pin 2
Pin 3
Pin 7
Figure 13 - 3-Wire Adapter
4. If the system requires control by a remote unit,
the following interconnection must be made.
Connect the wires from the remote unit to the
six-pin terminal block (TB101). Use the
following information when making
connections:
TB101, Pins 3,4 - Line Input/Output for 2-wire
DC and Tone control.
or
Line Output for 4-wire DC and Tone control.
TB101, Pins 2,5 - Line Input for 4-wire DC and
Tone control.
TB101, Pins 1,6 - Line Inputs for E & M
signaling, DC Remote Control.
Table 2 - DC Remote Control
P104P105COMMENTS
2-wire1 to 21 to 2Both jumpers back
4-wire2 to 32 to 3Both jumpers forward
NOTE
P104, Pin 1 and P105, Pin 1 are on the far side
of the connector if you are facing the front of the
base station. Refer to Figures 16 thru 18.
5. The SQUELCH and VOLUME adjustments
should be made for proper operation. Unsquelch
the receiver by turning the SQUELCH
adjustment counter-clockwise. (If your base
station has Channel Guard, also activate the CG
switch.) Verify that unsquelched noise is going
to the speaker by increasing the VOLUME
(clockwise). Adjust the SQUELCH pot for
critical squelch (squelch just closes).
6. Following the initial setup, the MIC port may be
TO ENSURE THAT YOUR EXPOSURE TO RF ELECTROMAGNETIC ENERGY IS
WITHIN THE FCC ALLOWABLE LIMITS FOR OCCUPATIONAL USE, ALWAYS
ADHERE TO THE FOLLOWING GUIDELINES:
CAUTION
DO NOT operate the basestation with an antenna that would cause an ERP in excess of that
allowable by the FCC.
22
Figure 14 - Antenna Installation
LBI-38636S
ALIGNMENT PROCEDURE
Alignment of the MASTR III base station was
performed prior to shipment. The factory assumed the
following characteristics:
1. There is no loss or gain for repeated audio
deviation.
2. If a remote exists, it is connected to the base
station through a telephone line with 10 dB of
loss.
3. The base station drives the line output at -10
dBm with nominal receive deviation.
The base station should deliver –10 dBm to the line
with a signal applied with 3kHz deviation. A –10 dBm
audio signal applied to the Station Line In should result in
transmitter deviation of 3 kHz.
These values may be altered by following one of the
alignment procedures as provided. For minor adjustments
you may want to adjust only one or two digital
potentiometers or leave the setting as set. In any case, it is
important to carefully examine the ALIGNMENT
DIAGRAM (Figure 15) which follows:
NOTE
It is a good idea to record the potentiometer
settings on paper, until you’re familiar with all
the digital potentiometer setting tools.
Test Equipment Required
The following test equipment is required to align the
MASTR III base station:
•
Audio Oscillator
•
AC Voltmeter
•
RF Signal Generator
•
Deviation Monitor
•
Handset or PC Computer (with diagnostic utility
TQ-0619)
Procedure
Terminate both the Line Input (T101-3,4) and Line
Output (T101-2,5) with a 600 ohm load. This step must be
completed for all parts of the alignment to ensure proper
level setting (Table 4).
1. Line In
•
Set Line Input digital potentiometer (Pot) LI
to 0.
Preset the following digital potentiometer
values:
Repeater Gain (RG) 1023
Compressor Threshold (CT) 5000
Compressor Gain (CP) 1023
DSP Line In (DLI) 100
•
Apply a 1000 Hz tone, at the maximum
system audio level, across the 600 ohm load
termination to the Line Input.
This level is the secur-it level, and is
usually 0 dBm across 600 ohms, (775
mVrms). The "maximum system audio
level" is the absolute highest signal level
that will be present on the line and must be
10 dB higher than average voice audio level.
•
Execute a REMOTE PTT on the System
Module by flipping the REM PTT switch
on the front panel.
•
Adjust the TX Pot to maximum system
deviation (Table 6).
If not a remote station, set the DSP Line In
DLI Pot to 0.
•
If a remote station, do the following:
Apply a 1 kHz tone at the average voice
audio level across 600 ohms to the line
input. (This level is the function tone level,
and is usually -10 dBm across 600 ohms, or
245 mVrms. This level MUST be 10 dBm
below the "maximum system audio level"
even if your actual secur-it tone and function
tone are at the same level.)
•
Execute a REMOTE PTT on the System
Module by flipping the REM PTT switch on
the front panel.
•
Adjust the DSP Line In DLI Pot for 60% of
maximum system deviation if operating with
compression. (Table 9).
If no compression is desired, set DLI pot to
60% of maximum system deviation (Table
8).
•
If compression is desired, adjust the DLI Pot
for 60% of maximum system deviation
(Table 8).
