10/29/2019
Tech Works CI-Series Systems Planning & Installation Manual Page
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Audio System Setup:
For successful system operation; a methodical approach to system setup is essential.
Audio Blocks, must provide gain structures, Controls and Indicators to assure that setup is both
simple, and affective.
Below are general setup instructions; for setup details, refer to the Product Sections.
CI-BUSS Product, Microphone Gain Setup:
Each Block has both Input and Output Controls with associated Indicators.
When the Indicators are green the associated control is active or enabled.
The Audio may be 'Keyed' depending on the system setup.
Refer to your configuration, and Block User Guides.
Do not attempt adjustments if the associated indicator is not lighted green!
The CI-BUSS uses a standard audio level of ~0dBm RMS.
All audio Blocks have a Digital Rotary Switch (3dB/Step) to set Microphone Sensitivity.
Each Block also includes a fast envelope Limiter, with a “Talk Level” Indicator.
The nominal Microphone gain is ~6dB into limiting, therefore the user has a wide range of inputs,
with a nearly constant output levels.
Microphone Gain is always setup first.
Initially, the Output level controls should be set to minimum (No Output).
Limiter Setup with a Microphone:
Always do first
Talk into the microphone at a normal to loud level (don’t talk softly).
Insure the Microphone is Keyed, the indicator is Green.
Advance the “Microphone Gain”, from “0” until the “Talk Level” indicator just flashes Red.
Advance the “Microphone Gain” another two clicks (6dB into limiting).
Or set the "Microphone Gain" as instructed in that's products user Guide.
PA-BUSS Output and Speaker setup:
Assure there is an audio input.
With normal audio input levels, with Inputs and outputs keyed (Output Indicator Green).
Set the Speaker Listening Level.
See the PA-BUSS Section for Monitor/Communications Output Adjustments.
PA-BUSS, Audio Level Control Setup:
The PA-BUSS Audio Outputs Levels are dependent on establishing standard CI-BUSS levels.
CI-BUSS levels must be adjusted, on all system Blocks, first!
The setup strategy is dependent on the PA-BUSS Amplifier string.
The maximum PA-BUSS audio Signal Output is 0dBm.
All Tech Works Amplifiers, provide maximum rated output with a 0dBm input.
Therefore all controls, on each Block, and Amplifier may be considered an Attenuator (Below the
maximum output level).
