Codan Radio Communications UT-3-460-S08 Users Guide
DANIELS
ELECTRONICS LTD.
MT-3 RADIO SYSTEMS
PAGING MODULATOR
INSTRUCTION
MANUAL
CI-PM-3
TM
Covers models: CI-PM-3-00
Copyright © 2002 Daniels Electronics Ltd. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system o r
transmitted in any form or by any means, electronic, mechanical, photocopying, recording or other wise, without the prior written consent o f
Daniels Electronics Ltd.
DE™ is a registered trademark of Daniels Electronic Ltd. registered in the United States Patent and Trademark Office.
Printing Date: Dec 2002 Daniels Electronics Ltd.
Issue Date: February 2002 Previous Issue Date: Nov 99 Victoria, BC
Issue: 4 Rev A Previous Issue: 3
Part No.: IM55-CIPM3 PRINTED IN CANADA
Reviewed By:
NOTE:
The user's authority to operate this equipment could be revoked through any
changes or modifications not expressly approved by Daniels Electronics Ltd.
The design of this equipment is subject to change due to continuous
development. This equipment may incorporate minor changes in detail from the
information contained in this manual.
DANIELS
ELECTRONICS LTD
TM
ii CI-PM-3 Paging Modulator Instruction Manual
TABLE OF CONTENTS
Page
1 GENERAL............................................................................................................................ 1-1
1.1 Introduction.......................................................................................................... 1-1
1.2 Construction......................................................................................................... 1-2
1.3 Printed Circuit Board Numbering Convention...................................................... 1-2
1.4 Specifications........................................................................................................ 1-2
1.4.1 General Specifications.................................................................................... 1-2
1.4.2 CTCSS Decoder/Encoder (Option)................................................................ 1-4
1.4.3 Physical Specifications................................................................................... 1-5
2 THEORY OF OPERATION.................................................................................................2-1
2.1 Paging Signal Path................................................................................................2-1
2.1.1 2-Le v e l D i g i t a l P a g i n g.................................................................................... 2-1
2.1.1.1 Self Test Circuitry.....................................................................................2-2
2.1.2 4-Le v e l D i g i t a l P a g i n g.................................................................................... 2-2
2.1.3 Analog Paging................................................................................................ 2-3
2.1.4 Front Panel Indicator Circuitry....................................................................... 2-4
2.1.4.1 Data Indicator Circuitry............................................................................ 2-4
2.1.4.2 Analog / Digital Indicator Circuitry...........................................................2-4
2.1.4.3 LED Power............................................................................................... 2-4
2.2 OCXO/PLL.......................................................................................................... 2-5
2.2.1 Standard Frequency Reference....................................................................... 2-5
2.2.2 High Stability Frequency Reference............................................................... 2-5
2.3 Configuration Options..........................................................................................2-6
2.3.1 Simultaneous Broadcasting (2 Level Paging Only).........................................2-6
3 ALIGNMENT PROCEDURE AND INSTALLATION......................................................3-1
3.1 General .................................................................................................................3-1
3.2 Repair Notes.........................................................................................................3-1
3.3 Recommended Equipment List .............................................................................3-1
3.4 Installation ............................................................................................................3-2
3.5 Alignment ............................................................................................................. 3-2
3.6 Frequency (Digital Paging) Adjustment................................................................3-2
3.7 Reference (Analog Paging) Adjustment................................................................ 3-3
3.8 Test D a t a S y m m e t r y A d j u s t m e n t.......................................................................... 3-3
3.9 2 And 4 Level Deviation Adjustment.....................................................................3-3
3.10 PLL Setup.............................................................................................................3-4
3.11 Data Delay Setup..................................................................................................3-5
3.12 Simulcast Delay Setup..........................................................................................3-6
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CI-PM-3 Paging Modulator Instruction Manual iii
ALIGNMENT PROCEDURE AND INSTALLATION CONTINUED
3.13 Repeater Configuration.........................................................................................3-8
3.13.1 Base Transmitter Site CI-PM-3 Configuration............................................... 3-8
3.13.1.1 Digital-Only Paging.................................................................................. 3-8
3.13.1.2 Analog/Digital Paging............................................................................... 3-8
3.13.2 Repeater Site CI-PM-3 Configuration............................................................ 3-8
3.13.2.1 Digital-Only Repeater............................................................................... 3-9
3.13.2.2 Analog/Digital Repeater............................................................................ 3-9
3.13.3 TS-64 Configuration.......................................................................................3-9
4 CONNECTOR PIN FUNCTIONS AND JUMPER FUNCTIONS....................................4-1
4.1 Data / Control Port (Connector J1) Pin Functions................................................4-1
4.2 Motherboard Interface (Connector P1) Pin Functions..........................................4-1
4.3 CI-PM-3 Data Delay Jumper Settings..................................................................4-3
4.4 CI-PM-3 Circuit Board Jumpers.......................................................................... 4-4
4.5 TS-64 MOD1 Jumper Settings - (If installed)......................................................4-5
4.6 4-Level Modulation Bit Pattern.............................................................................4-5
4.7 Receiver IF / Audio PCB Jumper Settings............................................................4-5
4.8 Transmitter Audio Processor Jumper Settings......................................................4-6
4.9 Transmitter Synthesizer Jumper Settings..............................................................4-9
4.10 CI-PM-3 Test Points.......................................................................................... 4-10
5 ILLUSTRATIONS AND SCHEMATIC DIAGRAMS.......................................................5-1
5.1 CI-PM-3 Front Panel Controls.............................................................................5-1
5.2 Simulcast Paging Example.................................................................................... 5-2
5.3 CI-PM-3 Component Layout (Through-Hole Side)............................................. 5-3
5.4 CI-PM-3 Component Layout (Surface-Mount Side)............................................5-4
5.5 CI-PM-3 Schematic Diagram............................................................................... 5-5