•
Increase the audio input level to the
maximum system audio level. (This level is
the secur-it level, and is usually 0 dBm
across 600 ohms, or 775 mVrms. This level
must be 10 dB higher than the average voice
audio level.)
•
Adjust the Compressor Threshold CT pot for
desired compression deviation level (Table
If not a remote station, set the Line Out LO
Pot to 0.
•
If the station is a remote station, apply an
"on Channel" RF signal modulated with a 1
kHz tone at 60% of system deviation to the
receiver. (60% of system deviation is
usually 3 kHz.)
•
Adjust the Line Out LO Pot for the desired
output level as measured across 600 ohms.
The line out level must never rise above 7
dBm, as measured across 600 ohms.
•
Re-enable Channel Guard decode.
7. DSP cancellation
•
If the station is a 4 wire station, set the DSP
Line Cancellation DC Pot to 0. If the station
is 2 wire, do the following:
•
Apply a RF signal to the receiver modulated
by a 1000 Hz tone at 60% of rated system
deviation and monitor the remote’s Line
Out. The level of the Line Out should be
between +7 dBm and -19 dBm.
•
Put the System module on an extender card
and meter TP1 on the DSP board. On
stations with Group 6 or later T/R shelf, the
TPI signal can be observed at J5-28A on the
backplane. An oscilloscope may be more
helpful than an analog meter. Adjust the
DSP Cancellation DC Pot for a null at TP1.
8. Tone Remote timing
You must have PC Programmer for base stations,
version 9.0 or later, to affect the timing of Tone
Remote Decoding.
If you have two wire tone remote, do the
following:
•
In the timing screen of the option screen,
ENABLE Timed Tone Remote. The
default values of 100ms and 150ms will
appear for Secur-it minimum time and
Secur-it maximum time. Change these
values as your system requires.
25
LBI-38636S
AUDIO ROUTING AND
ADJUSTMENTS
Once the T/R Shelf is installed and programmed
properly, audio level adjustments may be made for proper
system operation. Level adjustments must be made with a
handset (LBI-38599). THERE ARE NO MANUAL
MECHANICAL ADJUSTMENTS IN THE T/R SHELF.
Integrated circuits (IC's) U35 and U36 on the System
Board are dual electronic potentiometers that are
controlled by the microprocessor. IC U15 on the DSP
Board is also a dual electronic potentiometer controlled
by the DSP.
TX AUDIO LEVEL ADJUSTMENT
U36-0 is used to set the transmitter deviation by
adjusting the TX AUDIO output level. Analog switch
U15 selects, which audio source is routed to the
transmitter. Possible sources are LOCAL MIC, REPEAT
AUDIO, DSP LINE/TX AUDIO, DSP TX AUDIO,
EXTERNAL High Speed Data, LINE IN AUDIO, OPEN
(used for Morse code ID), and GROUND (used for no
transmission. A battery alarm tone may also be summed
in with whichever source is selected with the exception of
GROUND.
Normally, LOCAL MIC, REPEAT AUDIO, DSP TX
AUDIO, LINE IN AUDIO, OPEN, or GROUND will be
selected. The gains in the circuitry are set such that 100
mVrms in the MIC HI or 1 Vrms (3 kHz deviation) in on
VOL/SQ HI (REPEAT AUDIO) will produce the same
out-put level on TX AUDIO HI. The gains for Morse
code ID and battery alarm are also designed to provide the
proper levels without adjustments. The TX AUDIO HI
output level should be adjusted with a 100 mVrms, 1 kHz
signal in on MIC HI or a 1 Vrms, 1 kHz signal in on
VOL/SQ HI.
26
LBI-38636S
Figure 16 - T/R Shelf Interface Board
27
LBI-38636S
28
Figure 17 - T/R Shelf Interface Board (Rev. A)
LBI-38636S
Figure 18 - T/R Shelf Interface Board ( Rev. C)
29
LBI-38636N
REMOTE CONTROLLER TO STATION
CONTROL PANEL ADJUSTMENTS
Although audio levels should be considered on a
system basis, it is appropriate to set the levels of the
remote controller and the control station panel by
themselves with reference to the levels required by the
transmission path and then connect the controller(s) and
station to the path. The transmission path, if it is more
than just a simple twisted pair, is usually set up with a
"test tone". The "average voice" level is defined as being
a certain number of decibels below the test tone. The test
tone is normally the maximum level that can be sent
through the path without clipping or being regulated.
Although there is no definite agreement on the difference
between the test tone and average voice levels, 10 dB is
an appropriate level.
In order to align the RCN 1000 Remote Controller
and T/R Shelf properly, it will be necessary to have some
information on the transmission path. This will help to
determine the levels at each end required by the system.
