Clear-Com RS-703 Two-Channel Intercom Wired Beltpack User Manual

1. Introduction

The Clear-Com RS-703 is a robust two-channel analog beltpack designed for professional intercom communication. It features an XLR-3 line connector and an XLR-4M headset connector, providing versatile connectivity. Engineered with a high-dynamic-range mic preamp, the RS-703 ensures clear and intelligible voice communication across various volume levels, from quiet whispers to loud shouts. Its advanced audio processing, including high headroom, low noise, and Clear-Com's signature shaped frequency contour, delivers crystal-clear audio performance.

This manual provides essential information for the proper setup, operation, maintenance, and troubleshooting of your RS-703 beltpack.

Figure 1.1: Clear-Com RS-703 Beltpack Side View. This image shows the side profile of the RS-703 beltpack, highlighting its compact and durable design, suitable for on-location use.

2. Key Features

Visual LED Indication: Features LEDs on the top keypad for Power (green), Call Signal (amber), and Talk Latch (green) for quick status checks.
Tactile Controls: Equipped with responsive tactile buttons for Call and Talk functions.
Volume Control: Includes a recessed rotary control for precise volume adjustment with a 270° rotation range.
Programmable DIP Switches: Concealed DIP switches allow for advanced configuration, including Latch Talk on Channels A/B, Talk with Call, LED deactivation, Mic Gain adjustment, Mic Type selection, HP Level Off, Min Volume setting, RTS/Clear-Com compatibility, and Call-on Talk functionality.
Program Input: A thumbwheel level adjustment and a 3.5mm TRS jack are available for Program In.
System Compatibility: Requires a Clear-Com TWC-701 interface for connection to a main station.

3. Setup and Connections

Proper connection of the RS-703 beltpack is crucial for optimal performance. Refer to the diagrams below for connection points.

Clear-Com RS-703 Beltpack Connector Panel

Figure 3.1: Connector Panel Overview. This image displays the bottom panel of the RS-703 beltpack, showing the INTERCOM (XLR-3), PGM (3.5mm TRS and thumbwheel), and HEADSET (XLR-4M) connectors. The INTERCOM port is used for connecting to the main station or other beltpacks, the PGM port for program audio input, and the HEADSET port for connecting a headset.

Connect to Main Station: Use a standard XLR-3 cable to connect the INTERCOM port on the RS-703 beltpack to a Clear-Com TWC-701 interface, which then connects to your main intercom station. Ensure the cable is securely latched.
Connect Headset: Plug your XLR-4M compatible headset into the HEADSET port on the beltpack. Ensure a firm connection.
Program Input (Optional): If program audio is required, connect an audio source to the 3.5mm TRS jack labeled PGM. Adjust the program input level using the adjacent thumbwheel control.
Power On: Once all connections are made, the beltpack will receive power from the intercom line. The green Power LED on the top panel will illuminate.

4. Operation

The RS-703 beltpack offers intuitive controls for communication and monitoring.

Figure 4.1: Top Panel Controls. This image shows the top control panel of the RS-703 beltpack, featuring "TALK A" and "TALK B" buttons, "CALL A" and "CALL B" buttons, volume controls for each channel, and a central "Power" LED indicator.

4.1 Basic Communication

Talk Buttons (TALK A / TALK B): Press and hold the respective "TALK A" or "TALK B" button to speak on Channel A or Channel B. Release the button to stop speaking.
Latching Talk: If configured via DIP switches, a quick press and release of the "TALK" button will latch the talk function on. Press again to unlatch. The green Talk Latch LED will indicate when talk is latched.
Call Buttons (CALL A / CALL B): Press the "CALL A" or "CALL B" button to send a call signal to other users on the respective channel. The amber Call Signal LED will illuminate.
Volume Control (VOL): Use the recessed rotary controls next to each talk button to adjust the listening volume for Channel A and Channel B independently.

4.2 Advanced Configuration (DIP Switches)

The RS-703 features concealed DIP switches on the bottom panel for advanced customization. These settings should only be adjusted by qualified personnel.

Clear-Com RS-703 Beltpack Bottom Panel with DIP Switches

Figure 4.2: Bottom Panel and DIP Switches. This image shows the bottom of the RS-703 beltpack, revealing the access panel for the DIP switches. The diagram next to the switches indicates their functions, including settings for Latch Talk, Talk with Call, LED status, Mic Gain, Mic Type, Headphone Level, Minimum Volume, and compatibility modes (RTS/Clear-Com).

To access the DIP switches, carefully remove the cover on the bottom of the unit. Refer to the diagram printed on the unit or the detailed technical manual for specific switch functions. Common settings include:

Latch Talk: Enables or disables the latching function for the talk buttons.
Talk with Call: Configures whether pressing the talk button also sends a call signal.
LEDs Off: Disables the LED indicators for discreet operation.
Mic Gain: Adjusts the microphone input sensitivity.
Mic Type: Selects between dynamic or electret microphone types.
HP Level Off: Adjusts headphone output level.
Min Volume: Sets the minimum volume level.
RTS/Clear-Com: Selects compatibility mode for different intercom systems.

