Telex C-2000HS, C-2000 Technical Manual

C-2000 and C-2000HS

Technical Manual

F.01U.174.927 Rev 03 09/2011

PROPRIETARY NOTICE

CONTACT INFORMATION

The product information and design disclosed herein were
originated by and are the property of Bosch Security Systems, Inc.
Bosch reserves all patent, proprietary design, manufacturing,
reproduction, use and sales rights thereto, and to any article
disclosed therein, except to the extent rights are expressly granted
to others.

COPYRIGHT NOTICE

Copyright 2011 by Bosch Security Systems, Inc. All rights
reserved. Reproduction, in whole or in part, without prior written
permission from Bosch is prohibited.

*All other trademarks are property of their respective owners.

**MOTOROLA and the Stylized M logo are registered in the U.S.
Patent and Trademark Office.

WARRANTY NOTICE (LIMITED)

For warranty and service information, refer to www.telex.com/
warranty.

FACTORY SERVICE CENTER

Factory Service Center
Bosch Security Systems, Inc.
Radio Dispatch Products
8601 East Cornhusker Highway
Lincoln, Nebraska, 68507

Sales:

Phone ...........................................................[phone]

Fax................................................................[phone]

E-mail................................... [e-mail]

Customer Service Repair:

E-mail...................................... [e-mail]

Phone.............................................................[phone]

Technical Support:

Knowledge Database ..http://knowledge.boschsecurity.com/

Live Chat ..................... www.telex.com/us/dispatch/support

E-mail ................ [e-mail]

Web ..........................................................................www.telex.com

CLAIMS

No liability will be accepted for damages directly or indirectly
arising from the use of our materials or from any other causes. Our
liability shall be expressly limited to replacement or repair of
defective materials.

WARNING

This is a Class A product. In a domestic environment this product
may cause radio interference in which case the user may be
required to take adequate measures.

Do not open the unit. No user serviceable parts are contained
within. Bosch cannot be responsible for damage. If the unit is
opened, the warranty can be voided.

Table

of

Contents

INTRODUCTION......................................................................................................................... 5

Overview.................................................................................................................................................. 5

Features ....................................................................................................................................................6

C-2000HS Features ............................................................................................................................................. 6

C-2000 Features .................................................................................................................................................. 6

Display Character Description ............................................................................................................................ 6

Hardware Overview .................................................................................................................................7

C-2000 Console ................................................................................................................................................... 7

Line Interface ...................................................................................................................................................... 7

Controls and Indicators ............................................................................................................................7

Front Panel ...............................................................................................................................................7

Common Controls and Indicators ............................................................................................................8

Volume Control ................................................................................................................................................... 8

Panel PTT Push button ........................................................................................................................................ 8

DTMF Keypad .................................................................................................................................................... 8

Dual Seven-Segment Display .............................................................................................................................. 8

Function Buttons Up-Down ................................................................................................................................ 8

Transmit LED ...................................................................................................................................................... 8

Monitor ................................................................................................................................................................ 8

Intercom (IC) ....................................................................................................................................................... 8

Rear Panel Connections ...........................................................................................................................9

Rear Panel Ports .................................................................................................................................................. 9

Power Jack ....................................................................................................................................................... 9

Line Port ........................................................................................................................................................... 9

Auxiliary Audio Input ...................................................................................................................................... 9

Auxiliary Speaker ............................................................................................................................................ 9

Battery Backup ............................................................................................................................................... 10

Earth Ground .................................................................................................................................................. 10

Data Port ........................................................................................................................................................ 10

Specifications .........................................................................................................................................10

INSTALLATION 11

Line Setup and Description ....................................................................................................................11

Introduction ....................................................................................................................................................... 11

Feature Description ........................................................................................................................................... 12

Crossmute ....................................................................................................................................................... 12

Supervisor Function ....................................................................................................................................... 12

Relay Contact Closure For Local Control ...................................................................................................... 13

2-Wire/4-Wire Mode ...................................................................................................................................... 13

RX Side Settings ............................................................................................................................................... 13

TX Side Settings ............................................................................................................................................ 14

Transmit Monitor ........................................................................................................................................... 14

Level Adjustments ............................................................................................................................................. 14