Specifications needed include:
1. Loss at 1 kHz
2. Test tone or maximum level
3. Average voice level (if defined)
4. Loss at 2175 Hz (if tone remote)
The DSP Board performs tone detection in a tone
remote installation. The "Secur-it" tone Decoder on this
board has a dynamic range of approximately 9 dB. The
system must be set up such that the "Secur-it" tones from
all remotes in the system arrive at the T/R Shelf within
this 9 dB window.
LINE OUT LEVEL ADJUSTMENT
U36-1 is used to set the line out level. Analog switch
U14 selects which audio source is routed to the line.
Possible sources are LOCAL MIC, VOL/SQ, auxiliary
receiver audio, auxiliary receiver audio summed with
VOL/SQ (simultaneous monitor), DSP LINE/TX
AUDIO, MODEM LINE data, OPEN (used for battery
alarm), GROUND (used for no transmission, and LINE
IN audio (used for four wire loop around). A battery
alarm tone and/or VG ALERT tone may also be summed
in with whichever source is selected with the exception of
GROUND. Typically LOCAL MIC, VOL/SQ, DSP
LINE/TX AUDIO, OPEN, GROUND, or LINE IN
AUDIO will be selected.
The gains in the circuitry are set such that 100
mVrms in on MIC HI or 1 Vrms (3 kHz deviation) in on
VOL/SQ HI (REPEAT AUDIO) will produce the same
line output level. The gains for VG ALERT tone and
battery alarm are also designed to provide the proper
levels without adjustments. The LINE output level should
be adjusted with a 100 mVrms, 1 kHz signal in on MIC
HI or a 1 Vrms, 1 kHz signal in on VOL/SQ HI.
LINE IN LEVEL ADJUSTMENT
Typically, the TX AUDIO and LINE OUT levels
should be adjusted prior to adjusting the LINE IN level.
DSP TX AUDIO and DSP LINE/TX AUDIO are
typically line audio or VOL/SQ HI audio that has been
processed by the DSP Board.
A DSP Board is always present, this DSP processed
line in audio will normally be selected by analog switches
U14 (DSP LINE/TX AUDIO to line out) and U15 (DSP
TX AUDIO to transmit audio) on the System Module
when line in audio is selected. The level for DSP TX
AUDIO and DSP LINE/TX AUDIO must be adjusted on
the DSP Board.
DSP LEVEL ADJUSTMENTS
The LINE IN level into the DSP must be adjusted
using U15-0 (DSP line cancellation level) and U15-1
(DSP line input level) located on the DSP Board. If twowire audio is used then both electronic pots must be
adjusted. If four-wire audio is used then only U15-1 needs
to be adjusted.
For two wire installations the DSP line cancellation
level pot (U15-0) is used to remove what the T/R Shelf is
transmitting on the line. While the T/R Shelf is
transmitting received audio down the line, the line
cancellation pot should be adjusted to minimize the signal
level at TP1 on the DSP Board. This leaves only what is
received from the remote. This signal is then level
adjusted using the DSP line input level adjust pot (U15-1)
and input into the DSP.
NOTE
System modules 19D902590G2, G3, & G4 must
have their cover removed to gain access to TP1 on
the DSP board. Modules G6 & G7 have TP1
extended to the board edge connector and may be
metered on the MASTR III backplane at J5, Pin
28A.
If four wire audio is used the DSP line cancellation
pot must be set to zero.
The DSP also performs a compressor function on its
line input. The threshold for this compressor must be
adjusted as well. The line level should be adjusted on the
DSP Board prior to setting the compressor threshold.
30
LBI-38636S
REPEATER PANEL INSTALLATION
CSI Model 32 Repeater Panel
Use the following information in Table 11 to
configure the MASTR III base station when installing the
CSI-32 Repeater Panel.
1. Cut the PWB pattern at JP-1 on the T/R Shelf’s
backplane 19D902948.
2. Make the following connections between the
base station and the repeater panel. Connectors
P2, P3, and P5 are located on the backplane.
Connection to the repeater panel is made at J3,
the rear panel DB9 subminiature "D" type
connector.
NOTE
Special Conditions for MUX and Carrier:
1. Add a pad of approximately 15 dB in the
connection between the RCN output and the
MUX input. It is common for the MUX input
to have a test tone level of -16 dB and an
average voice level of -29 dB.
2. Add a pad of approximately 15 dB in the
connection between the Station Control panel
output and the MUX input.
3. Program the base station using the standard PC
programming software. For proper operation, the
station firmware must be 344A3307G12 (Group
12) or higher (MASTR III System Board - U4).
