Telex Audiocom US2000A User Instructions
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Telex Audiocom US2000A User Instructions

Telex Audiocom US2000A User Instructions

Intercom user station
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Summary of Contents for Telex Audiocom US2000A

  • Page 1 ® Telex User Instructions ® l u m Model US2000A Intercom User Station ® Audiocom Intercom Systems ®...
  • Page 2 FCC Statement This equipment uses and can radiate radio frequency energy that may cause interfer- ence 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 comput- ing device pursuant to Subpart J, Part 15 of FCC Rules which are designed to pro- vide reasonable protection against such interference when operated in a commercial environment.

  • Page 3: Table Of Contents

    Table of Contents Description . Features . Installation . Unpacking Configuration Pre-check Mounting Configurations . Connections. Cables . Power-Up Check Test Tone . Sidetone Adjustment . Voice-Activated Microphone (Vox) Setup Operation . Normal vs Programming Mode Volume Adjustment . Receiving Calls . Calling an Intercom Channel .

  • Page 4: Description

    Description The US2000A Intercom User Station is designed for stationary use by personnel who may require selective access to two or more intercom channels. It can be rack mounted or used as a desktop station. For rack mounting, optional hardware is re- quired.

  • Page 5: Features

    2. Panel Mic / Electret-mic Headset Connector: Accepts an electret gooseneck microphone, such as the Telex Model EGM-12N or EGM-18N, or a monaural, electret-mic headset. 3. Volume Control: Adjusts headphone volume only. If an external speaker is used, volume is adjusted at the speaker.

  • Page 6: Installation

    The package contains the following items. Contact the shipper or your Audiocom dealer immediately if anything is damaged or missing. Detach and fill out the regis- tration card and return it to Telex to properly register your US2000A. Quantity US2000A Intercom Station...
  • Page 7 Table 1. Configuration Switch Settings Switch Description Number DIP Switch SW1 (Internal) SW1-1 Headset microphone type SW1-2 Call signal send, channel 1 SW1-3 Call signal receive, channel 1 SW1-4 Call signal send, channel 2 SW1-5 Call signal receive, channel 2 SW1-6 Mic kill signal send SW1-7...
  • Page 8 Headset Microphone Type Selection DIP Switch SW1-1 applies only to a dynamic-mic headset connected to the dynamic-mic headset jack on the front panel. If the headset specifications indicate the microphone type is balanced, or if you are unsure, leave this switch in the off (default) position. If the specifications indicate an unbalanced microphone set SW1-1 to on.
  • Page 9 1. Make sure the call signal receive DIP switches are on (SW1-3 and SW1-5). 2. For incoming call beep in a headset, set SW3-1 to off. 3. For incoming call beep in speaker 1, set SW3-1 to off and SW3-3 to on. 4.
  • Page 10 Balanced/Unbalanced Switch (SW2) 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. Direct Program Listen Enable / Disable Jumpers By default, each US2000A program input can be heard by all intercom stations that are listening on the corresponding intercom channel.

  • Page 11: Mounting Configurations

    Mounting Configurations The US2000A can be used on a desktop, or it can be rack mounted. For desktop use, install the 4 rubber feet supplied with the US2000A. For rack mounting, use optional Audiocom RMK Rack Mount Kits (Figure 3). You will have to perform the sidetone adjustment (page 27) after all compo- nents are connected.

  • Page 12: Connections

    Connections Central Master Station vs Remote Station The US2000A can be used in a variety of configurations as a speaker station or as a headset station. Additionally, it can be used as a central master station or as a remote station.