Transmit Side Adjustments ............................................................................................................................14

Reference Description.................................................................................................................................... 14

Mic Input level Adjustment ............................................................................................................................... 15

TX Output Level Adjust ................................................................................................................................. 15

Transmit Monitor Setup ................................................................................................................................. 15

RX Level Adjustment ....................................................................................................................................15

SETUP .........................................................................................................................................17

Setup Mode ............................................................................................................................................17

Entering Setup Mode ......................................................................................................................................... 17

Exiting Setup Mode ...........................................................................................................................................18

Maneuvering Through Setup Mode .................................................................................................................. 18

Setup Mode Control Keys .............................................................................................................................. 18

Setup Mode Philosophy ................................................................................................................................. 18

Setup Mode Navigation Overview ................................................................................................................. 20

Setup State 0 PIN Number Entry/Idle ............................................................................................................21

Setup State 1 PIN Number Change ................................................................................................................21

Setup State 2 Guard/Hold Tone Frequency ................................................................................................... 21

Setup State 3 Guard Tone Level .................................................................................................................... 22

Setup State 4 Guard Tone Duration ...............................................................................................................22

Setup State 5 Hold Tone Level ......................................................................................................................22

Setup State 6 Hold Tone PTT Hang Time ..................................................................................................... 23

Setup State 7 Function Tone Level ................................................................................................................ 23

Setup State 8 Function Tone Duration ........................................................................................................... 23

Setup State 9 Single/Dual Function Tone Mode ............................................................................................ 24

Setup State 10 Function Tone Frequency ...................................................................................................... 24

Setup State 11 Monitor Frequency Select ...................................................................................................... 26

Setup State 12 DTMF Keypad Enable/Disable/Enable (without PTT) ......................................................... 26

Setup State 13 DTMF Tone Level .................................................................................................................26

Setup State 14 DTMF Hang Timer ................................................................................................................27

Setup State 15 MIC AGC Enable/Disable ..................................................................................................... 27

Setup State 16 RX AGC Enable/Disable ....................................................................................................... 27

Setup State 17 Main Speaker with Handset Enable/Disable ..........................................................................28

Setup State 18 SF Mode Enable/Disable (Special Software Option) ............................................................ 28

Setup State 19 Aux Speaker Enable/Disable .................................................................................................28

Setup State 20 Function Tone Enable/Disable ...............................................................................................29

Setup State 21 Crossmute Output Enable/Disable .........................................................................................29

Setup State 22 Min Speaker Level Enable/Disable ........................................................................................29

Setup State 23 Handset Mic Level ................................................................................................................. 30

Setup State 24 Deskmic Level .......................................................................................................................30

Setup State 25 Aux Input Port Level .............................................................................................................. 30

Setup State 26 Panel Microphone Input Level ............................................................................................... 31

Setup State 27 RX Line Jack Level ................................................................................................................ 31

Setup State 28 TX Line Jack Level ................................................................................................................ 31

Setup State 29 Clone Mode ............................................................................................................................ 32

Clone Mode Overview ................................................................................................................................... 33

Setup State 30 Full Duplex Mode Enable/Disable .........................................................................................33

Setup State 31 Handset Enable/Disable .........................................................................................................33

Setup State 32 Auto-Monitor Enable/Disable ................................................................................................34

Setup State 33 Tone/Local Mode ...................................................................................................................34

Setup State 34 Squelch Level ......................................................................................................................... 34

Setup State 35 Squelch Enable/Disable ......................................................................................................... 35

Setup State 36 Squelch Hang Time ................................................................................................................ 35

Setup State 37 TX Monitor Enable/Disable ................................................................................................... 35

Setup State 38 Tone Detector Threshold ....................................................................................................... 36

Setup State 39 Headset Enable/Disable ......................................................................................................... 36

Setup State 40 TX Delay Period .................................................................................................................... 37

Setup State 41 Desk Microphone Enable/Disable ......................................................................................... 37

Setup State 42 Ring Type Select (Special Software Option) ......................................................................... 37

Setup State 43 EMSTEL Enable/Disable (Special Software Option) ............................................................ 38

Setup State 44 DTMF Sequence Entry .......................................................................................................... 38

