Telex Audiocom WM1000 Manuale utente

Telex®

User Instructions

Model WM1000 / WM2000

Wall Mount Intercom Stations

Audiocom®Intercom Systems

Volume

WM2000

GRN 1

RED 2

Ch Select Talk

Call

Listen

Headset

WM2000 Shown

FCC Statement

This equipment uses and can radiate radio frequency energy that may cause in-

terference to radio communications if not installed in accordance with this man-

ual. The equipment has been tested and found to comply with the limits of a

Class A computing device pursuant to Subpart J, Part 15 of FCC Rules which

are designed to provide reasonable protection against such interference when op-

erated in a commercial environment. Operation of this equipment in a residential

area may cause interference which the user (at his own expense) will be required

to correct.

This product meets Electromagnetic Compatibility Directive 89/336/EEC.

Introduction.

Thank you for purchasing the Audiocom WM1000 / WM2000 Wall Mount In-

tercom Station. We hope the many design features of this product will satisfy

your intercommunication requirements for many years to come. To get the most

out of your new intercom station, please take a few moments to look through

this booklet before using the Intercom Station for the first time.

Table of Contents

Description .............4

Features ..............5

Installation .............6

Unpacking ............6

Configuration Switch Pre-check ........6

Intercom Channel Connections ........7

Dynamic-Mic Headset Connection .......9

Power-Up ............10

Sidetone Adjustment ..........10

Operation .............17

Channel Select (WM2000 Only) ........17

Receiving Calls ...........17

Calling an Intercom Channel ........17

Specifications ............18

Factory Service and Parts Information .......20

Description

The WM1000 and WM2000 Intercom Stations are designed for stationary, wall-

mounted installation in standard two-gang electrical boxes. The WM1000 is a

single-channel station; the WM2000 provides switch-selectable access to either of

two intercom channels. The WM1000 and WM2000 are ideal when users need to ac-

cess the intercom system from strategic locations where a desktop station would be

unsuitable, but they do not wish to carry around a belt-pack station. Since all of the

intercom electronics are in the intercom station, the user need only connect a headset

or telephone style handset to begin communicating. Alternatively, a headset or tele-

phone handset can be left at the station.

Audiocom®

WM2000

GRN 1

RED 2

Ch Select

Headset

Volume

Talk

Call

Listen

SW1

Ch 2

Ch 1

TOP

FRONT

BACK

11 (4 Places)

CLOSED (ON)

OPEN (OFF)

DIP SWITCH

POSITIONS

Figure 1. Reference view, WM2000 shown (See numbered features list)

Features

1. ChannelSelectSwitch(WM2000Only):Usedtoswitchbetweenintercomchan-

nelsoneandtwo.Theswitchlightsgreenforchanneloneandredforchanneltwo.

2. Intercom Listen Key: Both momentary (push-to-listen) and latching (hands-free

listen) are possible.

3. Call Key: Used to send call signals on the intercom channel and to indicate in-

coming calls.

4. Intercom Talk Key: Both momentary (push-to-talk) and latching (hands-free

talk) are possible. Additionally, the WM1000 / WM2000 has a feature called

"mic kill receive" which lets an operator at a remote master station (such as the

US2000A) turn off the talk key.

5. Dynamic-Mic Headset Connector: 4-pin male XLR connector accepts headsets

with monaural headphones and either a balanced or unbalanced dynamic micro-

phone.

6. Volume Control: Adjusts intercom volume to headphones.

7. Audiocom / Clear-Com* Selector Switch: The selector switch sets the intercom

station for compatibility with either Audiocom or Clear-Com channel connector

pin-outs, channel power requirements, and call signaling requirements.

8. Configuration DIP switches: DIP switches are provided to enable/disable the fol-

lowing features:

CallBeep:Anoptionalcallbeeptonecanbeusedforincomingcallnotification.

Headset Microphone Type Selection: Balanced or unbalanced microphone

may be selected.

DC call enable: This may be turned on to use the intercom station with inter-

com systems that use DC call signaling.

9. Connections Terminal Block: Used to connect intercom channel(s) and an op-

tional local power supply.

10.Sidetone Trimmers: These are used to adjust the level of the station operator’s

own voice in the headphones.

11.Mounting Holes: The mounting holes fit any standard, two-gang electrical box.

* Brand names mentioned are the property of their respective companies.

Installation

Unpacking

Each WM1000 / WM2000 is supplied with the following items. Contact the shipper

or your Audiocom dealer immediately if anything is damaged or missing. Detach and

fill out the registration card and return it to Telex to properly register your intercom

station.

Quantity Description

1 WM1000 or WM2000 Intercom Station

1 Warranty and registration card

1 User Instructions

4 Mounting Screws

Configuration Switch Pre-check

Before making connections, read the configuration switch notes that follow and

make sure that all switches are properly set for your intended usage. Table 1lists the

switch descriptions and factory default settings. Figure 1shows the locations of the

switches.

DC Call Enable (DIP Switch 2)

Leave this switch in the open position for Audiocom applications. Set it to the closed

position if the WM1000 / WM2000 will be used in a Clear-Com intercom system.

Incoming Call Beep (DIP Switch 3)

By default, incoming calls are indicated by a red-flashing Call key and a beep tone in

the headphones. If you do not want the beep tone, set DIP switch 3 to the closed po-

sition.

Headset Microphone Type Selection (DIP Switch 4)

If the headset specifications indicate the microphone type is balanced, or if you are

unsure, leave this switch in the open (default) position. If the specifications indicate

an unbalanced microphone set DIP switch 2 to closedn.