5.6 CI-PM-3 Schematic Diagram............................................................................... 5-6
5.7 CI-PM-3 Schematic Diagram Component Location Table.................................... 5-7
6 PARTS LISTS......................................................................................................................6-1
6.1 CI-PM-3 Electrical Parts List................................................................................6-1
6.2 CI-PM-3 Mechanical Parts List............................................................................6-5
7 REVISION HISTORY..........................................................................................................7-1
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iv CI-PM-3 Paging Modulator Instruction Manual
LIST OF TABLES
Page
Table 4-1 Data / Control Port (Connector J1) Pin Functions................................................4-1
Table 4-2 Motherboard Interface Connector P1 Pin Functions............................................. 4-1
Table 4-3 Delay Settings....................................................................................................... 4-3
Table 4-4 CI-PM-3 Default Jumper Settings........................................................................ 4-4
Table 4-5 CTCSS Jumper Settings....................................................................................... 4-5
Table 4-6 4-Level Modulation Bit Pattern............................................................................. 4-5
Table 4-9 Receiver IF / Audio PCB Jumper Settings............................................................ 4-5
Table 4-7 Transmitter Audio Processor V1.6 Jumper Settings ............................................. 4-6
Table 4-8 Transmitter Audio Processor V1.8 Jumper Settings ............................................. 4-6
Table 4-9 Transmitter Audio Processor V2.3 Jumper Settings ............................................. 4-8
Table 4-10 CI-PM-3 Test Points.......................................................................................... 4-10
Table 4-11 Component Location Table Schematic.................................................................. 5-7
LIST OF ILLUSTRATIONS
Page
Figure 4-1 Transmitter Audio Processor V1.6 Jumper Settings............................................. 4-6
Figure 4-2 Transmitter Audio Processor V1.8 Jumper Settings............................................. 4-6
Figure 4-3 Transmitter Audio Processor V2.3 Jumper Settings............................................. 4-8
Figure 4-4 VHF and (400 MHz) UHF Synthesizer Analog PCB Jumper Settings................ 4-9
Figure 4-5 VHF and (400 MHz) UHF Synthesizer Digital PCB Jumper Settings ................4-9
Figure 4-5 800MHz and 900MHz Transmitter Synthesizer Jumper Settings ........................ 4-9
Figure 5-1 CI-PM-3 Front Panel Controls.............................................................................5-1
Figure 5-2 Simulcast Paging Example.................................................................................... 5-2
Figure 5-3 CI-PM-3 Circuit Board (Through-Hole Side)...................................................... 5-3
Figure 5-4 CI-PM-3 Circuit Board (Surface-Mount Side)..................................................... 5-4
Figure 5-5 CI-PM-3 Circuit Board Schematic Diagram......................................................... 5-5
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vi CI-PM-3 Paging Modulator Instruction Manual
1 GENERAL
1.1 Introduction
The CI-PM-3 Paging Modulator module is an optional plug-in component of the MT-3 Radio
Repeater System. This module provides digital and/or analog paging capability for Daniels MT-3
transmitters in all supported frequency bands.
The CI-PM-3 is designed for low power consumption, typically drawing less than 250 mA in
steady state. In its standard configuration, the CI-PM-3 uses an on-board frequency reference
source consi s t ing of a 10 MHz OCXO with a standard stability o f 0.03 PPM. For high stability
applications (such as Simulcast), the CI-PM-3 Paging Modulator may be configured to use an
external high stability reference source (i.e. rubidium, GPS or WWV) with a standard stability
greater than or equal to 0.002 PPM, to discipline the on-board phase-locked loop OCXO oscillator.
To ensure that paging signals are the same relative to each transmitter, the CI-PM-3 also
incorporates a limited delay compensation for the different link propagation paths between
transmitters.
The CI-PM-3 Paging Modulator supports both analog and digital paging formats, and can transmit
POCSAG and other 2-level modulation schemes at data transfer rates of 512, 1200, and 2400
Baud. It can also be configured for use as a data repeater, whereby 2-level paging data is recovered,
re-shaped and then re-transmitted to an additional repeater/paging transmitter. The CI-PM-3
supports 4-level modulation formats in non-repeater mode (i.e. in a base station paging transmitter
application only) at data transfer rates up to 1600 BPS. Each of the four modulation deviation
levels can be independently set, making the CI-PM-3 suitable for use in such pager signaling
schemes as Motorola’s FLEX™ Paging Protocol.
Setup conditions are established via front panel switch settings, while internal jumper settings and
setup adjustments are easily accessible using the EC-96, 96 Pin Extender Card.
The CI-PM-3 Paging Modulator includes the following standard features:
- low power analog and CMOS control circuitry.
- extended operating temperature range;
- jumper selectable Repeater/paging transmitter configuration;
- on-board +/-0.03 PPM 10 MHz OCXO;
- front panel selection of PLL OCXO using external high stability frequency reference;
- jumper and line selectable analog / digital paging configuration;
- connection for optional CTCSS encoder / decoder;
- balanced 600 Ω / single-ended microphone input;
- selectable digital delay for Simulcast operation
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CI-PM-3 Paging Modulator Instruction Manual 1-1
1.2 Construction
The CI-PM-3 Paging Modulator is packaged in a compact Eurostandard shell module housing of
nickel/steel with an anodized aluminum front panel. Corrosion resistant fasteners are used
throughout the assembly.
1.3 Printed Circuit Board Numbering Convention
To ease troubleshooting and maintenance procedures, Daniels Electronics Limited has adopted a
printed circuit board (PCB) numbering convention in which the last two digits o f the Circuit Board
number represent the Circuit Board version. For example:
• PCB number 50002-02 indicates Circuit Board version 2.0.
• PCB number 43-912010 indicates Circuit Board version 1.0;
All PCB's manufactured by Daniels Electronics are identified by one of the above conventions.
1.4 Specifications
1.4.1 General Specifications
Model Number: CI-PM-3
Type: MT-3 Series Paging Modulator
Compatibility: MT-3 Series Radio Systems
Modulation: 16K0F3E (FM Analog), and
14K7F1D (FM Data Transmission)
Audio Input: Balanced 600 Ω(tone or voice)
Digital Input: Bipolar: RS-232 compatible
Reference Input: 10 MHz, 0.5 to 2.5 V rms, 50 Ω Front Panel SMA
Reference Output: 10 MHz (Modulated), 2.5 V rms, 50 Ω Front Panel
SMA
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1-2 CI-PM-3 Paging Modulator Instruction Manual
Frequency Stability: Standard: ±0.03ppm from -40°C to +60°C
Optional: External High Stability ±0.002ppm
from -40°C to +60°C (requires
WWV or GPS reference source).
Duty Cycle: Continuous, 100% from -40°C to +60°C
Audio Response: 0 Hz to 3.4 kHz
Maximum Deviation: +/- 50 PPM
Analog / Digital PTT Activation: Front panel connector and rear motherboard
connection
Current Consumption: +13.8 VDC supply: 600 mA power
200 mA steady state
+9.5 VDC supply: 200mA (all options enabled)
80mA (all options disabled)
70mA (LED indicators off).
Operating Temperature Range: -40°C to +60°C
Paging Formats: 4-Level Base Station paging only ( Flex )
2-Level Multiple Transmitter paging (POCSAG)
Simulcast Operation: Supported with the addition of WWV/GPS receiver.
IC Type Approval: Approved for use with MT-3 VHF Tx additional
frequency band approvals to be sought.
FCC Type Acceptance: Approved for use with MT-3 VHF Tx additional
frequency band approvals to be sought.
