Telex Intercom System Wm1000 Users Manual / WM2000 User Instructions
WM1000, WM2000 WM1000, WM2000
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Telex® User Instructions WM 200 TM 0 GR RE N 1 D2 Ch Se Lis ten lec t Ca ll Talk Vo lu me He ad se t WM2000 Shown Model WM1000 / WM2000 Wall Mount Intercom Stations Audiocom ® Intercom Systems ® FCC Statement This equipment uses and can radiate radio frequency energy that may cause interference to radio communications if not installed in accordance with this manual. 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 operated 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 Intercom 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. 2 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 . . . . . . . . . . 10 . . . . . . . . . . 17 Channel Select (WM2000 Only) . . . . . . . . 17 Receiving Calls Sidetone Adjustment Operation . . . . . . . . . . . . 17 Calling an Intercom Channel . . . . . . . . 17 . . . . . . . . 18 . . . . . . . 20 Specifications . . . . . . Factory Service and Parts Information 3 Audiocom® Description The WM1000 and WM2000 Intercom Stations are designed for stationary, wallmounted 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 access 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 telephone handset can be left at the station. 9 TOP 8 CLOSED (ON) DIP SWITCH POSITIONS OPEN (OFF) FRONT 11 (4 Places) TM Listen WM2000 Call GRN 1 RED 2 Ch Select Talk 1 6 2 3 4 5 Volume Headset BACK 9 Ch 2 10 Ch 1 7 SW1 Figure 1. Reference view, WM2000 shown (See numbered features list) 4 Features 1. Channel Select Switch (WM2000 Only): Used to switch between intercom channels one and two. The switch lights green for channel one and red for channel two. 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 incoming 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 microphone. 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 following features: Call Beep: An optional call beep tone can be used for incoming call notification. 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 intercom systems that use DC call signaling. 9. Connections Terminal Block: Used to connect intercom channel(s) and an optional 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. 5 Audiocom® 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 1 1 1 4 Description WM1000 or WM2000 Intercom Station Warranty and registration card User Instructions 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 1 lists the switch descriptions and factory default settings. Figure 1 shows 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 position. 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. 6 Table 1. Configuration Switch Settings Switch Number 1 Description Settings Open=Off; Closed=On Default Setting Not used Don't care Open 2 Call signal method Closed: DC Open: Audiocom Open 3 Incoming call beep Closed: Disabled Open: Enabled Open 4 Microphone type Closed: Unbalanced Open: Balanced Open 5 Not used Don’t care Open 6 Not used Don’t care Open 7 Not used Don’t’ care Open 8 Not used Don’t care Open Balanced/Unbalanced Switch (SW-1) This switch is set at the factory to the balanced (BAL) position for use with Audiocom 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 information based on how you have this switch set. Intercom Channel Connections 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 (page 19). 7 Audiocom® General Information ☞ After connecting intercom stations as described below, and before installing the mounting screws, connect a headset and perform the sidetone adjustment as described on page 10. The WM1000 and WM2000 mount in a standard two-gang electrical box. Some example intercom system configurations are shown in Figures 2 through 5, pages 12 through 14. Detailed connections for the WM1000 and WM2000 are shown in Figures 6 and 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 connection. 