Setcom IM-900 - User Manual

Installation and Operation Manual
Systems 900 and 900E
System 900/900E Installation and Operation Manual M-0206 Rev. 3

Summary

General

System Description

IM-900

The Setcom System 900 is a vehicular intercom/radio mixer designed specifically for fire apparatus and other emergency response vehicles.

Standard Features IM-900

Lists features like up to 10 headset positions, radio/intercom access, automatic operation, RFI/EMI protection, and weatherproof stations.

System Description IM-900 E

Describes the IM-900E as similar to IM-900 but with four radio access circuits and an AUX port replacing the footswitch port.

Standard Features IM-900 E

Lists features of the IM-900E including up to 10 headset positions, radio/intercom access, and four radio transmit access ports.

Components

IM-900 Intercom;Mixer Station

Details the IM-900 as an intercom amplifier and radio mixer system, serving as the jack-in station for Captain and Driver.

IM-900 E Intercom;Mixer Station

Describes the IM-900E as containing intercom amplifier and radio mixer, serving as jack-in for Captain and Driver, plus an AUX port.

CSB-900 and CSB901 Series Headsets

Details CSB-900/901 headsets with noise attenuation, noise-canceling microphones, and specific features like PTT buttons and cable types.

8 B-900 and 8 B-901 Series Headsets

Describes 8B-900/901 headsets with noise attenuation, noise-canceling mics, volume control, and PTT buttons for radio transmit and intercom.

CSB-900 W3 and CSB-901 W3 Wireless Headsets

Details wireless headsets with up to 1200ft range, 'Instant On' feature, Aerial Advantage antenna, and long talk time.

6 B-900 and 6 B-901 Series Headsets

Describes 6B-900/901 single-ear muff headsets with reversible cable dress, radio transmit, intercom, PTT, and volume control.

5 B-EMS900 and 5 B-EMA901 Series Headsets

Details 5B-EMS900/5B-EMA901 single-speaker headsets for Medical Technicians, with reversible cable and in-line controls.

25-0689 Coiled Extension Cable

Describes the 25-0689 coiled extension cable, often used with jumpseat headsets and tailboard stations for backing assistance.

ES-900-xx and ES-900 RA-xx Extension Stations

Details ES-900/ES-900RA extension stations that extend TRS connections to remote locations for radio or intercom access.

ES-907-xx Extension Station

Describes the ES-907-xx Extension Station, which extends TRS connections to a remote location and includes a footswitch port.

RSJ-900 RA-xx Remote Station Jack

Details the RSJ-900RA-xx Remote Station Jack used to remote radio transmit headset jacks on System 900 Master Stations.

PS-900 EMS EMS Remote Station

Describes the PS-900EMS EMS Remote Station, which extends the 'Auxiliary Input' port of an IM-900E for remote radio transmit.

JS-900-xx Jump Seat Station

Details the JS-900-xx Jump Seat Station, providing two jumpseat intercom/radio listen positions with a twist-lock connector.

JS-900 W-xx Jump Seat Station

Describes the JS-900W-xx, a weatherproof version of the Jump Seat Station, providing two jumpseat intercom/radio listen positions.

JS-901-xx and JS-902-xx Jump Seat Station with Expansion Port

Details JS-901/JS-902 Jump Seat Stations with expansion ports allowing daisy-chaining of additional remote stations.

JS-901 W-xx and JS-902 W-xx Weatherproof Jump Seat Station with Expansion Port

Describes JS-901W/JS-902W weatherproof stations with expansion ports for daisy-chaining additional remote stations.

JSDB-902-10-30 Jump Seat Distribution Box with Tailboard Expansion Port

Details the JSDB-902-10-30 distribution box providing six jumpseat positions and a connection point for a TS-900 Tailboard Station.

JSDB-906 Jump Seat Distribution Box

Describes the JSDB-906 distribution box, offering six jumpseat positions and a twist-lock connector for IM-900/IM-900E.

PS-900-xx Pump Panel Station

Details the weatherproof PS-900-xx Pump Panel Station for mobile cab-mounted radio use by the Engineer at the pump panel.

PS-900-30-2 Pump Panel Station

Describes the PS-900-30-2 Pump Panel Station, similar to PS-900-xx but with a 3-conductor phone plug termination.

TS-900-xx Tailboard Station

Details the TS-900-xx Tailboard Station, a weatherproof unit for intercom access/radio listen, often used for tiller or tailboard positions.

MACB-xx and LMACB-xx Microphone Adapter Cable

Describes MACB/LMACB Microphone Adapter Cables for plug-in installation, retention of hand mic, and easy radio exchange.

RC-18 xx Radio Cable

Details the RC-18xx Terminated Radio Cable, fitted with mating connectors for RIM-900-BAL and radio accessory ports.

RC-xx Unterminated Radio Cable

Describes the RC-xx Unterminated Radio Cable, which is hardwired by a technician directly to the radio for connection to the master station.

MEC-9-xx Extension;Interconnect Cable

Details the MEC-9-xx Extension/Interconnect Cable, used to relocate components with a four-conductor Conxall connector.

RIM-900-BAL Radio Interface Module

Describes the RIM-900-BAL Radio Interface Module, which allows adjustment of transmit and receive audio levels.

RSM-900, RSM-902 Radio Select Module

Details the RSM-900/RSM-902 Radio Select Modules, allowing monitoring and transmission on selected radios.

FS-901-xx, FS-902-xx and FS-903-xx Footswitches

Describes footswitches (FS-901/902/903) for keying the radio, mountable for Captain, Driver, or both positions.