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CI-PM-3 Paging Modulator Instruction Manual 1-3
1.4.2 CTCSS Decoder/Encoder (Option)
Manufacturer: Communications Specialists Inc.
Model Number: TS-64
Number of Tones: 64
Frequency Range of Tones: 33.0 to 254.1 Hz
Signal to Noise: Better than 4 dB SINAD
Decode Time: 150 ms nominal
Fade Time: 350 ms nominal
Squelch Tail Elimination:: 160 ms reverse phase burst
Current Consumption: 9 mA
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1-4 CI-PM-3 Paging Modulator Instruction Manual
1.4.3 Physical Specifications
Physical Dimensions: Width: Height: Depth:
3.5 cm (1.38") 12.8 cm (5.05") 19 cm (7.5")
Module Weight: 0.4 kg (1 lb.)
Corrosion Prevention: Anodized aluminum construction with stainless steel
hardware. Selectively applied Conformal coated
glass epoxy 4 layer printed circuit boards. Gold
plated module connectors.
Module Design: Compac t Eurostandard modular design. Plug-in
module mates with Daniels standard 19" M3 repeater
subrack. Interchangeable for test and repair.
External Connections: REF Input and Output SMA connectors located on
the module’s front panel. Motherboard Connections
(Audio, Modulation, Power, and Control) are made
through a 96 pin, gold plated type C connector on the
rear of the module. User connections (Audio,
Modulation, and Control) are made through a front
panel DB-15 connector as well as through the 96 pin
connector on the rear of the module.
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2 THEORY OF OPERATION
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CI-PM-3 Paging Modulator Instruction Manual 2-1
3 ALIGNMENT PROCEDURE AND INSTALLATION
3.1 General
The CI-PM-3 Paging Modulator is by default configured for stand-alone base station paging, using
2-Level paging data with a binary polarity of 1, and using the on-board +/-0.03 PPM 10 MHz
OCXO. Table 4-4 contains a complete list of CI-PM-3 default jumper settings. The CI-PM-3 can
also be configured for 4-level signal (base transmitter only) paging, remote paging, link repeater o r
higher stability operation. Each of these configurations is covered separately in the following
sections.
3.2 Repair Notes
Removal and replacement o f surface mount components should be performed only in specifically
designed surface mount rework and repair stations complete with electrostatic discharge (ESD)
protection.
To help prevent damage to the circuit board pads when removing Surface Mount Solder Jumpers, it
is recommended that solder braid be used in place of manual vacuum de-soldering tools.
3.3 Recommended Equipment List
Alignment of the CI-PM-3 requires the following test and radio equipment, or its equivalent:
• Power Supply: Regulated +13.8 VDC at 2 A
• Oscilloscope / Multi-meter: Fluke 97 Scopemeter
• Current Meter: Fluke 75 Multi-meter
• Radio Communications Test Set: Marconi Instruments 2955R (W/External Reference)
• Sub-rack: Daniels SR-3 Series 19” Sub-rack
• System Monitor: Daniels SM-3 Series System Monitor
• Transmitter Module: Daniels Enhanced Performance VT-3 / UT-3 Series
• Extender Card and Cable: Daniels EC-96K, 96 Pin Extender Card and Cable
• Alignment Tool: Johanson 8766
Note: It is highly recommended that the Radio Communications Test Set be frequency locked to
an external 10 MHz reference (WWV or GPS), especially if the factory-adjusted frequency
settings are to be altered in any way.
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CI-PM-3 Paging Modulator Instruction Manual 3-1
3.4 Installation
1. Install the Daniels EC-96 Extender Card in either the far left-hand or the far right-hand slot of
the subrack (as viewed from the front). Remove the side covers of the CI-PM-3 Paging
Modulator and attach the 96-Pin Extender Cable between it and the Extender Card.
2. Apply +13.8 VDC power to the Subrack. Allow approximately 15 minutes for warm-up.
3.5 Alignment
Refer to Figure 5-1 for the location of the CI-PM-3 module front panel controls.
1. Ensure the CI-PM-3 circuit board jumpers are initialized to their default settings (refer to
Table 4-4). Note any differences so that the jumpers can be returned to their former positions.
2. For alignment procedures in this section, set the front panel switches to the following settings,
unless otherwise noted:
a) SW1 (FREQ REF) set to INT
b) SW2 (MODE) set to SETUP
c) SW3 (SET MOD) set to 2 LEVEL
d) SW4 (SET DEV) set to Data “1” (Top Position)
3. Ensure the Transmitter Audio Processor circuit board jumpers are initialized to their default
settings (refer to Tables 4-7 or 4-8).
4. Connect the CI-PM-3 REF OUT connector to the transmitter REFERENCE INPUT connector
via a SMA to SMA RF cable.
5. Remove external connections to the DB-15 connector on the CI-PM-3 or the Alarm lines on the
back of the subrack.
Do not connect any other input signal/control lines to the CI-PM-3 at this time.
3.6 Frequency (Digital Paging) Adjustment
CI-PM-3 frequency adjustments are factory set. It is strongly recommended that they not be
altered. The following procedure applies only if field adjustment is required:
1. Set front panel SW1 (FREQ REF) INT and remove shunt jumper JU6-A.
2. Set shunt jumpers JU23-A and JU41-B.
3. Set the transmitter front panel NORM/KEY TX switch to KEY TX.
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3-2 CI-PM-3 Paging Modulator Instruction Manual
4. Monitor the Communications Test Set and adjust FREQ ADJ potentiometer R82 for the
transmitter operating frequency +/-1 Hz.
5. Set the transmitter front panel NORM/KEY TX switch to NORM and replace JU6-A.
3.7 Reference (Analog Paging) Adjustment
CI-PM-3 Reference frequency adjustment is factory set. It is strongly recommended that they not
be altered. The following procedure applies only if field adjustment is required.
1. Ensure shunt jumper JU6-A is installed.
2. Set shunt jumpers JU23-A and JU41-A (or not installed).
3. Set the transmitter front panel NORM/KEY TX switch to KEY TX.
4. Monitor the Communications Test Set and adjust REF ADJ potentiometer R24 for the
transmitter operating frequency +/-1 Hz.
5. Set the transmitter front panel NORM/KEY TX switch to NORM.
3.8 Test Data Symmetry Adjustment
1. Set the oscilloscope for 1.0 V/Div (vertical) and 0.5 ms/Div (horizontal). Monitor TP10.
2. Set shunt jumpers JU23-A and JU41-B, and set JU36 to bypass.
3. Set SW3 (SET MOD) to 2 LEVEL and SW4 (SET DEV) to the center or “C ontinuous Bit
Stream” position.