  • Page 13: Cables

    ME-50/2: 50' (15.2 m) cable with Male and Female 6-pin XLR connectors. ME-100/2: 100' (30.4 m) cable with Male and Female 6-pin XLR connectors. Y adapter cable. Sold separately. Use Telex CA-23-16. Or, build per Figure 15, page 26. 3 ft (0.91 m) speaker cable with RCA plugs. One supplied with each SPS2000A, SPK-1000, and SPK-2000.
  • Page 14 Shielded patch cable, 9-pin Male Dsub to 9-pin Female Dsub. Customer local purchase: available at Radio Shack, etc. Note: All pins must be connected straight through: do not use an RS232 computer cable! Shielded patch cable, stereo miniplug to stereo miniplug. Customer local pur- chase.
  • Page 15 EGM MIC FRONT VIEW TYPICAL RACK-MOUNT SETUP US2000A BACK VIEW FOR DAISY-CHAIN CONNECTION PS-L (OPTIONAL) BACK VIEW FOR HOME-RUN CONNECTION CH 1 PS-L (OPTIONAL) TW-7W CH 1 TO ADDITIONAL INTERCOM STATIONS Figure 4. US2000A Monaural Master Speaker Station Configuration with 1 Power Supply.
  • Page 16 EGM MIC TYPICAL RACK-MOUNT SETUP SPK-2000 US2000A BACK VIEW FOR DAISY-CHAIN CONNECTION PS-L (OPTIONAL) CH 1 TO ADDITIONAL INTERCOM STATIONS BACK VIEW FOR HOME-RUN CONNECTION PS-L (OPTIONAL) TW-7W CH 1 TO ADDITIONAL INTERCOM STATIONS Figure 5. US2000A Binaural Master Speaker Station Configuration with 1 Power Supply.
  • Page 17 US2000A BACK VIEW FOR DAISY-CHAIN CONNECTION PS-L (OPTIONAL) Note: For further infor- mation about the cable numbers, see page 13. BACK VIEW FOR HOME-RUN CONNECTION * KEEP CABLES FROM POWER SUPPLY TO TW-7W AS SHORT AS POSSIBLE. TW-7W (CH1) Note: A BOP-1000 may be used to rack mount 2 TW-7W splitters.
  • Page 18 EGM MIC TYPICAL RACK-MOUNT SETUP PS2000L (CH 2 POWER) US2000A BACK VIEW FOR DAISY-CHAIN CONNECTION PS-L (OPTIONAL) CH 1 CH 1 TO ADDITIONAL INTERCOM STATIONS BACK VIEW FOR HOME-RUN CONNECTION PS-L 1* 1 (OPTIONAL) TW-7W 1/2 CH 1 TO ADDITIONAL INTERCOM STATIONS TW-7W 1/2 CH 1 TO ADDITIONAL INTERCOM STATIONS...
  • Page 19 EGM MIC TYPICAL RACK-MOUNT SETUP SPS2000A (CH 2 POWER) US2000A BACK VIEW FOR DAISY-CHAIN CONNECTION PS-L (OPTIONAL) CH 1 CH 1 TO ADDITIONAL INTERCOM STATIONS BACK VIEW FOR HOME-RUN CONNECTION PS-L (OPTIONAL) TW-7W 1/2 CH 1 TW-7W 1/2 CH 1 TO ADDITIONAL INTERCOM STATIONS Figure 8.
  • Page 20 FRONT VIEW TYPICAL RACK-MOUNT SETUP PS2000L (CH 2 POWER) US2000A BACK VIEW FOR DAISY-CHAIN CONNECTION PS-L (OPTIONAL) CH 1 CH 1 TO ADDITIONAL INTERCOM STATIONS BACK VIEW FOR HOME-RUN CONNECTION PS-L (OPTIONAL) TW-7W 1/2 CH 1 TW-7W 1/2 CH 1 TO ADDITIONAL INTERCOM STATIONS Figure 9.
  • Page 21 BACK VIEW FOR DAISY-CHAIN CONNECTION FROM PREVIOUS INTERCOM STATION Note: For further infor- mation about the cable numbers, see page 13. PS-L (OPTIONAL) BACK VIEW FOR HOME-RUN CONNECTION FROM TW-7W SPLITTERS LOCATED NEAR SYSTEM POWER SUPPLY PS-L (OPTIONAL) Figure 10. Typical Remote Headset Station. In this example, the US2000A is not located near the system power supplies (SPS2000A, PS2000L etc.).
  • Page 22 EGM MIC FRONT VIEW US2000A BACK VIEW FOR DAISY-CHAIN CONNECTION FROM PREVIOUS INTERCOM STATION PS-L (OPTIONAL) BACK VIEW FOR HOME-RUN CONNECTION FROM TW-7W SPLITTERS LOCATED NEAR SYSTEM POWER SUPPLY PS-L PS-L (OPTIONAL) Figure 11. Typical Remote Monaural Speaker Station. This example is similar to the one on the previous page, except an EGM microphone and an SPK-2000 speaker are used instead of a headset.
  • Page 23 EGM MIC SPK-2000 BACK VIEW FOR DAISY-CHAIN CONNECTION FROM PREVIOUS INTERCOM STATION PS-L PS-L (OPTIONAL) BACK VIEW FOR HOME-RUN CONNECTION FROM TW-7W SPLITTERS LOCATED NEAR SYSTEM POWER SUPPLY PS-L PS-L (OPTIONAL) Figure 12. Typical Remote Binaural Speaker Station. This example is similar to the one on the previous page, except that each channel is heard in a separate speaker.
  • Page 24 Note: For further information about the cable numbers, see page 13. SPK2000 PS-L SPK2000 PS-L SPK2000 PS-L Figure 13. An example of all locally powered US2000A intercom stations. In this example, all components are locally powered using PS-L local power supplies. Note the use of one termination plug in each intercom channel.
  • Page 25 2 IN 1 IN FRONT CH 1-2 XP-USPG BACK Figure 14. External Audio Input and PA Output. You can connect two audio sources to the Program Inputs connector: one for each channel. Audio sources can be directly connected with a user-supplied DB9M connector. (Refer to the program input connector specifications, located on page 35, for connector pin-out.) However, a more convenient method is to use an XP-USPG Breakout Panel as shown.
  • Page 26 TYPICAL 1-CHANNEL CABLE WIRING Pair 1 Pair 2 Shield Cable Type: 22AWG Stranded, 2-Pair Twisted-wire, with Shield Connector Type: 3-Pin XLR Audio (Neutrik or Switchcraft) Pin 1: Common Pin 2: Channel Audio / Power Pin 3: Channel Audio / Power Shield : Earth ground TYPICAL 2-CHANNEL CABLE WIRING...