Setup State 45 Ring Duration (Special Software Option) .............................................................................. 39

Setup State 46 DTMF Sequence Enable/Disable ........................................................................................... 40

Setup State 47 Function Tone Launch Delay ................................................................................................. 40

Setup State 48 Parallel Update Enable/Disable ............................................................................................. 40

Setup State 49 Alert Tone Enable/Disable ..................................................................................................... 41

Setup State 50 Alignment Tone On/Off 41

C-6200 Worksheet .................................................................................................................................42

CHAPTER 1

Introduction

Overview

The C-2000 is a full featured single-channel, multi-format, and self-contained desktop radio control console. Its sleek and
modern look compliments any surrounding.

The C-2000 is a DSP (Digital Signal Processor) based design, allowing easy field programmability using the
DTMF (Dual Tone Multi-Frequency) keypad on the front of the console. Unlike other manufacturers’ equipment, no
additional software is required to program the C-2000 console. Modifications and enhancements can generally be made
through software changes only. If the user determines they require a special feature enhancement, please contact the Radio
Dispatch Sales Department for cost and feasibility.

Initial line level adjustments are made via potentiometers allowing for ease of installation. Should additional adjustments be
required, they can be made in the programming mode. AGC (Automatic Gain Control) on the receive and microphone audio
paths help stabilize line level adjustments.

The C-2000’s modular design offers control of one (1) base station, along with selection of 99 frequencies. The line interface
offers crossmute capability and squelch control feature eliminating the unwanted noise that is generally associated when
monitoring a line.

The C-2000 accommodates a desk microphone along with a handset (or headset) as indicated on the side of the C-2000
console. In addition to the external microphone options, a built in panel microphone is available by pressing the
PTT (Push-To-Talk) on the front of the panel. When a PTT occurs from any of the three (3) microphones, the others will mute
so as not to pick-up unnecessary ambient noise during transmission. When the handset is enabled and taken off hook, the
receive audio is transferred to the earpiece.

The console is normally used in conjunction with a matching Radio Dispatch 223 Series (or equivalent) tone-remote panel

located at the base station. The console is compatible with Motorola
control systems employing the industry-standard sequential tone-control format.

The console is connected to the mating panels by means of shielded voice-grade or better leased or private lines (including
microwave circuits). Metallic or DC continuity is not required.

1

, MA/Com Net Ericsson/GE1, and other tone-remote

1. See “Copyright Notice” on page 2.

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6 Introduction C-2000 and C-2000HS Technical Manual

Features

C-2000HS Features

The C-2000HS is shipped from the factory in the following state:

• 4-wire mode

• Full-duplex

• TX monitor enabled

• F3–F16 disabled

• 600 Ohm TX output impedance

• 600 Ohm RX input impedance

C-2000 Features

The C-2000 is shipped from the factory in the following state:

• 4-wire mode

• Full-duplex

• TX monitor enabled

• F3–F16 Disabled

• 600 Ohm TX output impedance

• 600 Ohm RX input impedance

• Handset disabled

• Desk microphone enabled.

Display Character Description

CC (Clone Complete) - Cloning is successful.

CL (Clone Mode) - Clone mode is entered.

CD (Crossmute) - Another parallel console is active and pull crossmute low.

CP (Correct PIN) - The PIN number is correctly entered.

EE (Error) - An error occurred, seen in clone mode if cloning fails.

EP (Enter Pin) - A PIN number needs to be entered to access setup mode.

FD (Function Duration) - Function duration programming mode is entered.

FF (Function Frequency) - Function frequency programming mode is entered.

IP (Incorrect PIN) - An incorrect PIN number was entered.

OC (Option Changed) - The option selected is changed.

PC (PIN Changed) - The PIN was successfully changed.

SS (Settings Saved) - The current settings are permanently saved.

SU (Supervisor) - The supervisor pin is activated by a parallel console.

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C-2000 and C-2000HS Technical Manual Introduction 7

Hardware Overview

The C-2000 is a single-line, multi-mode console designed specifically for small- to medium-level systems. All functions are
housed in a single small modern looking console.