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 phantom power method is that some operating power is lost over very long intercom cables, 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 delivered 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 powered as described below. 8 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 connected. This local power supply is located right with the intercom station and provides 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 station, 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 intercom 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 channel 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 microphone. 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. 9 Audiocom® 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 telephone 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 unwanted 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 muffled sensation when talking. The sidetone adjustment is different for these two situations. 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 (Figure 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. 10 6. Install the intercom station mounting screws after completing the adjustments. The station is now ready for use. If you are using headphones that completely enclose the ears, 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. Set the volume control to the normal listening level for intercom audio. 4. While talking into the microphone, use a small flat-bladed screwdriver to adjust the channel 1 sidetone trimmer (Figure 1) so that you can hear your own voice in the headphones at an acceptable level. 5. For the WM2000 only, activate channel 2 and repeat the above steps to adjust the channel 2 sidetone. 6. Install the intercom station mounting screws after completing the adjustments. The station is now ready for use. 11 Audiocom® 500 METERS Audiocom Audiocom Listen WM2000 Ch Select Volume Audiocom Listen WM2000 Call GRN 1 RED 2 Listen WM1000 Call Call GRN 1 RED 2 Talk Ch Select Volume Headset WM2000 Talk Talk Volume Headset Headset WM1000 WM2000 LOCAL POWER 12 to 15 VDC, 65 to 150 mA Audiocom Audiocom Listen WM2000 Ch Select Volume Audiocom Listen WM1000 Call GRN 1 RED 2 Listen WM2000 Call Talk Call GRN 1 RED 2 Talk Volume Headset WM2000 Ch Select Volume Headset Talk Headset PS2000L WM2000 WM1000 L 00 20 PS T 1 SE RE 2 R Figure 2. A two-channel intercom system using one PS2000L Power Supply set to isolate mode. In isolate mode, each intercom channel is a separate party line, and total current for each channel is limited to 1 amp. Note that both WM1000 and WM2000 stations may be connected, depending on each locations’ need to communicate with one or two channels. WM1000 stations may be connected to either channel one or two. Also note that locally powered stations may be connected. This is recommended when stations are installed at remote locations. Since the PS2000L provides termination for the intercom channels, no user-installed termination is required. For WM1000 connection details refer to Figure 6; for the WM2000, refer to Figure 7 Audiocom Listen WM1000 Audiocom Listen WM1000 Call Volume Audiocom Call Talk Volume Headset WM1000 Listen WM1000 Call Talk Talk Volume Headset WM1000 Headset WM1000 WM1000 WM1000 WM1000 Audiocom Audiocom Audiocom L 00 20 PS Listen WM1000 Listen WM1000 Call 1 Talk SET RE Listen WM1000 2 Call Call Talk Talk R Volume Headset Volume Headset Volume Headset Figure 3. A single-channel intercom system using one PS2000L with WM1000 Intercom Stations. The PS2000L may be set to either combine or isolated mode. In combine mode, all intercom stations talk on a single party line, and total current for the channel is 2 amps. In isolate mode, one string of intercom stations is operated as channel one, and the other string is operated as channel two. There is no communication between the separate channels, and the total current per channel is 1 amp. For WM1000 connection details, refer to Figure 6. 