RTS User Station MCE-325 User manual

F.01U.193.228 Rev. 13 NOVEMBER/2013

USER INSTRUCTIONS

MODEL MCE-325

PROGRAMMABLE USER STATION

Bosch Security Systems, Inc. Technical Manual F.01U.193.228 Rev. 13

2 MCE-325 Programmable User Station

PROPRIETARY NOTICE

The product information and design disclosed herein were origi-

nated by and are the property of Bosch Security Systems, Inc.

Bosch reserves all patent, proprietary design, manufacturing, repro-

duction, use and sales rights thereto, and to any article disclosed

therein, except to the extent rights are expressly granted to others.

reserved. Reproduction, in whole or in part, without prior written

permission from Bosch is prohibited.

*All other trademarks are property of their respective owners.

WARRANTY AND SERVICE INFORMATION

For warranty and service information, refer to the appropriate web

site below:

RTS Intercoms .............................. www.rtsintercoms.com/warranty

RTS Digital

RTSTW

AudioCom

RadioCom

Intercom Headsets.....................................................www.telex.com

CUSTOMER SUPPORT

Technical questions should be directed to:

Customer Service Department

Bosch Security Systems, Inc.

www.telex.com

TECHNICAL QUESTIONS EMEA

Bosch Security Systems Technical Support EMEA

http://www.rtsintercoms.com/contact_main.php

DISCLAIMER

The manufacturer of the equipment described herein makes

no expressed or implied warranty with respect to anything

contained in this manual and shall not be held liable for any

implied warranties of fitness for a particular application or

for any indirect, special, or consequential damages. The

information contained herein is subject to change without

prior notice and shall not be construed as an expressed or

implied commitment on the part of the manufacturer.

THE LIGHTNING

FLASH AND

ARROWHEAD

WITHIN THE

TRIANGLE IS A

WARNING SIGN

ALERTING YOU OF

“DANGEROUS

VOLTAGE” INSIDE

THE PRODUCT.

CAUTION: TO REDUCE

THE RISK OF ELECTRIC

SHOCK, DO NOT REMOVE

COVER. NO USER-

SERVICABLE PARTS

INSIDE. REFER

SERVICING TO

QUALIFIED SERVICE

PERSONNEL.

THE EXCLAMATION

POINT WITHIN THE

TRIANGLE IS A

WARNING SIGN

ALERTING YOU OF

IMPORTANT

INSTRUCTIONS

ACCOMPANYING

THE PRODUCT.

SEE MARKING ON BOTTOM/BACK OF PRODUCT.

WARNING: APPARATUS SHALL NOT BE EXPOSED TO DRIPPING OR

SPLASHING AND NO OBJECTS FILLED WITH LIQUIDS, SUCH AS VASES,

SHALL BE PLACED ON THE APPARATUS.

WARNING: THE MAIN POWER PLUG MUST REMAIN READILY OPERABLE.

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, GROUNDING OF

THE CENTER PIN OF THIS PLUG MUST BE MAINTAINED.

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT

EXPOSE THIS APPRATUS TO RAIN OR MOISTURE.

WARNING: TO PREVENT INJURY, THIS APPARATUS MUST BE SECURELY

ATTACHED TO THE FLOOR/WALL/RACK IN ACCORDANCE WITH THE

INSTALLATION INSTRUCTIONS.

This product is AC only.

Bosch Security Systems, Inc. Technical Manual

MCE-325 Programmable User Station 3

F.01U.193.228 Rev. 13

Important Safety Instructions

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with dry cloth.

7. Do not block any ventilation openings. Install in accordance with the

manufacturer’s instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves,

or other apparatus (including amplifiers) that produce heat.

9. Do not defeat the safety purpose of the polarized or grounding-type plug. A

polarized plug has two blades with one wider than the other. A grounding

type plug has two blades and a third grounding prong. The wide blade or the

third prong are provided for your safety. If the provided plug does not fit

into your outlet, consult an electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched particularly at

plugs, convenience receptacles, and the point where they exit from the

apparatus.