Audiocom®

Balanced/UnbalancedSwitch(SW-1)

This switch is set at the factory to the balanced (BAL) position for use with Audio-

com intercom channels. Set the switch to the unbalanced (UNBAL) position for use

with a Clear-Com intercom system. Be sure and use the appropriate connection in-

formation based on how you have this switch set.

IntercomChannelConnections

Important!

The following paragraphs and illustrations describe installation of the WM1000 /

WM2000 in an Audiocom Intercom System. To use the WM1000 / WM2000 in a

Clear-Com Intercom System, set SW1 to the UNBAL position, set DIP switch 2 to

the Closed position, and connect the Clear-Com channel wires using the Unbalanced

Mode Intercom Channel pin-out information listed in the specifications (page19).

Switch

Number Description Settings

Open=Off; Closed=On Default

Setting

1Not used Don't care Open

2Call signal method Closed: DC

Open: Audiocom Open

3Incoming call beep Closed: Disabled

Open: Enabled Open

4Microphone type Closed: Unbalanced

Open: Balanced Open

5Not used Don’t care Open

6Not used Don’t care Open

7Not used Don’t’ care Open

8Not used Don’t care Open

Table 1. Configuration Switch Settings

General Information

☞After connecting intercom stations as described below, and before installing the

mounting screws, connect a headset and perform the sidetone adjustment as de-

scribed on page 10.

The WM1000 and WM2000 mount in a standard two-gang electrical box. Some ex-

ample intercom system configurations are shown in Figures 2through 5, pages 12

through 14. Detailed connections for the WM1000 and WM2000 are shown in Fig-

ures 6and 7, pages 15 and 16. There are two basic methods for connecting the

WM1000 and WM2000: 1) using a phantom powered connection, and 2) using local

power. The two methods are discussed below:

Method 1: Phantom Powered Connection

In this method, operating power and intercom audio are delivered to the WM1000 /

WM2000 over the same wires. The advantage of this setup is simplicity of connec-

tion. Also, the Audiocom power supply automatically provides what is known as a

terminating impedance for the intercom system. Without this terminating impedance,

the sound quality on the channel will be very distorted, and the levels will shift every

time additional stations are connected to the channel. The disadvantage of the phan-

tom power method is that some operating power is lost over very long intercom ca-

bles, and performance will then be reduced at remotely located stations. Generally, if

the intercom stations are located within a few hundred feet of the power supply,

phantom power will be sufficient. The actual distance over which power can be de-

livered can vary, however, depending on the number of stations connected. Increasing

the number of stations will reduce the distance. Note that the range over which power

can be delivered is independent from the range over which audio can be sent. Audio

can be transmitted for several miles, providing that intercom stations are locally pow-

ered as described below.

Audiocom®

Method 2: Locally Powered Connection

Using this method, the intercom station is connected to the intercom line just like any

phantom-powered intercom station, except that a local power supply is also con-

nected. This local power supply is located right with the intercom station and pro-

vides power for that station only. Since power loss on the intercom lines is no longer

an issue, the operating range is now limited only by the audio transmission range,

which is several miles. Another advantage to this method is that more stations can be

connected to the intercom channels. When local power is supplied to an intercom sta-

tion, the station detects this and automatically disconnects from the phantom power

supply. As long as an Audiocom power supply is located somewhere in the intercom

system, the proper terminating impedance will still be supplied for all stations.

All Locally Powered Intercom Stations (Dry Lines)

If all intercom stations are widely distributed, you can dispense with a main power

supply and use local power for each station. When no power is delivered on the inter-

com channels, this is known as dry-line operation. However, since an Audiocom

power supply is not used, a line termination must be inserted in each intercom chan-

nel for proper operation. Figure 5, page 14 shows an example of dry line operation.

The required termination components are shown in Figure 8, page 16.

Dynamic-Mic Headset Connection

☞For headset specifications, see page 18. For best results in noisy environments, a

noise canceling (directional or cardioid) microphone is highly recommended.

1. Make sure that DIP switch 4 is properly set for balanced or unbalanced micro-

phone. See Table 1, page 7.

2. Plug the headset into the headset connector. Power up the intercom system and

check the sidetone adjustment before placing the station in operation.

Power-Up

Make sure any local power supplies are plugged in, and turn on the power switches

of any phantom power supplies.

☞If you are using a large number of locally powered intercom stations, you should

activate their local power supplies before activating any phantom power supply.

Otherwise, you may get an overload indication on the phantom supply. In this

case, either reset the phantom supply, or momentarily turn it off, then on.

Sidetone Adjustment

The WM1000 and WM2000 use full-duplex audio (the same as conventional tele-

phone lines) in which the talk and listen audio are sent and received on the same

wires. Thus, when you talk on a channel, you will also here your own voice back in

the headphones. If you are using open-ear style headphones, this could cause un-

wanted feedback, since the microphone may pick up your returned voice audio and

re-amplify it. On the other hand, if you are using headphones that completely enclose

the ears, a certain amount of your own voice level is desirable to overcome the muf-

fled sensation when talking. The sidetone adjustment is different for these two situa-

tions.

If you are using open-ear style headphones, adjust sidetone as follows:

1. Activate channel 1 as described in the operating instructions. (Required only for

the WM2000, the WM1000 is active on whichever channel it is connected to.)

2. Activate talk and listen as described in the operating instructions.

3. Slowly increase the volume to maximum while talking into the microphone.

4. Using a small flat-bladed screwdriver, adjust the channel 1 sidetone trimmer (Fig-

ure 1) to minimize your voice level in the headphones.

5. For the WM2000 only, activate channel 2 and repeat the above steps to adjust

the channel 2 sidetone.

Audiocom®

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