PBS-901-xx, PBS-902-xx and DPBS-900-xx Push Button Stations

Details push button stations (PBS-901/902, DPBS-900) for keying the radio, mountable for Captain, Driver, or both positions.

PRAC-9 xx Portable Radio Adapter Cables

Describes PRAC-9xx cables that allow system 900 radio transmit headsets to be used with portable radios, listing various models.

PRAC-Wxx Portable Radio Adapter Cable for System 900 Liberator Fire Wireless Headsets

Details PRAC-Wxx cables for CSB900Wx headsets to connect with portable radios, listing various models.

Representative Systems

Two Crew Wireless

Illustrates a system diagram for a two-crew wireless setup using CSB-900W3 headsets and an IM-900 with RIM-900-BAL.

Two Crew Driver Wireless

Presents a system diagram for a two-crew driver wireless configuration, featuring CSB-900W3 driver and CSB-900L captain headsets.

Four Crew Wireless

Illustrates a system diagram for a four-crew wireless setup, including driver, captain, and two jumpseat CSB-900W3 headsets.

Four Crew Driver Wired with Pump Panel

Presents a system diagram for a four-crew wired setup with driver, captain headsets, and jumpseat headsets, including a pump panel station.

Four Crew - Three Radios - 8 B Headsets

Illustrates a system diagram for a four-crew setup with three radios, using 8B-900/8B-901 headsets and an IM-900 with RSM-900.

Four Crew - Two Radios - EMS System

Presents a system diagram for a four-crew EMS system with two radios, using 8B-900 headsets and 5B-EMS900 headsets with an IM-900E.

Two Crew - One Radio - Two Remote Heads - Using RCC-900

Illustrates a system diagram for a two-crew setup with one radio, two remote heads, and an RCC-900 Radio Cable Combiner.

Installation

Before Starting

Provides guidance on understanding the system, comparing components, and checking radio interface devices before installation.

Negative Ground

Explains the IM-900's 12Vdc negative ground requirement and the need for a DC converter for positive ground systems.

Pre-existing Conditions

Discusses how alternator whine and other noises can become noticeable with noise-reducing headsets and potential solutions.

Securing Station Hardware

Provides guidance on selecting mounting locations, drilling pilot holes, and securing station hardware using screws or backup plates.

IM-900 and IM-900 E Master Stations

Details mounting the IM-900/IM-900E master stations and microphone adapter/radio cables, recommending locations and mounting methods.

Microphone Adapter Cable, MACB-xx & LMACB-xx

Explains the placement and connection of MACB/LMACB cables, including routing and connecting receive audio from external speakers.

Remote Head Installation at the Pump Panel

Discusses remote head installation at pump panels, mentioning PS-900 Pump Panel Station as an alternative and radio-specific mounting details.

RCC-900 Radio Cable Combiner Solution

Explains the RCC-900 Radio Cable Combiner for dual head radios not slaved together, interfacing the active head to the intercom system.

MS-920 Solution

Describes the MS-920 solution for interfacing with mic ports of remote heads or IM-900 Master Stations for radio transmit headset use.

Remote Jump Seat Stations

Provides installation considerations for remote and extension stations like JS-900/JS-901/JS-902, emphasizing positioning and cable runs.

Weatherproof Exterior Stations

Details positioning of stations and remote jacks for exterior locations like pump panels, ensuring proper cable routing and cord relaxation.

Installation of Weatherproof Stations

Guides installation of watertight enclosures using self-adhesive backs, marking, drilling holes, and securing stations for optimal performance.

Cable Installation

Provides instructions for routing cables along grooves, using knockouts, and securing all interconnect and radio cables with weatherproof connectors.

CSB 900 Series Headsets

Details fitting CSB 900 Series headsets, positioning the microphone, and adjusting volume for optimal intercom and radio communication.

Troubleshooting

Nothing working at all

Troubleshooting steps for when the system is not functioning, checking power, fuses, and system setup against diagrams.

No Sidetone

Addresses lack of sidetone by checking volume control, IM-900 power, and ensuring a radio transmit headset is used.

Squeal heard in the headset

Troubleshooting squeal by checking headset type (radio transmit vs. intercom only) and PTT button color.

Intercom is working, but no radio transmit

Troubleshooting no radio transmit by ensuring snug cable connections, using a radio transmit headset, and trying a known working headset.

Weak transmit heard through the radio

Addresses weak transmit by checking RIM-900-BAL TX dial, mic distance, radio setup, and headset microphone orientation.

Radio receive audio is heard in the cabin but not in the headsets

Troubleshooting missing cabin audio by checking MAC/radio cable connections to the radio's speaker lead.

Steady hum heard in the headset

Identifies ground loops as the common cause for steady hum and provides steps to test and eliminate shorts to ground.

Excessively noisy audio in headsets

Suggests routing cables away from noise sources like power cables, antenna, or computer boxes to reduce excessive noise.

Alternator whine is heard in headsets at all times

Troubleshooting alternator whine by checking radio or power cables, grounding pin 4, and inspecting battery connections and condition.

Excessive AC ripple

Lists possible causes for excessive AC ripple including battery issues, alternator diodes, and terminal connections, suggesting tests and filters.

Alternator whine heard through the radio cable

Addresses alternator whine through radio cables by checking cable shields, grounding, and filtering the radio's audio stages.

Reducing noise interference in mobile two-way radios

Provides a reference to a Motorola article on reducing noise interference in mobile radios, with a web address provided.

Technical Support

Setcom Warranty

Helpful Links

Legacy Parts

DIP Switch Configurations

Setcom IM-900 Specifications

General

Type	Wireless Intercom System
Frequency Range	900 MHz
IP Rating	IP54
Power Output	1 W
Dimensions	150 x 60 x 40 mm