11. Only use attachments/accessories specified by the manufacturer.

12. Use only with the cart, stand, tripod, bracket, or table specified by the

manufacturer, or sold with the apparatus. When a cart is used, use caution

when moving the cart/apparatus combination to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or when unused for long

periods of time.

14. Refer all servicing to qualified service personnel. Servicing is required

when the apparatus has been damaged in any way, such as power-supply

cord or plug is damaged, liquid has been spilled or objects have fallen into

the apparatus, the apparatus has been exposed to rain or moisture, does not

operate normally, or has been dropped.

Bosch Security Systems, Inc. Technical Manual F.01U.193.228 Rev. 13

4 MCE-325 Programmable User Station

Table

Contents

Bosch Security Systems, Inc. Technical Manual F.01U.193.288 Rev. 13

DESCRIPTION & SPECIFICATIONS ...................................................................................... 7

Description ...............................................................................................................................................7

General ................................................................................................................................................................. 7

Features ................................................................................................................................................................ 7

Front Panel Features .................................................................................................................................8

Channel Selector and Operation Buttons ............................................................................................................. 8

Volume Controls .................................................................................................................................................. 8

Sidetone Nulling Trimmers ................................................................................................................................. 8

Connections, Inputs and Outputs .............................................................................................................9

Front Panel ........................................................................................................................................................... 9

Panel Microphone Jack ........................................................................................................................................ 9

Rear Panel Features ................................................................................................................................10

Intercom Lines ................................................................................................................................................... 10

External Program Input ..................................................................................................................................... 10

Speaker Output .................................................................................................................................................. 10

Auxiliary Connector .......................................................................................................................................... 10

Programming ..........................................................................................................................................11

Power .....................................................................................................................................................11

Mounting Configuration ........................................................................................................................11

MCE-325 Specifications ........................................................................................................................12

General ............................................................................................................................................................... 12

Microphone Preamplifier ................................................................................................................................... 12

Headphone Amplifier ........................................................................................................................................ 12

Speaker Amplifier .............................................................................................................................................. 12

Power and Mechanical ....................................................................................................................................... 12

Connectors ......................................................................................................................................................... 12

MCS325 Specifications ..................................................................................................................................... 13

INSTALLATION ........................................................................................................................ 19

Internal Programming and Adjustments ................................................................................................19

General ............................................................................................................................................................... 19

Intercom Line Channel Configurations (DS1-DS3, J6, J7, J19, and J20) .............................................21

Front Panel Setup Mode Lock-out (DS4) .......................................................................................................... 24

ISO (DS5) .......................................................................................................................................................... 24

Remote Talk-off (DS7) ...................................................................................................................................... 24

VOX (DS8) ........................................................................................................................................................ 24

Program Assistant – IFB Option (J4, J5, J16-J18) ............................................................................................ 25

Balanced/Unbalanced Dynamic Microphone Selection (J24) ...........................................................................25

Headphone Sidetone Trimmer Adjustment (R37) .............................................................................................25

Speaker DIM Adjustment (R157) ......................................................................................................................25

Bosch Security Systems, Inc. Technical Manual

6 MCE-325 Programmable User Station

F.01U.193.288 Rev. 13

Mechanical Installation ..........................................................................................................................25

Electrical Installation .............................................................................................................................27

AC Power and Fuse ........................................................................................................................................... 27

Intercom Lines J8, J9, J10 ................................................................................................................................. 27

General ........................................................................................................................................................... 27

Connector Pin Outs ........................................................................................................................................ 27

4-wire Termination ......................................................................................................................................... 28

Program Inputs, J14 and J15 .......................................................................................................................... 28

External Speaker, J27 ..................................................................................................................................... 28

Auxiliary Connector, J22 ............................................................................................................................... 29

4-wire CH A and B Input ............................................................................................................................ 29

Key Outputs – Expanded IFB Option ............................................................................................................ 29

Remote Microphone Switch ........................................................................................................................... 29

ISO Connection .............................................................................................................................................. 30

External Headset ............................................................................................................................................ 30

External Electret Microphone ........................................................................................................................ 30

External DC Power Source ............................................................................................................................ 31

