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Front Controls and Indicators:
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, 3dB/Step, 45dB Range
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:
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
COLLABORATIVE INTERCOM
MICROPHONE / SPEAKER
INTERFACE
POWER
CI-MSI-22
PA-BUSS
OUTPUT
TALK
LEVEL
GAIN
CI-BUSS
ALERT
ACTIVE
ON
PA-BU SS
INPUT
ACTIVE
LO HI
ON
SPEAKERNOTCH
LEVEL LEVEL
24VDC – 1.5 A
CI-MSI-22
Tech Works * YORBA LINDA * CA * 1-800-813-1080 * WWW.TECH4PEOPLE.COM
CALL-SW (-)
SPKR (-)
SPKR (+)
CALL-SW (+)
CI-BUSS
SLAVE
PA-BUSS
OUTPUT
COMMON
MIC (-)
MIC (+)
TALK
CI-BUSS
MASTER
PA-BUSS
INPUT
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