4. Adjust R70 (Test Data Symmetry Adjust) for symmetrical positive and negative pulses (i.e. of
equal width) as measured at TP10.
3.9 2 And 4 Level Deviation Adjustment
1. Set shunt jumpers JU23-A and JU41-A (or not installed).
2. Monitor TP11 with a voltmeter and adjust R110 for approximately 4 volts at TP11.
3. Monitor the transmitter frequency and deviation on the Communications Test Set and set the
transmitter front panel NORM/KEY TX switch to KEY TX.
4. Set shunt jumpers JU23-A and JU41-B.
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CI-PM-3 Paging Modulator Instruction Manual 3-3
5. Set SW3 (SET MOD) to 2 LEVEL, and SW4 (SET DEV) to the Data “1” (top) position. For
a VHF system adjust R5 (2-LVL +Dev) for +4.8 kHz deviation (4.8 kHz above center
frequency). For a UHF system adjust R5 for +4.2 kHz deviation.
6. Change SW4 (SET DEV) to the Data “0 ” (bottom) position. For a VHF system adjust R6
(2-LVL -Dev) for -4.8 kHz deviation (4.8 kHz below center fr equency ). For a UHF system
adjust R6 for –4.2 kHz deviation.
7. Set shunt jumper JU23-B.
8. Change SW3 (SET MOD) to 4 LEVEL. Adjust R4 (4-LVL -Dev) for -1.6 kHz deviation.
9. Change SW4 (SET DEV) to the Data “1” (top) position. Adjust R3 (4-LVL +Dev) for + 1.6
kHz deviation.
10. Set SW3 (SET MOD) to 2 LEVEL. Set SW4 (SET DEV) to the center position. Adjust R23
(BP DEV ADJ) for maximum deviation of +/-4.8 kHz.
3.10 PLL Setup
CI-PM-3 PLL adjustments are factory set. It is strongly recommended that they not be altered.
The following procedure applies only if field adjustment is required:
1. Install Power Enable surface mount jumpers JU37, JU39, JU56 and JU59.
2. Ensure front panel SW1 (FREQ REF) is set to EXT, and shunt jumper JU6-A is removed.
3. Set shunt jumpers JU23-A and JU41-A (or not installed).
4. Connect the 50 Ohm output of a high stability, 10 MHz reference to front panel REF IN SMA
connector J3. Ensure the output level of the external reference is between 0.5 to 2.5 V rms.
Steps 5 through 7 apply to Daniels VR-3/150 transmitters.
5. Measure and record the voltage at TP13 with the DMM.
6. Measure the voltage at TP12 with the DMM.
7. Adjust PLL CAL potentiometer R101 until the voltage measured at TP12 matches the voltage
measured in step (5) above within ± 0.2 Vdc. Note that when the PLL locks in, the voltage at
TP12 will also lock in to within ±0.2 Vdc of the voltage at TP13. At this point further
adjustment of R101 will not change the value unless it is brought out of lock.
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Steps 8 and 9 apply to Daniels UHF transmitters.
8. Monitor TP12 with an oscilloscope.
9. Adjust the PLL CAL potentiometer R101 until the voltage measured at TP12 is over 2.7 volts.
You should observe a clean DC voltage when the PLL locks in. Any voltage below 2.7 volts
results in a badly distorted 10 MHz square wave.
10. Replace shunt jumper JU6-A.
3.11 Data Delay Setup
1. Enable the DATA DELAY option by installing Power Enable surface-mount jumpers JU38
And moving the two DATA DELAY shunt jumpers of JU36 to the DELAY (vertical) position.
2. Set front panel switches SW2 (MODE) to SETUP, SW3 (SET MOD) to 2 LEVEL, and S W4
(SET DEV) to “Continuous Bit Stream” (refer to SW4 DETAIL in Figure 6-1).
To calibrate the positive and negative edge delay:
3. Set the oscilloscope for 1.0 V/Div (vertical) and 0.5 µs/Div (horizontal). Select channel 1 as
trigger input and set Trigger Slope to positive.
4. Monitor the data signal at TP9 on channel 1 of the oscilloscope.
5. Monitor and record the period of the data delay pulse at TP7 on channel 2 of the oscilloscope.
6. Set Trigger Slope to negative.
7. Continue monitoring the data signal at TP9 on channel 1 of the oscilloscope while monitoring
the period of the data delay pulse at TP7 on channel 2.
8. Adjust R95, DELAY SYNC, until the period of the data delay pulse measured at TP7 is
identical to that measured in step (5) above.
To set the delay resolution (output frequency of Programmable Counter U22):
9. With surface mount jumpers JU31A, JU32A and JU33A installed, monitor the frequency of the
signal at TP8.
10. Adjust tuning capacitor C55 for a frequency of 1.0 MHz (+/- 10 Hz) at TP8.
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CI-PM-3 Paging Modulator Instruction Manual 3-5
3.12 Simulcast Delay Setup
A typical Simulcast system is depicted in Figure 5-2. To correctly determine the differing
propagation path delays to each transmitter in a Simulcast system and compensate for them, signal
delays in both the transmission medium and the equipment must be known. For the purposes of
this manual, it is assumed that only Daniels MT-3 radio equipment will b e util ized at each paging
site, and that each radio subrack will be identically configured with CI-PM-3 Paging Modulator
modules.
Signal delays from the base transmitter to any paging transmitter are calculated as follows:
Where: t
Delay = t
(Link)
t
(Eqpt)
t
(RX)
t
(PM)
t
(TX)
= Propagation delay from Base TX to Paging TX
=t
= Delay through Receiver
= Delay through Paging Modulator
= Delay through Transmitter
(Link)
(RX)
+ t
+ t
(Eqpt)
(PM)
+ t
(TX)
d = Distance
The delay through the equipment at each paging transmitter site, t
,will be identical for each link,
(Eqpt)
and can therefore be eliminated from our calculations. As such, the only delay variable(s) of
interest will be the distance from the base transmitter to each paging transmitter. Since radio waves
propagate at or near the speed of light (3x108 m/sec), the delay calculation becomes:
Delay = t
(Link)
= d (km)
×
3.33µsec
or
= d (mi)
×
5.37µsec
For the Simulcast system depicted in Figure 5-2, the signal transmitted by PAGING TX #1 will not
be delayed, as this is the furthest site from the BASE TX. However, to ensure identical signal
processing characteristics at each site, the DATA DELAY circuitry of the CI-PM-3 at PAGING
TX #1 will be enabled, bu t with zero delay selected. PAGING TX #2 will have its paging signal
delayed by a value proportional to the difference in distance between PAGING TX #1 and
PAGING TX #2 to the BASE TX. The delay for PAGING TX #2 is therefore calculated as:
Delay
(Link B)
=(d
(Link A)
(km) - d
(Link B)
(km)) × 3.33µsec
or
DANIELS
ELECTRONICS LTD
=(d
TM
(Link A)
(mi) - d
(Link B)
(mi)) × 5.37µsec
3-6 CI-PM-3 Paging Modulator Instruction Manual
The delay calculations for any paging transmitter site in a multiple-transmitter system, with
distances measured from the site of interest back to the BASE TX, becomes:
Delay
(Site of Interest)
=(d
(Furthest Site)
(km) - d
(Site of Interest)
(km)) × 3.33µsec
or
=(d
(Furthest Site)
(mi) - d
(Site of Interest)
(mi)) × 5.37µsec
To set the delay value: Once the required delay has been calculated for a particular paging site, refer
to Table 4-3 delay settings:
a) Locate the DELAY (µsec) value which is closest to the calculated value.