Program the following parameters:
a. Repeater (Single Channel only)
b. Repeater Panel (Community Repeater)
option
c. RF Duplex
d. No CG Encode/Decode
e. No CCT or DODT Timers
f. Remote Programming optional
NOTE
It may be necessary to decrease the value of R5 (or
short across) on the CSI Repeater Panel to obtain
the desired Subaudible Tone Modulation level.
Zetron 38A Repeater Panel
Use the following information in Table 12 to
configure the MASTR III base station when installing the
Zetron 38A Repeater Panel.
1. Cut the PWB pattern at JP-1 on the T/R Shelf’s
backplane 19D902948.
2. Make the following connections between the
base station and the repeater panel. Connectors
P2, P3, and P5 are located on the backplane.
Connection to the repeater panel is made at the
15 pin connector on the rear panel.
3. Program the base station using the standard PC
programming software. For proper operation, the
station firmware must be 344A3307G12 (Group
12) or higher (MASTR III System Board - U4).
Program the following parameters:
a. Repeater (Single Channel only)
b. Repeater Panel (Community Repeater)
option
c. RF Duplex
d. No CG Encode/Decode
e. No CCT or DODT Timers
f. Remote Programming option
4. Set the Repeat RF Modulation and Subaudible
Tone (CG) Modulation levels by adjusting the
Zetron 38A Repeater Panel Audio Output and
CTCSS Output potentiometers or the MASTR III
station’s TX Audio or CG digital potentiometers.
Use the CG pot (CTCSS pot for Zetron 38A) to
adjust the Subaudible Tone Modulation level and
the TX AUDIO pot (Audio Output pot for Zetron
38A) to adjust the Normal Speech Modulation.
4. Set the Repeat RF Modulation and Subaudible
Tone (CG) Modulation levels by adjusting the
Zetron 38A Repeater Panel Audio Output and
CTCSS Output potentiometers or the MASTR III
station’s TX Audio or CG digital potentiometers.
Use the CG pot (CTCSS pot for CSI-32) to adjust
the Subaudible Tone Modulation level and the TX
AUDIO pot (Audio Output pot for CSI-32) to
adjust the Normal Speech Modulation.
The following accessories for the MASTR III Station may be obtained from your local dealer or by calling M/A-COM
After Market Services 24- hour Toll Free Number 1-800-368-3277 (USA only) or FAX 1-800-833-7592. Please provide the
description and part number or package number when ordering.
Service Microphone....................................................................................................................................................SXMC3B
System Module Extender Card........................................................................................................................... 19D903197G1
PC Programming .........................................................................................................................................................TQ-3353
RF Module Test Fixture...............................................................................................................................................TQ-0650
Charger (120 Volt, 60 Hz).....................................................................................................................................344A3168P1
Charger (230 Volt, 50 Hz).....................................................................................................................................344A3168P2
Interface TUAI for Simulcast................... LBI-38948
MANUAL REVISION
LBI-38812J – Added EDACS Interface Panels 19C904009G31 and G32 used in SitePro applications. Updated
parts list and all drawings to the latest revision (Revision 5). Reformatted manual for M/A-COM
Private Radio Systems, Inc.
LBI-38812K – Added revised drawing, 19D904009 ( Revision 7), and safety information
SAFETY NOTICE
• The means of disconnecting power from a station cabinet is the cabinet power supply plug.
• When conducting repair/maintenance, disconnect the cabinet power supply plug from the AC source.
• In European applications, equipment must be installed in a closed cabinet.
• Only replace components with components specified by M/A-COM Private Radio Systems, Inc.
NOTICE!
This manual covers M/A-COM Private Radio Systems, Inc., products manufactured and sold by M/A-COM Private
Radio Systems, Inc.
NOTICE!
Repairs to this equipment should be made only by an authorized service technician or facility designated by the supplier. Any
repairs, alterations or substitution of recommended parts made by the user to this equipment not approved by the
manufacturer could void the user’s authority to operate the equipment in addition to the manufacturer’s warranty.
NOTICE!
The software contained in this device is copyrighted by M/A-COM Private Radio Systems, Inc. Unpublished rights are
reserved under the copyright laws of the United States.
This manual is published by M/A-COM Private Radio Systems, Inc., without any warranty. Improvements and changes to this manual necessitated by
typographical errors, inaccuracies of current information, or improvements to programs and/or equipment, may be made by M/A-COM Private RadioSystems, Inc., at any time and without notice. Such changes will be incorporated into new editions of this manual. No part of this manual may be
reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, for any purpose, without the
express written permission of M/A-COM Private Radio Systems, Inc.