C-2000 Console

The C-2000 console consists of two (2) sub-assemblies; the main processing board and keypad/display board that are enclosed
in a single case.

Line Interface

The Line interface is an 8-pin RJ-45 connector, using either the standard tone control format compatible with
Motorola and M/A ComNet Ericsson/GE or Local Control relay closure. The line interface may be hardware configured for
either a 2-wire or 4-wire operation and may be factory modified to accommodate non-industry standard tone control formats,
if desired. This is usually a software only change.

Controls and Indicators

FIGURE 1. Front Panel

Front Panel

The Front Panel, shown in Figure 1, contains the user I/O. It features volume and function tone selection, intercom and
monitor functions, DTMF keypad, panel PTT and microphone, as well as the dual seven-segment display.

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8 Introduction C-2000 and C-2000HS Technical Manual

Common Controls and Indicators

Vol u me Co n tro l

The Volume Control is used to adjust the receive audio speaker and handset level of the audio present on the receive inputs of
the line interface. A minimum volume level can be configured in the setup mode so the console operator can not turn the
volume to zero (0). When adjusting the level up or down, the display shows the selected level on a relative scale with zero (0)
being off and 25 being full volume.

Panel PTT Push button

The Panel PTT Push button when pressed, audio from the panel microphone, or desk microphone if enabled, is sent on the
TX line interface.

DTMF Keypad

The DTMF keypad is used for transmitting DTMF. The DTMF keypad is also used in the setup mode. It can also be disabled
in user mode.

Dual Seven-Segment Display

The Dual Seven-Segment display is used to select a frequency and updates with parallel frequency selection, if active.

Function Buttons Up-Down

The Up and Down arrows are used to select the desired function tone. Pressing the arrows changes the value in the desired
direction. Once the desired function tone is selected, the unit pauses, blinks and then sends the function tone shown on the
display. The pause and blink rate are programmable in setup mode. Only enabled function tones are displayed and transmitted.
No hold tone is associated with the changing of the function tone. A function tone remains selected until the operator changes
the setting.

Transm i t LED

The Tra nsmit LED lights when any PTT source is depressed keying up the console. It also blinks if a hold tone is detected on
the TX audio line. This indicates to the operator that another console is currently transmitting on the channel.

Monitor

When the Monitor button is pressed a monitor tone burst is sent out. The monitor tone burst consists of a guard tone and
function tone of 2050Hz (default value). The MON LED lights for the duration of the tone burst.

Intercom (IC)

When the Intercom button is pressed and held down the C-2000 transmits audio without activating the tone generator or local
relay. Intercom is considered a PTT operation with the tone generator and local control relay disabled. The selected
microphone is based on setup and/or hookswitch status.

Bosch Security Systems, Inc. Technical Manual F.01U.174.927 Rev 03

C-2000 and C-2000HS Technical Manual Introduction 9

Rear Panel Connections

Rear Panel Ports

The Rear Panel connections are shown in Figure 2, drawing of the rear panel of the C-2000.

Power Jack

The left most jack on the C-2000 is the Power Jack. The power supply included with the unit plugs in to this location. It is a
standard 2.5mm center positive plug and requires at least 12V to operate correctly.

FIGURE 2. Rear Panel

Line Port

The C-2000 is equipped with a single Line Port. the connector is a standard 8-pin RJ-45; the pinout is shown in Figure 3. In
addition to the standard RX and TX pin pairs, the unit can be supervised and supports crossmute functions. Pins 7 and 8 of the
line connector can be used as a form C closure relay for local control. Pins 7 and 8 form the closure during any PTT operation.
An internal resistor makes an external connection to ground unnecessary, and can be removed to remove ground from the
closure path.

Auxiliary Audio Input

The external 6-pin terminal block provides an audio input (1), PTT (2), and GND (6) line. Pulling PTT to ground activates the
audio input line for transmitting audio from an external source. This input is a high impedance capacitance coupled input.

Auxiliary Speaker

Pin 1 of the AUX Port is a capacitance coupled low impedance output used to drive an external speaker amplifier. Output level
is controlled by the front panel volume control.

FIGURE 3. Rear Panel Pinouts

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10 Introduction C-2000 and C-2000HS Technical Manual

Battery Backup

The +12V power input on the AUX Port is used for Battery Backup and is a diode-protected input.