b) Set surface mount jumpers JU31, JU32, JU33, and JU35 according Table 4-3 in section 4.3.
Data Delay Adjust: To set delay values other than those listed in Table 4-3:
1. Set the oscilloscope for 1.0 V/Div (vertical) and 0.5 µs/Div (horizontal). Select channel 1 as
trigger input and set Trigger Slope to positive.
2. Monitor the test data signal at TP9 on channel 1 of the oscilloscope and the output signal at
TP5 on channel 2.
3. Adjust the oscilloscope for maximum horizontal display of the distance between the signals’
leading edges. Adjust tuning capacitor C55 until the output signal’s leading edge on channel 2
is delayed from the input signal’s leading edge on channel 1 by the desired delay amount.
Example: To set a delay of 44 µsec:
i) Set oscilloscope horizontal resolution to 5 µsec/div.
ii) Install surface mount jumpers JU31B, JU32A, JU33A and JU35E (refer to Table 4-3).
iii) Monitor TP9 on channel 1 of the oscilloscope. Monitor TP5 on channel 2 of the oscilloscope.
Adjust C55 for 8.8 horizontal divisions between the signals’ leading edges
(8.8✕5 µsec = 44 µsec delay).
DANIELS
ELECTRONICS LTD
TM
CI-PM-3 Paging Modulator Instruction Manual 3-7
3.13 Repeater Configuration
The CI-PM-3 modules at both the base transmitter and paging/repeater must be configured
individually. Individual setup procedures must also be followed for analog/digital paging and for
digital-only paging.
Note: The CI-PM-3 modules must be set for 2-level signal operation only when configured for
use in a paging repeater system.
3.13.1 Base Transmitter Site CI-PM-3 Configuration
The setup instructions of sections 3.13.1 through 3.13.3 must be completed prior to commencing
setup of the remote paging/repeater site CI-PM-3. Jumper designators separated by a ‘/’ indicates
an ‘and/or’ selection (eg JU19/JU45 means JU19 and/or JU45).
3.13.1.1 Digital-Only Paging
1. Install shunt jumpers JU7-A, JU8-A, JU10-A, JU41-C and JU23-A, JU23-B or JU23-C.
2. Install surface mount jumpers JU22, JU55, and JU20/JU21.
3. Remove surface mount jumpers JU19, JU28, JU29, JU30, JU34, JU43, JU44, JU45, JU52,
JU53 and JU54.
3.13.1.2 Analog/Digital Paging
Ensure the TS-64 CTCSS Module, MOD1, is installed. Refer to section 3.13.3 for TS-64 CTCSS
Module Configuration and settings for jumpers JU52, JU53 and JU54.
1. Install shunt jumpers JU7-A, JU8-A, JU10-B, JU41-A and JU23-A, JU23-B or JU23-C.
2. Install surface mount jumper JU20/JU21, JU22 and JU55.
3. Remove surface mount jumpers JU19, JU28, JU29, JU30, JU34, JU43, JU44, JU45 and JU51.
3.13.2 Repeater Site CI-PM-3 Configuration
At the remote paging/repeater site, the digital paging signal is received and discriminated by the
receiver, reg enera ted (reshaped) by the CI-PM-3, and re-transmitted through the normal CI-PM-3
data signal path. Analog paging signals are routed from the receiver, through the CI-PM-3, then
directly to the transmitter.
DANIELS
ELECTRONICS LTD
TM
3-8 CI-PM-3 Paging Modulator Instruction Manual
3.13.2.1 Digital-Only Repeater
1. Install shunt jumpers JU41-C and JU23-A, JU23-B or JU23-C.
2. Install surface mount jumpers JU7-B, JU8-B, JU10-A, JU19/JU45, JU20/JU21, JU22,
JU29/JU43, and JU55.
3. Remove surface mount jumpers JU34, JU51, JU52, JU53 and JU54.
3.13.2.2 Analog/Digital Repeater
Ensure the TS-64 CTCSS Module, MOD1, is installed. Refer to section 3.13.3 for TS-64 CTCSS
Module Configuration and settings for jumpers JU52, JU53 and JU54.
1. Install shunt jumpers JU7-B, JU8-B, JU10-B, JU41-A and JU23-A, JU23-B or JU23-C.
2. Install surface mount jumpers JU19/JU45, JU20/JU21, JU22, JU28, JU29/JU43, JU30/JU44
and JU55.
3. Remove surface mount jumpers JU34 and JU51.
3.13.3 TS-64 Configuration
1. Ensure POLARITY jumper JP7 is installed.
2. For normal operation (i.e. receiver audio is muted until a CTCSS coded transmission is
received):
a) Ensure TS-64 jumper JP11 is removed.
b) Ground the TS-64 Hang-up Input:
i) Install jumper JU52, or
ii) Remove jumper JU52, install jumper JU53 and ground CTCSS HU/BUSY input J1
Pin 11.
DANIELS
ELECTRONICS LTD
TM
CI-PM-3 Paging Modulator Instruction Manual 3-9
3. To place the TS-64 in monitor mode (i.e. over-ride the decoder and unmute the receiver audio
for channel monitoring):
a) Ensure TS-64 jumper JP11 is removed.
b) Ensure the TS-64 Hang-up Input is floating or above ground potential:
i) Remove jumpers JU52 and JU53, or
ii) Remove jumpe r JU52, install jumper JU53, and leave CT CSS HU/BUSY input J1
Pin 11 floating.
4. To disable paging transmission while the channel is busy:
a) Install TS-64 jumper JP11.
b) Remove jumper JU52, install jumpers JU53 and JU54.