EDACS INTERFACE PANEL (G28) – SITE SENTRY/ELI/SIM (MASTR III)............................................ 37
EDACS INTERFACE PANEL (G29) – PRISM SITE SENTRY/SIM ............................................................38
EDACS INTERFACE PANEL (G30) – PRISM ELI AUDIO .........................................................................39
EDACS INTERFACE PANEL (G31 & G32) – STATION ASSEMBLY WITH SITEPRO........................... 40
LBI-38812K3
SPECIFICATIONS
1.0 SPECIFICATIONS
DIMENSIONS...........................19” wide X 5 1/4” high (3 RU)
MOUNTING..............................Fits standard 19-inch equipment rack.
MODULES ................................ Provides mounting space for one 1 7/8” wide X 5 1/8”
1
high module, and up to five 3” wide X 5 1/8” high
modules. (Spaces may also be combined to
accommodate wider modules.)
1
These specifications are intended primarily for the use of the service technician. Refer to the appropriate Specifications
Sheet in the applicable maintenance manual for the complete specifications.
4LBI-38812K
2.0 PANEL DESCRIPTIONS
The 19D904009G1 through G30 (group 1 through group 30) Enhanced Digital Access
Communications System (EDACS) Interface Panels are used as the connection points
between cables outside and cables inside an EDACS equipment cabinet. The EDACS
Interface Panels are intended to simplify the wiring between EDACS equipment cabinets
through the use of standard cables and easily accessible connection points.
Each EDACS Interface Panel consists of a frame on which one or more interface
modules are mounted. Each EDACS Interface Panel group number, representing one
combination of these interface modules, is described below. The Assembly Diagrams
located at the end of this manual, show where and which interface modules are mounted
on the frame.
19D904009G1 Station Assembly - This interface panel provides the connection points
for the standard EDACS Repeater cabinet to accommodate the IDA Local Telephone
Interconnect. See Assembly Diagram 19D904009, Sheet 1, Part 1 (number in circle).
19D904009G2 CTIS Main Computer Cabinet - This interface panel provides the
connection points for the CTIS Main Computer cabinet to accommodate the PDP
computer. See Assembly Diagram 19D904009, Sheet 2, Part 7 (number in circle).
PANEL DESCRIPTIONS
19D904009G3 CTIS RIC Cabinet - This interface panel provides the connection points
for the cabinet containing the CTIS RIC’s. See Assembly Diagram 19D904009, Sheet 3,
Part 9 (number in circle).
19D904009G4 Simulcast Station - This interface panel provides the connection points
for the Simulcast Station cabinet. See Assembly Diagram 19D904009, Sheet 4, Part 12
(number in circle).
19D904009G5 Simulcast Tx Common Equipment - This interface panel provides the
connection points for the cabinet containing the common equipment at a Simulcast
transmit site. See Assembly Diagram 19D904009, Sheet 5, Part 14 (number in circle).
19D904009G6 Site Controller - PDP11 - This interface panel provides the connection
points for the Site Controller cabinet to accommodate the PDP computer. See Assembly
Diagram 19D904009, Sheet 6, Part 20 (number in circle).
19D904009G7 Auxiliary Receiver - Modem - This interface panel provides the
connection points for voice and data circuits to a cabinet containing Auxiliary Receivers.
See Assembly Diagram 19D904009, Sheet 7, Part 37 (number in circle).
19D904009G8 Euro EDACS Assembly - This interface panel provides the connection
points for station audio and modem data circuits in some European EDACS applications.
See Assembly Diagram 19D904009, Sheet 8, Part 38 (number in circle).
19D904009G9 GETC Simulcast Control Point (1-12) - This interface panel provides
the connection points for the cabinet containing the GETC’s for channels 1 through 12 at
the Control Point location in a Simulcast System. See Assembly Diagram 19D904009,
Sheet 9, Part 39 (number in circle).
19D904009G10 GETC Simulcast Control Point (13-20) - This interface panel
provides the connection points for the cabinet containing the GETC’s for channels 13
through 20 at the Control Point location in a Simulcast System. See Assembly Diagram
19D904009, Sheet 10, Part 40 (number in circle).
LBI-38812K5
SPECIFICATIONS
19D904009G11 Voter Interface Panel - This interface panel provides the connection
points for the cabinet containing the Voter at the Main location in a Voted System or at
the Control Point location in a Simulcast System. See Assembly Diagram 19D904009,
Sheet 11, Part 41 (number in circle).
19D904009G12 Site Controller VAX-DEC (#1) - This interface panel (along with G13)
provides the connection points for the Site Controller cabinet to accommodate the VAX
computer. See Assembly Diagram 19D904009, Sheet 12, Part 42 (number in circle).
19D904009G13 Site Controller VAX-DEC (#2) - This interface panel (along with G12)
provides the connection points for the Site Controller cabinet to accommodate the VAX
computer. See Assembly Diagram 19D904009, Sheet 13, Part 43 (number in circle).
