StudioTech 233 manual Pushbutton Switches and Status LEDs, Main Output Button and LED Indicators

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present on the outputs unless power has been supplied. Specifically, the micro- phone does not passively “cut through” to the main output connector!

Upon Model 233 power up, the four status LEDs will light in succession as a firmware “boot up” indication. The unit will then begin normal operation. Depending on the selected configuration, one LED as- sociated with the state of the main output may be lit. The user is now presented with three buttons, four LEDs, and three rotary controls. These are simple to operate and understand, as will be described in the fol- lowing paragraphs.

Pushbutton Switches and Status LEDs

Three pushbutton switches are used to control the main output and the talkback functions. The way each operates de- pends on the selected configuration. Four LED indicators are located adjacent to the buttons. They reflect the status of the main output and talkback functions.

Main Output Button and LED Indicators

The button on the left, factory labeled as COUGH, functions according to the se- lected configuration. Two LED indicators, located directly above the button, are associated with the status of the button and/or the main output. If the Model 233 is set to the on-air mode the green LED, lo- cated on the right, is lit whenever the main output is active. This could be considered as an “on-air” or mic active indicator. At the least it should serve as a “careful what you say” warning! The red LED, located on the left, will be lit whenever the main output is muted. This indicates that it’s safe to speak as one sees fit.

If the Model 233’s system mode is config- ured for production the red LED will never light. This is to reflect the fact that the main output button has now taken on a function similar to that of one of the talkback but- tons. To clarify, when the Model 233 is set to the production mode the red LED will never light while the green LED will light whenever the main output is active.

Main Output Button Modes

If the Model 233 is set for the on-air mode:

•Push to mute: If this mode is selected the main output is normally active. The main output will mute whenever the but- ton is pressed and held.

•Push to talk: If this mode is selected the main output is normally muted. The main output will become active when- ever the button is pressed and held.

•Alternate action: If this mode is selected the main output will alternate between its active and muted states whenever the button is pressed. Upon power up the main output will be in its muted state.

•Hybrid: This mode is a combination of push to talk and alternate action. It is similar to the way that talk buttons function on user stations associated with broadcast or production intercom systems. If the button is pressed and held the main output will become ac- tive and remain active until the button is released. If the button is momentarily “tapped” the main output will change state. Upon Model 233 power up the main output will be in its muted state.

Talkback activity will always cause the main output to be placed in its off state. If the main output was in the “latched” on

Model 233 User Guide

Issue 1, September 2007

Studio Technologies, Inc.

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Contents User Guide This page intentionally left blank Table of Contents Issue 1, September Model 233 User Guide System Overview IntroductionWhat This User Guide Covers Microphone Input System FeaturesMain Output Talkback FunctionsFlexibility User Controls and Status IndicatorsDynamic Range Control Sidetone Cue SourcesHeadphone Output Intercom Interface Power SourcesAudio Quality and Protection Auxiliary RelayConnectors ConfigurationAdditional Connector Locations Multi-Pin Headset ConnectorsSystem Components Installation and SetupOptions Headphone Output Line-Level Talkback Outputs Line Inputs External Power Input Pushbutton Labeling ConfigurationMicrophone Preamplifier Gain Microphone Preamplifier Gain and Phantom PowerHeadphone Source Selection Phantom Power On/OffLeft and right channel headphone source selection settings Headphone output mode settings Headphone Output ModeOperating Modes Main Output Button ModeTalkback 1 Button Function Talkback 1 Button ModeTalkback 2 Button Mode Main Output Source Sidetone ModeTalkback 2 Button Function Headphone Output Operating Modes Dual-Channel or Stereo ModeReverse Left/Right Mode Main Button Mode Minimum Level ModeSystem Mode Relay ModeTalkback 2 to Intercom Function Mode Talkback 1 to Intercom Function ModeOperation ConclusionMain Output Button Modes Pushbutton Switches and Status LEDsMain Output Button and LED Indicators Talkback 2 Button and LED Indicator Talkback 1 Button and LED IndicatorTalkback 1 Button Modes Talkback Output 2 Button ModesLevel/Balance Mode Level/Level ModeSidetone Operation Monaural Headphone Output Level Control OperationAdvanced Operation Adjusting the Line Input Trim PotsGrounding and Shielding Intercom Interface Sidetone AdjustmentTechnical Notes Intercom Audio Levels Intercom Channel CrosstalkConnecting an IFB Circuit External Power Sources Phantom PowerSymptoms of Insufficient Power Travel Case Additional ConnectorsLED Colors Issue 1, September Model 233 User Guide Pushbutton Backlighting P18 Remote Control/Tally ConnectionsP19 Compressor CircuitGeneral Audio SpecificationsAppendix a
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