DANIELS
ELECTRONICS LTD
TM
3-10 CI-PM-3 Paging Modulator Instruction Manual
4 CONNECTOR PIN FUNCTIONS AND JUMPER FUNCTIONS
4.1 Data / Control Port (Connector J1) Pin Functions
Table 4-1 Data / Control Port (Connector J1) Pin Functions
PIN NAME FUNCTION
1 2-Lvl Data 2 Level RS-232 Data input.
2 4-Lvl Data 4 Level RS-232 Data input.
3 Ext Clock External Clock for 4 Level signal synchronization.
4 2-Lvl/4-Lvl Select 2 Level / 4 Level select. Low = 2 Level, High = 4 Level.
5 A/D Mode Select Analog / Digital Mode select. Low = Digital, High = Analog.
6 Discr O/P Discriminator Output from Receiver.
7 PTT Push To Talk.
8 Ground Ground.
9 Balanced Audio I/P 1 Balanced Audio Input 1. Routed directly to Transmitter.
10 Balanced Audio I/P 2 Balanced Audio Input 2. Routed directly to Transmitter.
11 Data Out Regenerated digital data from receiver.
12 HU/Busy CTCSS Hang Up / Busy signal from optional CTCSS module.
13 No Connection 14 No Connection 15 No Connection -
4.2 Motherboard Interface (Connector P1) Pin Functions
Table 4-2 Motherboard Interface Connector P1 Pin Functions
Note: Bolded entries are utilized by CI-PM-3
PIN NAME FUNCTION
C1 IMC1 Inter-module Communications Line No. 1
B1 5W RX AUDIO 5W RX A/RX B Audio From System Monitor
A1 5W RX AUDIO 5W RX A/RX B Audio From System Monitor
C2 TX A AUDIO CNTL TX A Audio Control
B2 13.8V 13.8V from M3 Motherboard J8 (Unregulated)
A2 13.8V 13.8V from M3 Motherboard J8 (Unregulated)
C3 IMC2 Inter-module Communications Line No. 2
B3 RX A AMPD AUDIO RX A Amplified Audio Output
A3 RX B AMPD AUDIO RX B Amplified Audio Output
C4 TX B AUDIO CNTL TX B Audio Control
B4 9.5V Regulated +9.5V from System Monitor
A4 9.5V Regulated +9.5V from System Monitor
C5 IMC3 Inter-module Communications Line No. 3
B5 RX A 9.5V RX A Current Sense Output Line (Supply)
A5 RX B 9.5V RX B Current Sense Output Line (Supply)
C6 ALARM 1 Inter-module Alarm Line No. 1.
B6 TX A PTT Transmitter A Press To Talk input.
A6 TX B PTT Transmitter B Press To Talk input.
C7 ALARM 2 Inter-module Alarm Line No. 2.
B7 RX A 9.5V MON RX A Current Sense Output Line (Module)
A7 RX B 9.5V MON RX B Current Sense Output Line (Module)
C8 ALARM 3 Inter-module Alarm Line No. 3
B8 RX A COR RX A Carrier Operated Relay Output
A8 RX B COR RX B Carrier Operated Relay Output
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CI-PM-3 Paging Modulator Instruction Manual 4-1
PIN NAME FUNCTION
C9 ALARM 4 Inter-module Alarm Line No. 4
B9 TX A STANDBY TX A Audio Standby
A9 TX B STANDBY TX B Audio Standby
C10 RX A SQL OVERRIDE RX A Squelch Disable Input
B10 RX A DISC O/P RX A Discriminator Output
A10 TX A PTT OUT TX A Microphone Press To Talk Output
C11 ALARM 5 Inter-module Alarm Line No. 5
B11 SPARE 5 Inter-module Spare Line No. 5
A11 SPARE 6 Inter-module Spare Line No. 6
C12 RX A SQL FLAT RX A Squelched, Flat Audio Output
B12 RX A ISO COR A RX A Isolated Carrier Operated Relay, Side A O/P
A12 RX A ISO COR K RX A Isolated Carrier Operated Relay, Side K O/P
C13 ALARM 6 Inter-module Alarm Line No. 6
B13 RX A DISC L/P O/P RX A Discriminator Low-Pass Audio Output
A13 RX B DISC L/P O/P RX B Discriminator Low-Pass Audio Output
C14 RX B SQL DE-EMP RX B Squelched, De-Emphasized Audio Output
B14 SPARE 3 Inter-module Spare Line No. 3
A14 SPARE 4 Inter-module Spare Line No. 4
C15 ALARM 7 Inter-module Alarm Line No. 7
B15 RX A SIG STREN RX A Signal Strength Indicator Output
A15 RX B SIG STREN RX B Signal Strength Indicator Output
C16 TX B BAL I/P 1 TX B Balanced Audio Input, Side 1
B16 TX B SUBT I/P 1 TX B Subtone Audio Input No. 1
A16 TX B PTT OUT TX B Microphone Press To Talk Output
C17 ALARM 8 Inter-module Alarm Line No. 8
B17 TX A VSWR FWD TX A VSWR Forward Level Indicator Output
A17 TX B VSWR FWD TX B VSWR Forward Level Indicator Output
C18 TX A BAL I/P 1 TX B Balanced Audio Input, Side 1
B18 TX A BAL I/P 2 TX B Balanced Audio Input, Side 2
A18 TX B BAL I/P 2 TX B Balanced Audio Input, Side 2
C19 SPARE 1 Inter-module Spare Line No. 1
B19 TX A VSWR REV TX A VSWR Reverse Level Indicator Output
A19 TX B VSWR REV TX B VSWR Reverse Level Indicator Output
C20 SPARE 2 Inter-module Spare Line No. 2
B20 TX A DIR MOD TX A Direct Modulation Input
A20 TX B DIR MOD TX B Direct Modulation Input
C21 TX A CSEL D0 TX A Channel Select Line No. D0
B21 TX A CSEL D1 TX A Channel Select Line No. D1
A21 TX A CSEL D2 TX A Channel Select Line No. D2
C22 TX A SUBT I/P 1 TX A Subtone Audio Input No. 1
B22 RX A MUTE RX A Mute Input
A22 RX A SQL DE-EMP RX A Squelched, De-Emphasized Audio Output
C23 TX A CSEL D3 TX A Channel Select Line No. D3
B23 RX A CSEL D0 RX A Channel Select Line No. D0
A23 RX A CSEL D1 RX A Channel Select Line No. D1
C24 TX A SUBT I/P 2 TX A Subtone Audio Input No. 2
B24 RX A BAL O/P 1 RX A Balanced Audio Output, Side 1
A24 RX A BAL O/P 2 RX A Balanced Audio Output, Side 2
C25 RX A CSEL D2 RX A Channel Select Line No. D2