  • Page 27: Power-Up Check

    Power-Up Check Plug in any PS-L local power supplies that are being used, and also turn on any sys- tem power supplies that are being used. When power is first applied to the US2000A, it will perform a power-up reset, in which the front panel indicators will cycle through all of their possible colors and then turn off.
  • Page 28 the amount of sidetone. On the other hand, if you are using headphones that com- pletely enclose the ears, a certain amount of your own voice level is desirable to overcome the muffled sensation when talking. If you are using a speaker and microphone, or open-ear style headphones, ad- just sidetone as follows: Simultaneously press the All Talk and PA keys to activate the test tone.

  • Page 29: Voice-Activated Microphone (Vox) Setup

    Figure 16. US2000A Bottom View Voice-Activated Microphone (Vox) Setup If you are going to use vox, you must adjust the vox level for proper operation. If the vox level is too low, room noise will activate the microphone. If the vox level is too high, the microphone will not activate when you begin talking.
  • Page 30 (mic off). If you are wearing a headset, make sure that breathing and movement do not cause the Panel Mic key to flicker green. If they do, adjust the vox con- trol slightly more in the counterclockwise direction to eliminate this. Speak into the microphone in a normal voice, and check that the headset key im- mediately turns green when you talk.

  • Page 31: Operation

    Operation A quick-reference to the following operating features can be found on the inside of the back cover. Normal vs Programming Mode The US2000A has two operating modes: normal operating mode and programming mode. In normal operating mode, the Mic Kill key will be unlit, and in programming mode it will be lit continuously.

  • Page 32: Calling An Intercom Channel

    momentary activation, press and hold the key. It will remain on as long as you hold it and it will turn off when you release it. Calling an Intercom Channel Press and hold the Call key for the channel that you want to call. An inaudible call signal will be sent, and your listen key for that channel will automatically turn on in preparation to receive a verbal response.

  • Page 33: Public Address (Pa)

    Public Address (PA) If the PA output on the back panel of the US2000A is connected to a public address system, you can talk on the public address system as follows: 1. If you are using manual microphone activation, make sure the proper micro- phone switch is turned on (either Headset or Panel Mic).

  • Page 34: Using Voice-Activated Microphone (Vox)

    Tap the Talk or Listen key for a channel to turn off all talk keys on that channel. Or, tap the All Talk key to turn off all talk keys. The key you tap will turn green and the Mic Kill signal will be sent. Tap Mic Kill to exit.

  • Page 35: Specifications

    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: 1.75" (44.5 mm) high x 8.25" (209.5 mm) wide x 10.31" (261.9 mm) deep Weight: approximately 2lb (0.9 kg) Environmental Requirements: Storage: -20°C to 80°C;...
  • Page 36 Intercom Channels, Balanced Mode (SW2 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 Frequency: Send: 24 kHz ±300 Hz, 0.5 Vrms ±10%...
  • Page 37 External Power Type: 2.0 mm power jack Internal pin: positive (+) External shell: negative (-) Headphone Amplifier Voltage Gain: 30 ±3 dB Maximum Output: 250 mW ±10% into 150 ohms, 65 mW±10% into 600 ohms Frequency Response: 200 Hz to 8 kHz +1/-3db Incoming Call Beep Tone: 2 kHz, at the headphones Total Harmonic Distortion: Less than 0.2% at 200 mW Sidetone: 18 ±2 dB, adjustable...

  • Page 38: Factory Service And Parts Information

    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 col- lect basis.

  • Page 39: Quick Reference

    Quick Reference Reset US2000A Press All Talk and Listen 1 Reset ES4000A Press All Talk 4 and Listen 5 Test signal on Press All Talk and PA, then tap Call Test signal off Tap Call, then tap any other key Mic latched on Tap Headset or Panel Mic (key is green) Mic latched off...
  • Page 40 ® TELEX COMMUNICATIONS, INC. 9600 Aldrich Ave. So., Minneapolis, MN 55420 U.S.A. 9350-7550-000 Rev. B , 2/99...

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