19D904009G14 CTIS Main Computer VAX-DEC - This interface panel replaces the
G2 CTIS Main Computer Cabinet Panel, to accommodate a VAX computer, and
provides the connection points for the latest CTIS Main Computer cabinet. See
Assembly Diagram 19D904009, Sheet 14, Part 44 (number in circle).
19D904009G15 Simulcast Control Point - This interface panel is used to re-map
jackfield appearances of 150-Baud data at the Control Point location in a Simulcast
System. See Assembly Diagram 19D904009, Sheet 15, Part 45 (number in circle).
19D904009G16 Euro EDACS Lease Line Interface - This interface panel provides
connection points for some European EDACS applications requiring 8-pin modular RJ11
type connectors. See Assembly Diagram 19D904009, Sheet 16, Part 46 (number in
circle).
19D904009G17 RIC Transformer Panel - This interface panel provides connection
points and isolation transformers for the RIC audio circuits to the cabinet containing the
RIC Shelves at a CTIS site, or the Control Point location in a Simulcast System. See
Assembly Diagram 19D904009, Sheet 17, Part 47 (number in circle).
19D904009G18 Jessica Control - This interface panel provides connection points for
the EDACS Data Gateway cabinet in the Jessica centralized telephone interconnect
system. See Assembly Diagram 19D904009, Sheet 18, Part 48 (number in circle).
19D904009G19 DVIU Interface Panel - This interface panel provides connection
points for the Console Interface Unit. See Assembly Diagram 19D904009, Sheet 19, Part
49 (number in circle).
19D904009G20 STN Voter Interface - This interface panel provides the connection
points between modem shelves and the IMC switch (or the Voter Selector GETC) for a
Simulcast System. See Assembly Diagram 19D904009, Sheet 20, Part 50 (number in
circle).
19D904009G21 Voter RIC Interface - This interface panel provides connection points
at the Control Point location in a Simulcast System. See Assembly Diagram 19D904009,
Sheet 21, Part 51 (number in circle).
19D904009G22 Auxiliary Receiver RS-232 - This interface panel provides the
connection points for a cabinet containing trunked MASTR III Auxiliary Receivers. See
Assembly Diagram 19D904009, Sheet 22, Part 52 (number in circle).
6LBI-38812K
PANEL DESCRIPTIONS
19D904009G23 Auxiliary Receiver Conventional - This interface panel provides the
connection points for a cabinet containing conventional MASTR III Auxiliary Receivers.
When this interface panel is used in the Voter 95 application, see LBI-39075. See
Assembly Diagram 19D904009, Sheet 23, Part 53 (number in circle).
19D904009G24 Station Assembly with GTI - This interface panel provides the
connection points for the standard EDACS Repeater cabinet to accommodate the ELI
Local Telephone Interconnect. See Assembly Diagram 19D904009, Sheet 1, Part 54
(number in circle).
19D904009G25 Simulcast Tx Site (RS-232 Data) - This interface panel provides the
connection points for the channel clock signal circuits between the Channel Bank, the
Universal Sync. Shelf, and the Digital Cross Connect Panel (at the Control Point
location) or the Transmit Cross Connect Panel (at a Transmit Site) in a Simulcast
System. See Assembly Diagram 19D904009, Sheet 24, Part 55 (number in circle).
19D904009G26 – SIM Interface Panel - This interface panel provides the connection
points for the Site Interface Module (SIM) used in MASTR III station Hotline enhanced
telephone interconnect applications (Site Sentry & ELI). See Assembly Diagram
19D904009, Sheet 26, Part 60 (number in circle).
19D904009G27 – ELI/Site Controller Panel – This interface panel provides the
connection points for the Site Sentry module and Site Interface Module (SIM) used in
EDACS PRISM station Hotline enhanced telephone interconnect applications. See
Assembly Diagram 19D904009, Sheet 27, Part 61 (number in circle).
19D904009G28 SITE SENTRY/ELI/SIM (MASTR III) – This Interface Panel
provides the connections points in a MASTR III system for the power sensor circuits in
the system to the Site Sentry module. It also connects the Site Sentry module to the
Orion Test Unit module via the Site Interface module.
19D904009G29 PRISM SITE SENTRY/ELI/SIM – This Interface Panel provides the
connection points in a Prism MASTR system for the system to the Site Sentry module to
the Orion Test Unit module via the Site Interface module. Connections between the PM
BSL/FSL are made via the Serial Interface module to the SIM shelf.
19D904009G30 PRISM ELI AUDIO – This Interface Panel provides the connection
points in a Prism MASTR system for the Tx audio and intercom audio from each channel
to its appropriate ELI shelf. It also connects the ELI shelf to the telephone lines.
