Tech Works CI Series System Planning Manual page 21

Rear Connections:
Headsets (Four): Connector: RJ-22, Telephone handset connectors
Talk Switch: Two Position Euro-Style Barrier Strip:
Switch Common
Talk Switch (+) (N.O.)
CI-BUSS, "Master" Connector, RJ-45,
CI-BUSS, "Slave" Connector, RJ-45,
PA-BUSS, "Monitor" Connector, RJ-45,
Call Switch: -Two Position Euro-Style Barrier Strip:
Call Switch (+), (N.O.)
Call Switch (-) Note: Call Switch must Float W.R.T. Common
Power Connectors: (Two) - 3.5mm Barrel Connectors
Chassis: Hex nut, Earth Ground
Note: The Chassis is connected to Circuit Common through a 1-Meg-Ohm resistor
Initial Adjustments:
Up to 4 CS-540 Headsets
To assure consistent performance each Headset requires initial adjustments. Please see the headset
data sheet for proper set up before connection or operation.
HSI-41 Microphone Gain Control: "9"
Microphone setup should be confirmed, when speaking at a normal level
The Setup Indicator on the HSI-41, should flash red
After all the microphones are set up, the Listening Levels may be adjusted by the user by adjusting
the listening level on the headset itself.
The "MONITOR LEVEL" Control sets the PA-BUSS output level.
Fully clock-wise is ~ 0dBM nominal output
There are several strategies for using this level setting:
1. Advance the control fully CW, and use the Amplifier Level Control
for setting Speaker Levels
2. Set the Amplifier Level Control Fully CW, and use the HSI-41 Level Control
to set Speaker Levels
3. If a system has several Amplifiers, the "Level" controls on the amplifiers may be used for
'Balance'; the level control on the HSI-41 may be used as a 'Master Level' control
10/29/2019 Tech Works CI-Series Systems Planning & Installation Manual
HEAD
HEAD HEAD HEAD CI-BUSS
SET SET SET SET MASTER
#1 #2 #3 #4 OUTPUT
Tech Works * YORBA LINDA * CA * 1-800-813-1080 * WWW.TECH4PEOPLE.COM
HEAD HEAD HEAD HEAD
SET SET SET SET
#1 #2 #3 #4
Tech Works * YORBA LINDA * CA * 1-800-813-1080 * WWW.TECH4PEOPLE.COM
FS-1-Plus
Foot Switch
for Priority Talk
CI-BUSS PA-BUSS
SLAVE MONITOR
CI-HSI-41
INPUT OUTPUT
24VDC - 550mA
CI-BUSS CI-BUSS PA-BUSS
MASTER SLAVE MONITOR
CI-HSI-41
OUTPUT INPUT OUTPUT
24VDC - 550mA
FS-1-Plus
Foot Switch
for Operator Call
Page 21 of 42
PS-2437A
POWER SUPPLY