Remote Speaker Mute Control ....................................................................................................................... 31

Front Panel Headset Connections ...................................................................................................................... 31

Headset Requirements .................................................................................................................................... 31

Headset Connections ...................................................................................................................................... 31

OPERATION ..............................................................................................................................33

General ...................................................................................................................................................33

Operating Instructions ............................................................................................................................33

Momentary/Latching Button action .................................................................................................................. 33

LED Indicators .................................................................................................................................................. 33

Channel Selection .............................................................................................................................................. 33

Panel Mic/Headset Mic Selection ..................................................................................................................... 34

Microphone On/Off ........................................................................................................................................... 34

Speaker On/Off .................................................................................................................................................. 34

Volume Adjustment .......................................................................................................................................... 34

Front Panel Sidetone Nulling Trimmer Adjustment ......................................................................................... 34

Sending and Receiving Call Signals ................................................................................................................. 35

Receiving a call: .......................................................................................................................................... 35

Using the Talk-Off Feature ............................................................................................................................... 35

Front Panel Programming ......................................................................................................................35

Activating Setup Mode ...................................................................................................................................... 35

Menu Selection/Ending Setup ........................................................................................................................... 35

Submenus .......................................................................................................................................................... 36

Channel ID ..................................................................................................................................................... 36

4-channel Listen ............................................................................................................................................. 36

Mono .............................................................................................................................................................. 36

Call Disable .................................................................................................................................................... 36

Button Lock .................................................................................................................................................... 37

Latch Disable ................................................................................................................................................. 37

Instant Mic ..................................................................................................................................................... 37

Reset ............................................................................................................................................................... 37

Bosch Security Systems, Inc. Technical Manual F.01U.193.228 Rev. 13

CHAPTER 1

Description & Specifications

Description

General

The MCE-325 is a 4-channel, programmable intercom station. It may be used as a headset station or, with the addition of the

MCS325 Modular Speaker, as a speaker station. It may be mounted in a console or equipment rack via optional mounting kits.

The MCE-325 can be used with either 2-wire or 4-wire intercom lines, or a combination of both. In this manual and in the

labeling on the MCE-325, references to CH 1, 2, 3, and 4 indicate 2-wire lines; references to 4-wire A and 4-wire B indicate

4-wire lines.

The MCE-325 can be interfaced to a variety of external devices including external program sources, 2-way radios, paging

systems, and satellite circuits. Some typical applications are shown in Figure 2 through Figure 10.

Features

Call Signaling Call signaling is accomplished using an inaudible (20kHz) signal to activate a call indicator

LED.

Remote Talk-Off Active, unattended remote station microphones may be deactivated by momentarily

injecting an inaudible (24kHz) signal into the corresponding intercom line. The MCE-325

can send and receive talk-off signals.

VOX Circuit The MCE-325 may be programmed for voice activation of the microphone.

Simple IFB Program audio assigned to a channel is interrupted during talk.

External Device Keying External devices, such as two-way radios, speaker mute relays, or paging systems may be

activated through key outputs at the auxiliary connector on the rear panel. The key outputs

may also be used to expand the simple IFB functions, allowing any number of MCE-325

stations to interrupt the program source and talk on the line.

Microphone Limiter The microphone preamplifier circuit contains a limiter, which helps to equalize voice levels.

Fully Programmable Retains programming even when power is shut off.

8 Description & Specifications MCE-325 Programmable User Station

Bosch Security Systems, Inc. Technical Manual F.01U.193.228 Rev. 13

Front Panel Features

Channel Selector and Operation Buttons

These buttons have two (2) modes of operation: standard operating mode and setup mode. The printing on the face of each

button indicates its function in standard operating mode; printing under each button indicates its setup mode function. (For

operation and programming instructions, see “Operation” on page 33.) An LED located above each button provides status

information.

The MCE-325 is factory pre-programmed for 2-channel operation, with each channel having one (1) talk and one (1) listen

button. However, the MCE-325 may also be programmed so each channel selector button controls both talk and listen for a

single channel, permitting operation of up to four (4) intercom channels. Additionally, users may wish to customize the

identification of channels. With this in mind, a button kit has been supplied with the MCE-325 to allow you to customize the

button labeling to suit your particular application. Figure 11 shows the available button caps as well as some typical button

configurations.

