Components; Im-900 Intercom/Mixer Station; Im-900E Intercom/Mixer Station; Csb-900 And Csb901 Series Headsets - Setcom IM-900 Installation And Operation Manual

3 Components

3.1 IM-900 Intercom/Mixer Station

3.2 IM-900E Intercom/Mixer Station

3.3 CSB-900 and CSB901 Series Headsets

The IM-900 Intercom/Mixer contains all the electronics
necessary for the intercom amplifier and radio mixer
system. This station serves as the jack-in station for
Captain and Driver. A Pump Panel Station port is
paralleled off the Drivers circuit. It also provides ports for
the radio interface and intercom access with radio monitor
remote stations. A footswitch port allows either/both the
driver and Captain to key the radio with a footswitch or
push button stations. The IM-900's small size (6.5"W x
5.0"H x 1.75"D) and lack of adjusting controls allows
mounting it anywhere in the vehicle.
The IM-900E Intercom/Mixer contains all the electronics
necessary for the intercom amplifier and radio mixer
system. This station serves as the jack-in station for
Captain and Driver and third radio transmit position. It
also provides an AUX port that can be used for a fourth
internal or exterior radio transmit station. An intercom
port for up to eight additional positions is included. The
IM-900E's small size (6.5"W x 5.0"H x 1.75"D) and lack
of adjusting controls allows mounting it anywhere in the
vehicle.
CSB-900 Series Headsets utilize high noise attenuation
hearing protectors with a Noise Reduction Rating of 24dB in
conjunction with a noise canceling Electret microphone
mounted on a flexible boom. Standard configurations include
radio transmit headsets in both right and left dress models
designated, CSB-900R and CSB-900L respectively. Radio transmit
headsets have a volume control and a BLACK radio PTT
button mounted on the headset cup. CSB-900 headsets also
have a black backshell fitted to the plug. Although the CSB-900
headsets are intended for use at radio transmit stations in the
cab and at the pump panel position when at the scene, they
can be used at any station where a hot mic is desired.
CSB-900 Headsets with a 15 foot coil cord eliminate the need
to use an extension cord at the Pump Panel or other remote
stations. Radio transmit headsets may also be used with a
portable radio with the proper Portable Radio Adapter Cable
(PRAC). The CSB-901R & CSB-901L style headsets are for use at
the jumpseat positions as well as other remote locations. The RED
momentary PTT switch in this headset allows the user to talk on
the intercom but keeps unwanted noise off the line if the jumpseat
position is vacant, if preferred there is a Push-On/Push-Off PTT
switch and is designated with a -3. The plug backshell of the CSB-
901 headset is red, which identifies it as a non-radio transmit
headset. The 15 foot coil cord is standard; the six foot coil cord
version is identified by a -6 suffix (CSB-900R-6). Each headset
comes packaged with a hanger hook.
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