User Instructions Model MS-2002 Master Station and Power Supply Audiocom® Intercom Systems 9350-7749-000 Rev B, 10/2003 1
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.
Contents Description .............................................................................................................. 4 Features ................................................................................................................... 4 Installation............................................................................................................... 6 Unpacking ...................................................................................................................
Description The MS-2002 is a complete 2-channel master station and system power supply (24 V DC, 2 Amps total power) in a single unit. You simply plug it into any AC power outlet from 100 to 240 volts, add a microphone or headset, connect intercom stations to the back panel, and you’re ready to communicate. It even has both 1-channel and 2-channel connectors, so you don’t have to add a separate breakout box if you want to mix 1-channel and 2-channel intercom stations.
10. CALL KEYS: Used to place calls on intercom channels and to indicate incoming calls. 11. INTERCOM LISTEN KEYS: Momentary or latching operation possible. 12. SPEAKER VOLUME CONTROL: The Volume control adjusts the level to the front panel speaker. If an external speaker is used, volume must be adjusted at the external speaker. 13.
Installation Unpacking 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 registration card and return it to Telex to properly register your MS-2002. Qty De s cr ipt ion 1 MS- 2002 Master Station and Power Station 1 Warranty and Registration Card 1 User Manual 2 Black Face Plates WARNING The following instructions are for use by qualified personnel only.
SW3 R601 J6 Figure 2 - Locations of Configuration Jumpers and Switches Swit ch # De s cr ipt ion Se t t ings De fa ult DIP SWITCH SW1 (INTERNAL) Headset microphone type On: Unbalanced Off: Balanced (Typical) Off SW1- 2 Call signal send, channel 1 On: Enabled Off: Disabled On SW1- 3 Call signal receive, channel 1 On: Enabled Off: Disabled On Call signal send, channel 2 On: Enabled Off: Disabled On SW1- 5 Call signal receive, channel 2 On: Enabled Off: Disabled On SW1- 6 Mic kill sig
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. Note: For best results in noisy environments, a noise canceling (directional or cardioid) micro phone is highly recommended.
For binaural operation with two speakers: 1. Set SW3-2 to on. 2. Set SW3-5 to off. 3. Set SW3-6 to on. 4. Set SW3-7 to off. 5. Set SW3-8 to off. Balanced/Unbalanced Switches Both of the BAL - UNBAL Switches on the back panel are set at the factory to the balanced (BAL) position for use with Audiocom intercom channels. Set the switches to the unbalanced (UNBAL) position for use with a Clear-Com intercom systems.
Cables The numbers below correspond to the cable numbers in the connection drawings on the following pages. 1. 1-channel intercom cable. Sold separately. Use Telex “ME” cables, below. Or, build per Figure 7, page 14. ME-25: 25' (7.6 m) cable with Male and Female 3-pin XLR connectors. ME-50: 50' (15.2 m) cable with Male and Female 3-pin XLR connectors. ME-100: 100' (30.4 m) cable with Male and Female 3-pin XLR connectors. ☞ When connecting from the MS-2002 to a TW-7W, keep cables as short as possible.
Figure 3 - MS-2002 Monaural Master Speaker Station Configuration. This is a good configuration for smaller intercom systems when you want to operate the MS-2002 as a master speaker station, with one speaker to monitor both intercom channels. In this configuration, the Combine/Isolate switch is set to the Isolate position. With this setting the 2 intercom channels are completely separated. The MS-2002 dip switches are set to monaural operation so that both intercom channels are heard in the speaker.
Figure 4 - MS-2002 Binaural Master Speaker Station Configuration. This is a good configuration for smaller intercom systems when you want to operate the MS-2002 as a master speaker station, with a separate speaker for each intercom channel. Make sure the MS-2002 internal DIP switches are set for binaural speaker operation as described on page 7. Also, set the Combine/Isolate switch to the Isolate position. With this setting the two intercom channesl are completely separated.
Figure 5 - MS-2002 typical Speaker Station and Belt Pack Connections. Typically, a headset is connected to the front panel of the MS-2002, and the DIP switches are set to the monaural operation (default setting) so that both intercom channels as heard in the monaural headphones (binaural headphone operation is not supported). Note that belt packs use less power than speaker stations, and you can daisy-chain more of them on a signle cable run. Avoid very long cable runs with daisy-chained speaker stations.
Figure 6 - 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 20, for connector pin-out.) However, a more convenient method is to use an XP-USPG Breakout Panel as shown. The XP-USPG also interfaces the PA jack of the MS-2002 to a standard , 2-pin XLR audio cable.
TYPICAL 1-CHANNEL CABLE WIRING 3 2 Pair 1 3 2 1 Pair 2 1 (Both wires) Shield Shield Cable Type: 22AWG Stranded, 2-Pair Twisted-wire, with Shield Connector Type: 3-Pin XLR Audio (Neutrik or Switchcraft)* Pin 1: Common Denotes twisted pair. Pin 2: Channel Audio / Power Pin 3: Channel Audio / Power Denotes shield.
Power-Up Check Plug in the MS-2002. When power is first applied to the MS-2002, 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. This verifies the general operation of the intercom station and indicators. The MS-2002 also reads the settings of all DIP switches at this time and configures itself accordingly.
Figure 8 - MS-2002 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. Check and set the level as follows: 1. If you are using a headset, tap the Headset key twice to turn on headset Vox.
VOLUME ADJUSTMENT If you are using a headset, adjust the intercom listen level with the left Volume control on the front panel of the MS-2002. If you are using a speaker, adjust the intercom listen level with the right Volume control next to the speaker. External speakers will require their own volume controls RECEIVING CALLS 1. 2. When there is an incoming call signal on a channel, the Call key for that channel will flash red. There will also be a beep tone if the beep feature has been activated (page 7).
Public Address (PA) If the PA output on the back panel of the MS-2002 is connected to a public address system, you can talk on the public address system as follows: 1. 2. If you are using manual microphone activation instead of Vox, make sure the proper microphone switch is turned on (either Headset or Panel Mic). Press and hold the PA key while talking. Release it when finished. Note: To insure that the PA key is never accidentally left in the on position, it does not have latching operation.
Specifications General Power Requirements: AC Input: 100-240 VAC, 50/60 Hz Channel Power: 24 VDC nominal (12 to 30 VDC), 65 to 150 mA MS2002 is capable of supplying 2 amps overall Dimensions: 1.75" (44.5 mm) high x 19" (483 mm) wide x 10.31" (261.9 mm) deep Weight: approximately 4.
Intercom Channels, Balanced Mode (Both Back Panel and internal switches (BAL/ UNBAL) must be set to same setting) 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% eceive: 20 kHz ±800 Hz, 100 mVrms Mic-Kill Frequency: Send: 24 kHz ±300 Hz, 0.
XLR-3 Unbalanced Configuration Pinouts Pin 1: Common Pin 2: +24 VDC input Pin 3: Intercom audio high XLR-6 Unbalanced Configuration Pinouts 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 PA Output Output Level: 235 mVrms nominal Connector Type: 1/8-inch Stereo Phone Jack Tip: PA output high Ring: Not used Sleeve: Common Speaker Output
Quick Reference D E SCR IPTION AC TION Reset MS- 2002 Press All Talk and Listen 1 Reset EMS4001 Press All Talk 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 Tap Headset or Panel Mic Mic momentary on Hold Headset or Panel Mic Mic momentary off Release Headset or Panel Mic VO X mode on Tap twice: Headset or Panel Mic (key is orange) VO X mode off Tap
