Front Controls And Indicators - Tech Works CI-MSI-22 Quick Reference Manual

Front Controls and Indicators:

CI-MSI-22
COLLABORATIVE INTERCOM
MICROPHONE / SPEAKER
INTERFACE
POWER CI-BUSS PA-BUSS
ALERT INPUT
ACTIVE ACTIVE
Power indicator: Green, when operating Normally
CI-BUSS, ALERT Active Indicator: Green, when the Operator Microphone is Active
PA-BUSS Input, ALERT Indicator: Green, when the PA-BUSS Input is Active
Microphone Gain: 16 Position Rotary Switch, factory set to 8,
Talk Level Indicator: Green, low input level; Green, flashing to Red, Normal Operation, with Local
Microphone, and ALC is active
Notch Filter: 'LO' Band Notch Filter trimpot, 250 to 1000Hz'; HI' Band Notch Filter trimpot, 750Hz to 3000Hz
PA-BUSS Output: Level Control trimpot; ON Indicator: Green, when the PA-BUS is ON
Speaker Output: Level Control trimpot; ON Indicator: Green, when the Speaker Amplifier is ON
NOTE: The Microphone Gain control is for setup; once set, it should not be touched by the User
Rear Connections:
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Speaker Output: 25-Volts Maximum, 10-Watts Maximum; Two Position Euro-Style Barrier Strip: Speaker (+/-
)
Microphone Input: Four Position Euro-Style Barrier Strip: Universal Microphone/Line Input (+/-);
Shield/Switch Common; Talk Switch (N.O.)
Selectable Equalization - 3 settings optimized for voice communication
Selectable Phantom Power (22 Volts, Short Circuit Protected)
Configured for a Microphone Level Input: 2000 Ohms Balanced, -75dBm or -60dBm (Selectable)
minimum input (Balanced) for full rated output
Configured for a Line Level Input: 2000 Ohms Balanced, 1000 Ohms Unbalanced, Balanced input -
35dBm to +5dB or -20dBm to +20dB Accommodation range (Selectable), Un-Balanced Input -30dBm
to +10dB or -10dBm to +20dB Accommodation range (Selectable)
Call Switch: Two Position Euro-Style Barrier Strip: Call Switch (+/-), (N.O.)
Call Switch must Float W.R.T. Common
CI-BUSS, "Master" Connector, RJ-45
CI-BUSS, "Slave" Connector, RJ-45
PA-BUSS, Input Connector, RJ-45, Optionally Powered for a CI-MI-1
PA-BUSS, Output Connector, RJ-45, Always Powered for an AS-1, 23 Volts @ 350MA Maximum
Power Connectors: (Two) - 3.5mm Barrel Connectors
Chassis: Knurled nut, Earth Ground
The Chassis is connected to Circuit Common through a 1-Meg-Ohm resistor
MICROPHONE NOTCH
LO HI
TALK
LEVEL
GAIN
CI-BUSS CI-BUSS
MASTER SLAVE
PA-BUSS SPEAKER
OUTPUT
LEVEL ON LEVEL
3dB/Step, 45dB Range
PA-BUSS
PA-BUSS
OUTPUT
INPUT
ON
CI-MSI-22
24VDC – 1.5 A
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