19D904009G31 STATION ASSEMBLY W/SITEPRO (Cabinet w/SIM) – This
interface panel provides the connection points for the standard EDACS repeater cabinet
w/SitePro. Connection points provided are BSL 0, BSL 1, Downlink Data, GTI Audio,
Station Audio and Power Sensor. See Assembly drawing 19D904009, Sheet 29, Part 64
(number in circle).
19D904009G32 STATION ASSEMBLY W/SITEPRO (Cabinet wo/SIM) – This
interface panel provides the connection points for the standard EDACS repeater cabinet
w/SitePro. Connection points provided are BSL 0, BSL1, Ethernet, GTI Audio, Station
Audio and Power Sensor. See Assembly drawing 19D904009, Sheet 29, Part 64 (number
in circle).
A summary of how many of which interface modules make up each EDACS Interface
Panel by group number is shown in Table 1.
LBI-38812K7
PANEL DESCRIPTIONS
Table 1 – Module Makeup of EDACS Interface Panels by Group Number
The following descriptions for each interface module give the application and a reference
to the applicable instruction manual:
19C852204G1 Interface Module - This is a general-purpose interface module that
connects four wires from each of ten six-pin modular connectors (for inside connections)
to two fifty-pin Telco connectors (for outside connections). See LBI-38813.
19C852213G1 Power Monitor Module - This module provides the connection points
for transmitter and antenna power sensor circuits at the Site Controller cabinet when
using the old DB8843-based Power Monitor Unit. (See the 19C852632G1 Power Sensor
Interface Module when using the new DB8860-based Power Monitor Unit.) See LBI-
38815.
19C852215G1 PTT Module - This module is used as a connection point and cross
connect for the PTT and Analog/Digital signaling circuits between the microwave link
and the station transmitters at a Remote Transmit Site in a Simulcast system. See LBI-
38816.
19C852218G1 EDACS Interface Power Monitor Module for Simulcast - This
module provides the connection points for transmitter and antenna power sensor circuits
at a Simulcast site. See LBI-38819.
MODULE DESCRIPTIONS
19C852226G1 EDACS CTIS Module - This module is used to collect and route
telephone interface analog/data for the Central Telephone Interconnect System (CTIS).
See LBI-38818.
19C852313G1 EDACS Interface VAX Site Controller - This module provides the
connection points for the GETC Data circuits in the EDACS Interface Panel for the VAX
Site Controller. See LBI-38943.
19C852323G1 EDACS Interface Serial Module - This module provides the connection
points for the Failsoft and RIC data links. This module has been replaced by the
19C852447G1 module which adds connection points for GETC reset and status lines
(used by Guardog). See LBI-38930.
19C852327G1 Euro EDACS Interface Board - This is a general-purpose interface
module that provides inside connection points for six 8-pin modular connectors. See
LBI-38946.
19C852339G1 TUAI for Simulcast - This module replaces the earlier 19C852219G1
TUAI Module, and provides alarm connection points for up to 25 TUAI channels and up
to four Test Units. See LBI-38948.
19C852349G1 EDACS Interface RIC Transformer Signal In/Out Isolation - This
module provides isolation transformers for eight telephone circuits. See LBI-38947.
19C852379G1 EDACS Interface Power Monitor / Channel Select Module - This
plug-in board provides grounding jumpers for the power sensor circuits connected to a
Power Monitor Unit. This board is used with the 19C852632G1 Power Sensor Interface
Module used with the new DB8860-based Power Monitor Unit. See LBI-38944.
19C852427G1 EDACS Interface Simulcast 150-Baud Interface Module - This
module is used to re-map jackfield appearances of 150-Baud data. See LBI-38945.
LBI-38812K9
MODULE DESCRIPTIONS
19C852447G1 Serial Interface Module - This module replaces the earlier
19C852323G1 Serial Interface Module and adds connection points for the GETC reset
and status lines (used by Guardog) to the previously provided connection points for the
Failsoft and RIC data links. See LBI-39136.
19C852632G1 Power Sensor Interface Module - This module provides the connection
points for transmitter and antenna power sensor circuits at the Site Controller cabinet
when using the new DB8860-based Power Monitor Unit. This module is added to (but is
not a part of) the EDACS Interface Panel in the Site Controller cabinet when the new
DB8860-based Power Monitor Unit is added. This module also comes with two plug-in
19C852379G1 Power Sensor Termination Boards. See LBI-39137.
19D904678G1 RIC-Voter Interface Board - This module provides the connection
points between the Voter Analog Cross Connect Panel, Analog Processing Shelf, and
RIC Shelves at the Main Site of a Voted System (or the Control Point of a Simulcast
System) with IDA Local Telephone Interconnect. See LBI-39022.
19D904833G1 STN-Voter Interface Board - This module provides the connection
points between the Modem Shelves and the Voter Analog Cross Connect Panel (or the
Voter Selector GETC when using Digital Dispatch) at the Main Site of a Voted System
(or the Control Point of a Simulcast System). See LBI-39021.