Earth Ground

The Earth Ground connection on the AUX Port must be connected for proper operation. It provides a path for any external
noise to be shunted to.

Data Port

The Data Port is a 0 V to 10V asynchronous port used for cloning one (1) C-2000 to another. The cable is not supplied but the
connector is. To connect two (2) units, RX on one (1) console should be connected to TX of the other console. Ground is
connected straight through. This is a non-standard serial port used only for the C-2000 cloning function.

Specifications

Sequential Tone Line Input and Output Impedance:

Line Input Level: -40dBm to +10dBm adjustable.

Line Output Level: -20dBm to +10dBm into a 600 Ohm line, adjustable (high-level guard

Distortion: 3% maximum at full output.

Hum and Noise: 50dB below operating levels.

Speaker (one): 3in 8 Ohm, heavy-duty.

Amplifier Power: 2W maximum at 3% THD into an 8 Ohm load or equivalent.

Optional Handset Earpiece Level: Adjustable level independent of speaker volume controls.

Audio Frequency Response: ±1.5dB, 300 to 3000Hz, except at the transmit tone notch frequency.

Tone Frequencies: PTT/Guard 2175Hz or 2300Hz. The monitor and frequency function

Operating Temperature Range:

Power Requirements: 0.117 VAC, 60Hz, 25W, or 12.0 VDC at 1A maximum.

Microphone Connection: Handset and headset 4-wire; desk uses 6-wire.

2-Wire: 600 or 10K Ohms, jumper selectable, transformer isolated.

4-Wire TX Line: 600 Ohm or 1 Megohm, jumper selectable, transformer
isolated.

4-Wire RX Line: 600 or 10K Ohm jumper selectable, transformer
isolated.

Local Control Keying: Relay rated at 1A at 125VAC, 3A at 40VDC.

tone only).

tones are programmable from 400Hz to 3000Hz at 50Hz increments.
Accuracy 1Hz.

°C to +70°C (32°F to +158°F).

0

NOTE: Specifications are subject to change with out notice.

Bosch Security Systems, Inc. Technical Manual F.01U.174.927 Rev 03

Line Setup and Description

Introduction

CHAPTER 2

Installation

FIGURE 4. Line Connector Pinout

The Line interface for the C-2000 console provides communication with any standard tone remote system. The pinout of the
line interface connector is shown in Figure 4, which is on the rear panel.

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12 Installation C-2000 and C-2000HS Technical Manual

Feature Description

Crossmute

When a parallel console operator keys a microphone in the same room, the Crossmute function mutes the receive audio path
of the other parallel consoles. This prevents any unwanted audio loops that could occur, causing a loud squeal on the parallel
speakers.

FIGURE 5. Crossmute Function Example

Feedback may be avoided by muting the receive audio of the other consoles which are in parallel with a transmitting console.
This can be accomplished by connecting pins 1 and 8 of each of the consoles to be crossmuted. as shown in Figure 5. Pin 8
must be connected to provide a common ground. Figure 5 illustrates the connections between consoles 1 through 3 that are in
the same room and when one (1) transmits, the receive audio on the other consoles is muted. Console 4 is off-site with no
possibility of feedback, therefore, it is not connected and is not muted.

NOTE: The intercom function does not work between crossmuted consoles.

Supervisor Function

FIGURE 6. Supervisor Function Example

The Supervisor function enables a console, such as the C-1616 which has the capability to drive this line, to disable all units
on a particular line. This includes both PTT and RX audio. Its connection is similar to the crossmute function. By wiring
alone, it is possible to set up only specific consoles with this feature. The connection scheme required to utilize this function is
shown in Figure 6. Pin 2 of all consoles are connected together. Pin 8 is a common ground for all consoles and is connected
together on all consoles.

Assuming console 1 has supervisory capability, when activated, Line 1 on parallel consoles 2 and 3 would then be inhibited
from both transmit and receive. In addition, the C-2000 displays SU on the seven (7) segment display if a master console, such
as the C-1616, activates the supervisor function.

Bosch Security Systems, Inc. Technical Manual F.01U.174.927 Rev 03