12 Audiocom Ch Select Audiocom Listen WM2000 GRN 1 RED 2 Volume WM2000 WM2000 Audiocom Ch Select Volume WM2000 WM2000 Audiocom Listen Audiocom Volume Volume MADE IN USA Audiocom Talk Headset Listen WM2000 Ch Select Volume Headset PS2000L Audiocom Volume Headset WM1000 WM2000 WM2000 Listen WM2000 Ch Select Volume Talk Headset MADE IN USA Headset WM2000 Audiocom CHN 2 CLASS 2 WIRING 1.5A 24VDC Talk WM2000 GRN 1 RED 2 CHN 1 Listen WM1000 Talk WM2000 Listen WM2000 Ch Select CHN 2 CLASS 2 WIRING 1.5A 24VDC Headset Audiocom GRN 1 RED 2 Talk Volume Headset 100-240 VAC 60/50 HZ CHN 1 GRN 1 RED 2 Talk Ch Select CHANNEL 2 Listen WM2000 Ch Select Listen WM2000 GRN 1 RED 2 Talk CHANNEL 1 GRN 1 RED 2 Headset WM1000 WM1000 PS2000L Talk WM2000 Volume 100-240 VAC 60/50 HZ Ch Select Volume Headset Talk Headset Listen WM2000 GRN 1 RED 2 Talk Audiocom Listen WM2000 GRN 1 RED 2 Ch Select Volume Headset Audiocom Listen WM2000 GRN 1 RED 2 Talk Audiocom Listen WM2000 GRN 1 RED 2 Ch Select Volume Talk Headset Figure 4. A two-channel intercom system using two PS2000L power supplies. Each PS2000L is set to combine mode and it supplies power to one intercom channel only. Each intercom channel is a separate party line, and total current for each channel is limited to 2 amps. Note that both WM1000 and WM2000 Intercom Stations may be connected, depending on each locations’ need to communicate with one or two intercom channels. For WM1000 connection details refer to Figure 6; for the WM2000 refer to Figure 7. 13 Audiocom® Audiocom Listen WM1000 Audiocom Volume Ch Select Volume WM1000 Audiocom Listen WM2000 Call GRN 1 RED 2 Headset Listen WM2000 Call Talk Call GRN 1 RED 2 Talk Ch Select Volume Headset WM2000 Talk Headset WM2000 LOCAL POWER 12 to 15 VDC, 65 to 150 mA LOCAL POWER 12 to 15 VDC, 65 to 150 mA LOCAL POWER 12 to 15 VDC, 65 to 150 mA LINE TERMINATION Audiocom Listen WM2000 Audiocom Listen WM1000 Ch Select Volume WM2000 LOCAL POWER 12 to 15 VDC, 65 to 150 mA Volume Headset Call Ch Select Volume WM1000 LOCAL POWER 12 to 15 VDC, 65 to 150 mA Listen WM2000 GRN 1 RED 2 Talk Talk Headset Audiocom Call Call GRN 1 RED 2 Talk Headset WM2000 LOCAL POWER 12 to 15 VDC, 65 to 150 mA Figure 5. An example of an intercom system using all local powered stations, with no power being distributed on the intercom channels (dry lines). WM2000 stations are shown, but WM1000 stations may also be used. Since an Audiocom power supply is not used, the installer must connect a line termination somewhere in each channel for proper operation. The required line termination is shown in Figure 8. 14 TO ADDITIONAL SINGLE-CHANNEL STATIONS TO POWER SUPPLY CONNECTOR Pair 1 Channel Audio high / Power Channel Audio low / Power Pair 2 DC Common Shield* Shield* PIN 1 OPTIONAL LOCAL POWER SOURCE 12 to 15 VDC, 65 to 150 mA + DC COMMON Cable Type: 22AWG Stranded, 2-Pair Twisted-wire, with Shield Denotes twisted pair. Denotes shield. *Shield: Earth ground (Connect at power supply only. Do not short to DC common) Figure 6. Audiocom mode connections for a WM1000 Intercom Station 15 Audiocom® TO ADDITIONAL SINGLE- OR TWO-CHANNEL STATIONS TO POWER SUPPLY CONNECTOR Channel 2 Audio low / Power Channel 2 Audio high / Power Channel 1 Audio low / Power Channel 1 Audio high / Power Pair Pair DC Common Pair Shield* Shield* PIN 1 OPTIONAL LOCAL POWER SOURCE 12 to 15 VDC, 65 to 150 mA + DC COMMON Cable Type: 22AWG Stranded, 3-Pair Twisted-wire, with Shield Denotes twisted pair. Denotes shield. *Shield: Earth ground (Connect at power supply only. Do not short to DC common) Figure 7. Audiocom mode connections for a WM2000 Intercom Station Channel audio low Channel audio high Resistors 300 Ohm, 1/4W Capacitors 22 µf, 35V Non-polarized Electrolytic Common Figure 8. Audiocom mode line termination for dry-line operation. (One required for each channel.) 16 Operation Channel Select (WM2000 Only) Tap the Ch Select key to select channel 1 or 2. The key is green when channel 1 is selected and red when channel two is selected. Receiving Calls 1. When there is an incoming call signal the Call key will flash red. There will also be a beep tone in the headphones if the beep feature is activated (page 6). ☞ WM2000 only: incoming call indication is provided only for the currently selected channel. 