B25 RX A CSEL D3 RX A Channel Select Line No. D3
A25 TX B CSEL D0 TX B Channel Select Line No. D0
C26 TX B SUBT I/P 2 TX B Subtone Audio Input No. 2
B26 RX B SQL OVERRIDE RX B Squelch Disable Input
A26 RX B MUTE RX B Mute Input
DANIELS
ELECTRONICS LTD
TM
4-2 CI-PM-3 Paging Modulator Instruction Manual
PIN NAME FUNCTION
C27 TX B CSEL D1 TX B Channel Select Line No. D1
B27 TX B CSEL D2 TX B Channel Select Line No. D2
A27 TX B CSEL D3 TX B Channel Select Line No. D3
C28 RX B DISC O/P RX B Discriminator Audio Output
B28 RX B ISO COR K RX B Isolated Carrier Operated Relay, Side K O/P
A28 RX B ISO COR A RX B Isolated Carrier Operated Relay, Side A O/P
C29 RX B CSEL D0 RX B Channel Select Line No. D0
B29 RX B CSEL D1 RX B Channel Select Line No. D1
A29 RX B CSEL D2 RX B Channel Select Line No. D2
C30 RX B BAL O/P 1 RX B Balanced Audio Output, Side 1
B30 RX B BAL O/P 2 RX B Balanced Audio Output, Side 2
A30 RX B SQL FLAT RX B Squelched, Flat Audio Output
C31 RX B CSEL D3 RX B Channel Select Line No. D3
B31 RX A PRIORITY COR RX A Priority COR (not affected by Mute)
4.3 CI-PM-3 Data Delay Jumper Settings
Table 4-3 Delay Settings
JUMPER SETTINGS DELAY DISTANCE DISTANCE
JU33 JU32 JU31 JU35 (µSec) (km) (mi)
AAAA4 1.20 0.75
AABA8 2.40 1.49
AAAC12 3.60 2.24
ABAA16 4.80 2.98
AAAE20 6.00 3.73
ABBC24 7.20 4.47
ABBA32 9.60 5.97
AABE40 12.00 7.46
ABAC48 14.40 8.95
BAAA64 19.20 11.93
ABAE80 24.00 14.91
ABBC96 28.80 17.90
BABA128 38.40 23.86
ABBE160 48.00 29.83
BAAC192 57.60 35.79
BBAA256 76.80 47.72
BAAE320 96.00 59.65
BABC384 115.20 71.59
BBAB512 153.60 95.45
BABE640 192.00 119.31
BBAC768 230.40 143.17
BBAD1024 307.20 190.89
BBAE1280 384.00 238.62
BBAF1536 460.80 286.34
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CI-PM-3 Paging Modulator Instruction Manual 4-3
4.4 CI-PM-3 Circuit Board Jumpers
Table 4-4 CI-PM-3 Default Jumper Settings
REF.
DESIG. DESCRIPTION
JU1 2-LVL Polarity Select (A = Inverted ; B = Normal) Shunt B
JU2 4-LVL Polarity Select (A = Normal; B = Inverted) Shunt A
JU3 RX A Balanced O/P 1 Enable SM Solder Not Installed
JU4 RX A Balanced O/P 2 Enable SM Solder Not Installed
JU5 XO Polarity Select (A = Normal; B = Inverted) Shunt B
JU6 XO Select (A=OCXO; B=VCXO) Shunt A
JU7 Data Regeneration (A = Disable; B = Enable) SM Solder A
JU8 Data Input (A = Data/Ctrl Port; B=RX A Regenerated Data) SM Solder A
JU9 Discriminator O/P To Front Panel J1 Enable SM Solder Not Installed
JU10 Repeater CTCSS Enable (A = Disable; B = Enable) SM Solder A
JU11 TX A Direct Modulation Enable SM Solder Installed
JU12 TX B Direct Modulation Enable SM Solder Not Installed
JU13 TX A Subtone I/P 2 Enable SM Solder Not Installed
JU14 TX B Subtone I/P 2 Enable SM Solder Not Installed
JU15 TX A Balanced I/P 1 Enable SM Solder Installed
JU16 TX B Balanced I/P 1 Enable SM Solder Not Installed
JU17 TX A Audio Control Enable SM Solder Installed
JU18 TX B Audio Control Enable SM Solder Not Installed
JU19 RX A COR Enable SM Solder Not Installed
JU20 TX A PTT Enable SM Solder Installed
JU21 TX B PTT Enable SM Solder Not Installed
JU22 Repeater PTT Enable SM Solder Not Installed
JU23 Level Select (A=2/4-LVL; B=4-LVL) Shunt A
JU24 TX A Balanced I/P 2 Enable SM Solder Installed
JU25 TX B Balanced I/P 2 Enable SM Solder Not Installed
JU26 Alarm 7 To TX A and B Balanced O/P 1 Enable SM Solder Installed
JU27 Alarm 5 To TX A and B Balanced O/P 2 Enable SM Solder Installed
JU28 CTCSS RX A Mute Bypass SM Solder Not Installed
JU29 RX A Discriminator Output Enable SM Solder Not Installed
JU30 RX A Mute Enable SM Solder Not Installed
JU31 Data Delay Selection (Refer to Table 4-3) SM Solder A
JU32 Data Delay Selection (Refer to Table 4-3) SM Solder A
JU33 Data Delay Selection (Refer to Table 4-3) SM Solder A
JU34 CTCSS PTT Bypass SM Solder Installed
JU35 Data Delay Selection (A - F, Refer to Table 4-3) SM Solder A
JU36 Data Delay/By-Pass Shunt Bypass
JU37 Switched 8.0 Volts For PLL I/O Circuitry SM Solder Not Installed
JU38 Switched 8.0 Volts For Data Delay Circuitry SM Solder Not Installed
JU39 Switched 5.0 Volts For PLL I/O Circuitry SM Solder Not Installed
JU40 Switched 5.0 Volts For Regenerated PTT and Data Delay Circuitry SM Solder Not Installed
JU41 Analog/Digital Mode Over-ride Shunt A
JU42 Low Frequency Deviation Enable SM Solder Not Installed
JU43 RX B Discriminator O/P Enable SM Solder Not Installed
JU44 RX B Mute Enable SM Solder Not Installed
JU45 RX B COR Enable SM Solder Not Installed
JU46 RX B Balanced O/P 1 Enable SM Solder Not Installed
JU47 RX B Balanced O/P 2 Enable SM Solder Not Installed
JU48 External Clock Enable (A = Disable; B = Enable) Shunt A
JU49 Switched 5.0 Volts For 2-LVL / 4-LVL Switching Circuitry SM Solder Installed
JU50 RS-232 Data Out Enable SM Solder Not Installed
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JUMPER
TYPE
DEFAULT
POSITION
4-4 CI-PM-3 Paging Modulator Instruction Manual
REF.
