Ied Lc372m User manual

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INSTALLATION INSTRUCTIONS LC372M REMOTE MICROPHONE MODULE

LC372M REMOTE

MICROPHONE MODULE

Installation Instructions

INTRODUCTION

The LC372M remote microphone is an optional component of the IED LANcom SCS system for use with the LC372SR

communications module. This microphone unit is for remote use in classrooms for intercom.

Figure 1 - LC372M Front View

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. Install in accordance with the manufacturer’s in-

structions.

8. Do not install near any heat sources such as ra-

diators, heat registers, stoves, or other apparatus

(including amplifiers) that produce heat.

9. Only use attachments/accessories specified by the

manufacturer.

10. 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 ob-

jects have fallen into the apparatus, the apparatus

has been exposed to rain or moisture, does not

operate normally, or has been dropped.

SAFETY SYMBOLS

Labeling on products and the Installation Instructions &

User Manual may use safety related graphical symbols

as shown below to note safety requirements.

Lightning Bolt: The lightning flash with

arrowhead symbol, within an equilateral triangle,

WARNING symbol, is intended to alert the user to

the presence of un-insulated dangerous voltage

within the product’s enclosure that may be

sufficient in magnitude to constitute a risk of

electric shock to persons or domestic animals.

Exclamation Point: The exclamation point

within an equilateral triangle, CAUTION symbol,

is in-tended to alert the user to the presence of

important operating and maintenance (servicing)

instructions, or a hazard that can damage equip-

ment.

Do not proceed beyond a WARNING or CAUTION notice

until you have understood the hazardous condition and

have taken appropriate steps.

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LC372M REMOTE MICROPHONE MODULE INSTALLATION INSTRUCTIONS

CONNECTIONS

PIN 3

P IN 4

P IN 5

P IN 6

GND

+48V

NO SHU NT = 6 dB GAI N

50d B

26d B

Figure 2 - LC372M Rear View

1. Output RJ45 Connector

This connector is used to send the audio from the microphone and any third-party pushbutton call switches to an

LC372SR or LC331IC. See Table 2 for the connector wiring details.

2. Gain Selection Jumpers

These jumpers are used to adjust the microphone gain. Use higher gain settings when the microphone is not

picking up intercom calls in the room.

CAUTION – Do not place shunts on both J1 and J2 at the same time. Doing so may result in damage to the

equipment.

Pin Function

No Shunt 6 dB of gain

J1 26 dB of gain

J2 50 dB of gain

J1+J2 Not Allowed

Table 1 - Gain Jumper Settings

3. Auxilliary Connector

This connector provides termination points when using pushbutton call switches from other manufacturers. A mo-

nentary switch can be wired to one of the four available control lines and ground. A voltage test point (+48VDC) is

provided as an aid in troubleshooting. Refer to Figure 3 for wiring instructions.

RJ45 Connector Wiring

Each unit connects to either an LC372SR Sound Reinforcement Module or LC331IC Integrated Communications Module

using CAT5 or better structured cable. Each connector should be wired as shown in Table 2.

Pin Function Cat5 Color Code

1 Audio + Orange /W

2 Audio - Orange

3 Switch out Green /W

4 Switch out Blue

5 Switch out Blue/W

6 Switch out Green

7 +48 VDC Brown /W

8 Ground Brown

Table 2 - RJ45 Connector Wiring

PIN 1

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INSTALLATION INSTRUCTIONS LC372M REMOTE MICROPHONE MODULE

Control Pin Functions

The Auxilliary Connector allows a remote pushbutton switch manufactured by others to be used as a remote call switch

in the system. Each switch must be wired to one of the four available control lines. Multiple buttons can be connected to

the same control line when necessary. The function of each control line is listed in Table 3. The functions may be globally

modified in the LANcom SCS software. Control line 6 is configured in software to perform actions such as closing a relay

that can be used to raise and lower a projection screen or blinds.

Pin Function

3 Normal intercom call request

4 Emergency intercom call request

5 Lockdown acknowledgement

6 Software-configurable action

Table 3 - Control Pin Functions

PIN 3

P IN 4

P IN 5

P IN 6

GND

+48V

NO SHUNT = 6 dB GAIN

50d B

26d B

Pushbutton

Switches

Wired to make

normal intercom call

requests

Wired to make

emergency intercom

call requests

Figure 3 - Pushbutton Switch Wiring

Specifications

Mechanical

Dimensions ...................................................... 4.5” W x 4.5” H x 1.06” D (114.3mm W x 114.3mm H x 27mm D)

Projection in Front of Plate ............................................................................................................ 0.013” (32mm)

Mounting Depth ............................................................................................................................. 1.00” (25.4mm)

Mounting Box ..............................................................................................................................2-Gang Deep Box

Recommended Electrical Box .......................... Steel City 52151-1/2-3/4 (4” x 4” Box) with 53151-1/2 Extension

Electrical

Power ...........................................................................................................................................48VDC, 12.5 mA

Max. Audio Output .....................................................................................................................................+27dBu

THD .................................................................................................................................................<= 0.0033%

Frequency Response ............................................................................... -3dB @ 75Hz – 10kHz, -20dB @ 20kHz

Gain (Jumper Selectable) ...................................................................................... +52.7dB, +27.5dB or +6.6dB

S/N @ 53dB gain (+24dBu output) .............................................................................................................. 89dB

S/N @ 26dB gain (+24dBu output) ............................................................................................................. 110dB

S/N @ 6dB gain (+24dBu output) ............................................................................................................... 120dB

Connectors

Power and Audio Out...................................................................................................................................... RJ45

Connects to LC372SR or LC331IC using CAT5 or better

** Do not use an RJ45 boot in the box at the module end **