188D5120G1 Microwave Distribution Panel - This module provides the connection
points and cross connects to group all of low-speed data circuits on one connector, all
alarm circuits on a second connector, and all sync tone circuits on a third connector,
from ten other connectors connected to separate Microwave Cross Connect Panels at the
Control Point of a Simulcast System.
ROA1172209 Timing Interface Module (RS-232 Version) - This module provides the
cross connects for the clock reference circuits between the Transmit (or Control Point)
Cross Connect, Universal Sync Shelf, and Multiplex Cross Connect (or Timing
Concentrator) at the Transmit (or Control Point) site of a Simulcast System. See
Maintenance Manual LBI-39099.
ROA1172410/1 UAS/ELI/SIM – This module provides the connection points between
the power sensor circuits in the system and the Universal Alarm system. See
Maintenance Manual EN/LZB 119 3775/1.
ROA1172485/1 PRISM ELI AUDIO – This module provides the connection points in a
Prism MASTR system for the Tx audio and Intercom audio from each channel to its
appropriate ELI shelf. See Maintenance Manual AE/LZB 119 4601/1.
10LBI-38812K
PARTS LIST
4.0 PARTS LIST
SYMBOLPART NUMBERDESCRIPTION
319C852204G1Interface Modules (Used in G1-G11, G13, G14, G16,
419C852447G1*Serial Interface Module (Used in G1, G2, G4-G6, G12,
1119C852226G1CTIS Module (Used in G3 and G9).
1619C852213G1Power Monitor Module (Used in G6).
1719C852215G1PPT Module (Used in G5).
1919C852218G1Power Monitor Module for Simulcast (Used in G5).
2119C852313G1VAX Site Controller (Used in G12 and G14).
2219D904427G7Simulcast 150-Baud Interface Module (Used in G15).
2319C852339*TUAI for Simulcast (Used in G5).
2419C852327G1Euro EDACS Interface Board (Used in G16, G18, G24,
2519C852349G1RIC Transformer Signal In/Out Isolation (Used in G17).
2719D904833G1STN-Voter Interface Board (Used in G20).
2819D904678G1RIC-Voter Interface Board (Used in G21).
29ROA1172209Timing Interface Module (Used in G25).
30188D5120G1Microwave Distribution Panel (Used in G21).
58ROA1172442/1ELI/Site Controller Module (Used in G27).
59ROA1172410/1UAS/ELI/SIM Interface Module (Used in G28 & G29).
63ROA1172485/1Prism ELI Audio Interface Module (Used in G30).
66FM101263V1Connector Panel (Used in G32).
67CN101314V1RJ-11 Connectors J1 thru J4 (Used in G32).
219D903881P1Frame (One per EDACS Interface Panel).
519A702381P506Screw, Thread Forming, Torx Head, M3.5 – 0.6 x 6 (4
6344A4111P1Label, Adhesive, Name, Assortment (One per EDACS
2
EDACS INTERFACE PANELS
(19D904009G1 – G32)
- - - - MODULES - - - -
G18, G19, G22 - G24, G28, G29, G31 and G32).
G14, G24, G29, G31 and G32).
G28, G29, G30, G31 and G32).
- - - - MISCELLANEOUS - - - -
per smaller modules, 8 per larger modules).
Interface Panel).
2
COMPONENTS ADDED, DELETED OR CHANGED BY PRODUCTION CHANGES
LBI-38812K11
STATION ASSEMBLY DIAGRAM
5.0 STATION ASSEMBLY DIAGRAMS:
EDACS INTERFACE PANEL (G1) – STATION ASSEMBLY
(19D904009, Sh. 1, Rev.7)
12LBI-38812K
STATION ASSEMBLY DIAGRAM
EDACS INTERFACE PANEL (G2) - CTIS MAIN COMPUTER CABINET
(19D904009, Sh. 2, Rev. 7)
LBI-38812K13
STATION ASSEMBLY DIAGRAM
EDACS INTERFACE PANEL (G3) – CTIS RIC CABINET
(Part of 19D904009, Sh. 3, Rev. 7)
14LBI-38812K
STATION ASSEMBLY DIAGRAM
EDACS INTERFACE PANEL (G4) – SIMULCAST STATION
(19D904009, Sh. 4, Rev. 7)
LBI-38812K15
STATION ASSEMBLY DIAGRAM
EDACS INTERFACE PANEL (G5) – SIMULCAST TX COMMON EQUIPMENT
(19D904009, Sh. 5, Rev. 7)
16LBI-38812K
STATION ASSEMBLY DIAGRAM
EDACS INTERFACE PANEL (G6) – SITE CONTROLLER-PDP11