DESIG. DESCRIPTION
JUMPER
TYPE
DEFAULT
POSITION
JU51 Repeater Digital-Only PTT Enable SM Solder Installed
JU52 TS-64 Hang-up RX Mute SM Solder Not Installed
JU53 TS-64 Busy Input Enable SM Solder Not Installed
JU54 TS-64 Busy Input Connect to COR SM Solder Not Installed
JU55 TS-64 Repeater PTT Enable (Analog/Digital only) SM Solder Not Installed
JU56 Switched 9.5 Volts For Reference Input Circuitry SM Solder Not Installed
JU57 U18 (14174 IC) enable SM Solder Not Installed
JU58 Data regeneration SM Solder Not Installed
JU59 PLL calibration reference SM Solder Not Installed
JU60 U4 or U4A select SM Solder Not Installed
4.5 TS-64 MOD1 Jumper Settings - (If installed)
Table 4-5 CTCSS Jumper Settings
REF.
DESIG. DESCRIPTION
JP1-JP6 CTCSS Tone Frequency Select *
JP7 RX Audio Mute Polarity (Installed: Mute = Open, Not Installed: Mute = Ground) Installed
JP8-JP10 TX Time-Out-Timer Interval Select *
JP11 Hang-Up/Busy-Input Configure (Installed = Busy-Input, Not Installed = Hang-Up Input) Not Installed
Note: Refer to TS-64 Instruction Sheet for configuration details.
DEFAULT
POSITION
4.6 4-Level Modulation Bit Pattern
Table 4-6 4-Level Modulation Bit Pattern
J1-PIN1
(BIT 0)
0 0 - 4800 Hz
0 1 - 1600 Hz
1 1 + 1600 Hz
1 0 + 4800 Hz
J1-PIN2
(BIT 1)
4.7 Receiver IF / Audio PCB Jumper Settings
Table 4-9 Receiver IF / Audio PCB Jumper Settings
JUMPER POSITION
JU5 Short
JU25 Short
JU37 Open
Note: All other jumper settings as per the factory defaults.
DEVIATION
SETTING
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CI-PM-3 Paging Modulator Instruction Manual 4-5
4.8 Transmitter Audio Processor Jumper Settings
Figure 4-1 Transmitter Audio Processor V1.6 Jumper Settings
JU35 JU38 JU1
JU34
JU28
JU8
JU9
JU15
JU27
JU6
100nF
JU11
CIPM3M6A
Table 4-7 Transmitter Audio Processor V1.6 Jumper Settings
JUMPER POSITION JUMPER POSITION
JU1 Y JU15 Open
JU6 (VHF) Replaced with 100nF JU27 Y
JU6 (UHF) Short JU28 Y
JU8 Short JU34 Y
JU9 Open JU35 Y
JU11 Open JU38 Y
JU10 Short
Note: All other jumper settings as per the factory defaults.
Figure 4-2 Transmitter Audio Processor V1.8 Jumper Settings
JU35
JU38
JU37
JU11
JU27
JU9
JU15
JU5
JU6
100nF
CIPM3M7A
JU34
JU28
JU1
JU8
Table 4-8 Transmitter Audio Processor V1.8 Jumper Settings
Jumper Balanced
I/P
JU1 OUT OUT Direct Modulation Circuits Power Source Select
JU2 OUT OUT MT-2 Deviation Enable (MT-2 Transmitters)
JU3 OUT OUT Microphone Preamplifier Flat Response
JU4 OUT IN Subtone Input 2 Audio Path Select
JU5 OUT OUT / Y Auxiliary Input Enable (DC Or AC Coupled)
JU6 IN(UHF) IN(UHF) Processed Audio Path Enable (Limited And Filtered). Replace with a
JU7 OUT OUT Unprocessed Auxiliary Audio Path Enable (Unfiltered)
JU8 IN IN Audio Output DC Coupled
JU9 OUT OUT Balanced Input Pre-emphasis Response Enable
JU10 IN OUT Balanced Input Flat Audio Response Enable
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Subtone I/P
1 / 2
Description
100nF capacitor for VHF
4-6 CI-PM-3 Paging Modulator Instruction Manual
JU11 Y OUT Balanced Input To Auxiliary Audio Circuit Enable
JU12 OUT OUT Tone/Digital Input To Auxiliary Audio Circuit Enable
JU13 OUT OUT / IN Direct Modulation Input To Auxiliary Audio Circuit Enable
JU14 OUT OUT Auxiliary Input Pre-emphasis Response Enable
JU15 OUT OUT / IN Auxiliary Input Flat Audio Response Enable
JU16 OUT IN / OUT Subtone Input 1 Audio Path Select
JU17 OUT OUT MT-2 Temperature Compensation Bypass
JU18 OUT OUT Continuous Data Mode Selection
JU19 X X Audio Switches Power Source Select (X=Continuous, Y=Switched)
JU20 Y Y Q2 Power Source Select (Y=Continuous, X=Switched)
JU21 Y Y Bilateral Switch Power Source Select (Y=Continuous, X=Switched)
JU22 X X Audio Output To Splatter Filter
JU23 OUT OUT / IN Direct Modulation Input To Subtone 2 Enable
JU24 OUT OUT Splatter Filter Response Select
JU25 OUT OUT Splatter Filter Response Select
JU26 OUT OUT Splatter Filter Response Select
JU27 Y Y Direct Modulation Input Audio Path Select
JU28 Y Y Amplified Direct Modulation Bypass
JU29 OUT OUT Amplified Direct Modulation Input DC Coupled Enable
JU30 OUT OUT Amplified Direct Modulation Audio Path Select
JU31 OUT OUT Audio Output AC-Coupled (MT-3 Synthesized Transmitters)
JU32 OUT OUT Audio Output AC-Coupled (MT-3 Crystal Transmitters)
JU33 OUT OUT Audio Output AC-Coupled
JU34 Y Y Audio Output From Direct Modulation Circuits Select
JU35 OUT OUT Direct Modulation Output Source Select
JU36 Y OUT AGC Preamplifier Power Source Select (Y=Continuous, X=Switched)
JU37 OUT OUT Direct Modulation Output Enable
JU38 OUT OUT / X Subtone 2, DC Coupled, To Direct Modulation Output Select
JU39 OUT OU T Direct Modulation Low Input Impedance Enable
JU40 OUT OUT Microphone Preamplifier Power Enable
JU41 Not Used
JU42 OUT OUT Processed Audio Path To Direct Modulation Output
JU43 OUT OUT Bilateral Switch U9 Bypass Enable
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CI-PM-3 Paging Modulator Instruction Manual 4-7
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