Always power off the unit before adjusting DIP switches to prevent potential damage or unexpected behavior.

5. Maintenance

The Clear-Com RS-703 beltpack is designed for durability and reliability. Regular, simple maintenance can extend its lifespan and ensure consistent performance.

Cleaning: Use a soft, dry cloth to wipe down the exterior of the beltpack. For stubborn dirt, a slightly damp cloth with mild soap can be used, ensuring no liquid enters the unit. Avoid abrasive cleaners or solvents.
Storage: When not in use, store the beltpack in a cool, dry place, away from direct sunlight and extreme temperatures.
Cable Inspection: Periodically inspect all connected cables (XLR, headset) for signs of wear, fraying, or damage. Replace damaged cables immediately to prevent intermittent connections or electrical hazards.
Connector Care: Keep connectors clean and free of dust or debris. Avoid forcing connections.
Avoid Drops and Impacts: While robust, the unit is an electronic device. Protect it from physical shocks and drops.

6. Troubleshooting

This section provides solutions to common issues you might encounter with your RS-703 beltpack.

Problem	Possible Cause	Solution
No Power LED / Unit not turning on	No power from intercom line; faulty cable; main station issue.	Check XLR-3 cable connection to the main station/interface. Verify the main station is powered on and functioning. Try a different XLR-3 cable.
No audio from headset	Headset not connected properly; headset faulty; volume too low; mic gain setting.	Ensure headset is fully plugged into the XLR-4M port. Increase the volume using the rotary control. Test with a known working headset. Check DIP switch settings for HP Level Off or Mic Gain.
Cannot transmit audio (Talk button)	Talk button not pressed/latched; mic faulty; DIP switch settings.	Ensure the Talk button is pressed or latched (if configured). Verify headset microphone is working. Check DIP switch settings for Mic Type or Latch Talk.
Call signal not working	Call button issue; system incompatibility; DIP switch settings.	Ensure the Call button is pressed firmly. Verify system compatibility settings via DIP switches (RTS/Clear-Com).

If the problem persists after attempting these solutions, please contact Clear-Com technical support or your authorized dealer.

7. Specifications

Feature	Detail
Model Name	RS-703
Brand	Clear-Com
Channels	2-Channel Analog
Line Connector	XLR-3
Headset Connector	XLR-4M
Program Input	3.5mm TRS Jack with Thumbwheel Level Adjustment
Mic Preamp Dynamic Range	130 dB
Audio Quality	High headroom, low noise, shaped frequency contour (Clear-Com Sound)
Controls	Tactile Talk/Call buttons, Recessed rotary Volume controls, Concealed programmable DIP switches
LED Indicators	Power (green), Call Signal (amber), Talk Latch (green)
Dimensions (LxWxH)	6 x 6 x 6 inches
Item Weight	14.6 ounces
Outer Material	Plastic
Recommended Use	Professional intercom communication

8. Warranty and Support

Clear-Com products are backed by a manufacturer's warranty. For detailed warranty information, please refer to the warranty card included with your product or visit the official Clear-Com website.

For technical assistance, troubleshooting beyond this manual, or service inquiries, please contact Clear-Com Technical Support:

Website: www.clearcom.com/support
Contact Information: Refer to the support section of the Clear-Com website for regional contact numbers and email addresses.

When contacting support, please have your product model (RS-703) and serial number ready.

	Clear-Com FSII Beltpack Bluetooth Identification and Upgrade Guide Information on identifying Clear-Com FSII beltpacks with Bluetooth capability (firmware 5.3.32.0+) and instructions for upgrading. Features visual identification cues and a link to detailed upgrade procedures.
	FreeSpeak II 1.9 Beltpack with Bluetooth Quick Start Guide Quick start guide for Clear-Com FreeSpeak II 1.9 beltpacks, detailing Bluetooth headset pairing, enabling wireless modes, and sidetone configuration.
	HelixNet 4 Keyset Beltpack (HX-BP-4K) Quick Start Guide Quick start guide for the Clear-Com HelixNet 4 Keyset Beltpack (HX-BP-4K), covering connection, power, controls, menu system, and pairing with the Arcadia Central Station.
	Clear-Com MS-232 Two-Channel Main Station User Manual and Technical Specifications This document provides comprehensive details on the Clear-Com MS-232 Two-Channel Main Station, including its introduction, description, quick start guide, operation, front and rear panel controls, troubleshooting, parts lists, technical specifications, and warranty information.
	Clear-Com Arcadia Central Station User Guide Comprehensive user guide for the Clear-Com Arcadia Central Station, detailing its features, setup, configuration, and operation for professional IP networked intercom systems, including FreeSpeak wireless, HelixNet wired, and Dante audio.
	Clear-Com Eclipse HX-Median User Guide Comprehensive user guide for the Clear-Com Eclipse HX-Median digital intercom matrix system. Covers installation, configuration, operation, maintenance, and specifications for professional audio communication.

Clear-Com RS-703