NOTE: The standard buttons are opaque. As a result, the front panel LEDs may not be visible when viewing the MCE-

325 from a low angle (such as when it is mounted high in an equipment rack). As a remedy for this problem,

clear buttons are available to allow the LED light to pass through. For order information, contact “Customer

Support” on page 2.

Volume Controls

CH1 (VOL 1): This control adjusts the volume of CH 1 and/or CH 3 to the left headphone when stereo headphones

are used. It adjusts the mono mix level of these channels when monaural headphones or an external

speaker is used.

CH2 (VOL 2): This control adjusts the volume of CH 2 and/or CH 4 to the right headphone when stereo

headphones are used. It adjusts the mono mix level of these channels when monaural headphones

or an external speaker is used.

PGM VOL: This control adjusts the mono mix of program A and program B (input at the rear panel and

assigned via internal programming) to the headphones and external speaker.

Sidetone Nulling Trimmers

These trimmers are adjusted to prevent acoustic feedback when using a panel microphone along with an external speaker.

MCE-325 Programmable User Station Description & Specifications 9

Bosch Security Systems, Inc. Technical Manual F.01U.193.228 Rev. 13

Connections, Inputs and Outputs

Front Panel

DYNamic MIC HEADSET: This connector accepts a stereo-earphone (5-pin connector), dynamic-mic headset (with or

without a mic on/off switch), or a mono-earphone, dynamic mic headset (4-pin

CARBon MIC HEADSET: This connector accepts a standard 3-conductor, ¼-inch phone plug. The necessary

phantom power is provided to power a carbon microphone or its electronic equivalent.

Panel Microphone Jack

The MCE-325 may be optionally fitted with a gooseneck panel microphone by removing the blanking plug located in the

upper-right corner of the front panel. The panel microphone jack accepts specially made gooseneck microphones (MCP-90

series), which are available from RTS.

FIGURE 1. MCE-325 front and rear panel features

10 Description & Specifications MCE-325 Programmable User Station

Bosch Security Systems, Inc. Technical Manual F.01U.193.228 Rev. 13

Rear Panel Features

Intercom Lines

Connectors J8 and J9 are parallel-wired for loop-through connection to additional stations. These connectors are used either

for 2-wire CH 1 and CH 2 input/output, or 4-wire CH A output. (The 4-wire CH A input is connected at the auxiliary

connector.)

Connector J10 is used for 2-wire CH 3 and CH 4 input/output, or 4-wire CH B output, but no loop-through connector is

provided for these channels. (The 4-wire CH B input is connected at the auxiliary connector.)

The MCE-325 presents a bridging impedance of 10,000Ωto the intercom line, and is designed for use with intercom lines

having a 200Ωline terminating impedance. A 200Ωtermination plug is supplied (connected to J10) to prevent channels three

and four from oscillating when the MCE-325 is in 2-channel mode.

External Program Input

Two (2) ¼-inch phone jacks are provided for external program input. The station accepts line-level, balanced input. The two

(2) program inputs are mixed internally, and may be assigned (through internal programming) to right headphone, left

headphone, external speaker, or any combination of these. In addition, program A may be assigned (through internal

programming) to 2-wire CH 3 or 4-wire CH A; program B may be assigned to 2-wire CH 4, but cannot be assigned to a 4-wire

channel. The program assigned to channels is interrupted during talk output.

Speaker Output

A ¼-inch phone jack is provided for connection of an external speaker (8Ωminimum impedance). The speaker output is

compatible with the MCS325 speaker.

Auxiliary Connector

Standard Options on the 25-pin, female, D-Sub connector are:

•Unswitched microphone output

•ISO connection to a VCP6A/VCP12A/VCP12B

•Microphone on/off switch

•Remote headset

•Remote panel microphone

•Separate inputs for +10 to +15 volts DC, and +17 to +24 volts DC

•Common/ground circuit

•4-wire CH A and B inputs

•Remote speaker mute

•Key outputs

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