2. Turn on the Talk and Listen keys and begin your conversation. Turn the keys off when finished. ☞ You can turn the talk and listen keys on in either momentary or latched mode. For momentary operation, press and hold the key. For latched operation, tap the key to turn it on. Then tap it again to turn it off when finished. Calling an Intercom Channel 1. WM2000 only: select the desired intercom channel. 2. Press and hold the Call key. An inaudible call signal will be sent, and the Listen key will automatically turn on. 3. When you hear a response, release the Call key and activate the talk key. 4. Turn off your Talk and Listen keys to end the conversation. 17 Audiocom® Specifications General Power Requirements: Phantom Power: 24 VDC nominal (12 to 30 VDC), 65 to 150 mA Local Power: 12 to 15 VDC, 65 to 150 mA Dimensions: Mounts in standard two-gang electrical box Environmental Requirements: Storage: -20°C to 80°C; 0% to 95% humidity, non-condensing Operating: -15°C to 60°C; 0% to 95% humidity, non-condensing Dynamic-mic Headset Microphone: 50 to 200 ohm, dynamic (balanced or unbalanced) Headphones: 150 to 600 ohm, monaural Connector Type: XLR-4M Pin 1 Microphone low Pin 2 Microphone high Pin 3 Headphone high Pin 4 Headphone low Intercom Channels, Balanced Mode (SW1 set to BAL position) Output Level: 1 Vrms nominal Input Impedance: 300 ohms Bridging Impedance: greater than 10,000 ohms Sidetone: -40 dB, 35 dB adjustable range Call Signaling: Send: 20 kHz ±100 Hz, 0.5 Vrms ±10% Receive: 20 kHz ±800 Hz, 100 mVrms Mic-Kill Detect Frequency: 24 kHz ±800 Hz, 100 mVrms Noise Contribution: less than -70 dB Common Mode Rejection Ratio: greater than 50 dB Connector Type: Six-position terminal block with screw-in wire clamps 18 Pin 1 Audio and DC Common Pin 2 Local power (12 to 15 VDC, 65 to 150 mA) Pin 3 Intercom channel 1 audio low and +24 VDC phantom power Pin 4 Intercom channel 1 audio high and +24 VDC phantom power Pin 5 Intercom channel 2 audio low and +24 VDC phantom power Pin 6 Intercom channel 2 audio high and +24 VDC phantom power Intercom Channel, Unbalanced Mode (SW1 set to UNBAL position) Output Level: 1 Vrms ±10% Input Impedance: 150 ohms Bridging Impedance: greater than 10,000 ohms Call Signaling: Send: 11 ±3 VDC Receive: 4 VDC minimum Connector Type: Six-position terminal block with screw-in wire clamps Pin 1 Common Pin 2 Local power (12 to 15 VDC, 65 to 150 mA) Pin 3 Channel 1 +24 VDC input Pin 4 Channel 1 Intercom audio high and DC call Pin 5 Channel 2 +24 VDC input Pin 6 Channel 2 Intercom audio high and DC call 19 Audiocom® Factory Service and Parts Information When returning equipment for repair include your return address, telephone number and proof of date of purchase, along with a description of the problem.* The address for Audiocom equipment returns and parts information is: Service Department Telex Communications, Inc. West 1st Street Blue Earth, Minnesota 56013 U.S.A. Telephone: (507) 526-3205 (Collect calls not accepted) Warranty Repairs - If in warranty, no charge will be made for the repairs. Equipment returned for warranty repair must be sent prepaid and will be returned prepaid. Non-Warranty Repairs - Equipment that is not under warranty must be sent prepaid to Telex. If requested, an estimate of repair costs will be issued prior to service. After your approval and completion of the repairs, the equipment will be returned on a collect basis. Collect charges may be avoided by sending a signed check for payment in full along with your signed estimate approval form (shipping charges are included in the estimate). * For sales / technical support and system design contact: Pro Audio Sales Department Telex Communications, Inc. 9600 Aldrich Avenue South Minneapolis, Minnesota 55420 U.S.A. Telephone: (612) 884-4051 (Collect calls not accepted) 20 Notes 21 Audiocom® Notes 22 Notes 23 ® TELEX COMMUNICATIONS, INC. 9350-7621-000 Rev. C, 10/98 9600 Aldrich Ave. So., Minneapolis, MN 55420 U.S.A.
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