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Summary of Contents for Studio Technologies Model 211
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Page 1: User Guide
User Guide Issue 1, December 2015 This User Guide is applicable for serial numbers: M211-00151 and later Copyright © 2015 by Studio Technologies, Inc., all rights reserved www.studio-tech.com 50616-1215, Issue 1... - Page 2 This page intentionally left blank.
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Page 3: Table Of Contents
Installation and Setup ........... 9 Configuration ..............13 Operation..............21 Technical Notes ............24 Specifications ............... 29 Appendix A ..............30 Appendix B ..............31 Block Diagram Model 211 User Guide Issue 1, December 2015 Studio Technologies, Inc. Page 3... -
Page 4: Revision History
Revision History Issue 1, December 2015: 1. Initial release. Issue 1, December 2015 Model 211 User Guide Page 4 Studio Technologies, Inc. -
Page 5: Introduction
The Model 211 is compatible with many broadcast and audio system environments. Standard connectors are used to interface Figure 1. Model 211 front and back views microphone, headphone, talkback, and talent cue signals. Whether it’s microphone and production applications. Specialized... -
Page 6: Dynamic Range Control
Main and Talkback Outputs having dynamic range control of the main The Model 211 provides one main and output can offer increased effectiveness one talkback output. The main output is for many applications. These could include... - Page 7 “latching” configuration allows the button (“wet”) IFB circuits can also be connected to enable or disable the main output as to the Model 211. In this way an IFB (“in- desired. This is useful in radio broadcast- terruptable foldback”) audio signal can...
- Page 8 Power Source channels, while the other allows adjust- ment of the left/right level balance. To The Model 211 derives its operating pow- help minimize the chance of broadcast er from an external nominal 24 volt DC cues being missed, both level control source.
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Page 9: Installation And Setup
211’s enclosure; the unit does not have to Console Products be disassembled. Changes made to any of the configuration parameters become The Model 211 is just one in a series of active immediately. To prevent unwanted announcer console products available from access to the configuration switches a Studio Technologies. -
Page 10: Microphone Input
Sennheiser HMD 26 headset is very Devices with ¼-inch 2-conductor “monaural” popular for on-air sports broadcasting plugs can also be used with the Model 211’s use. A fine product, it works very well with headphone output. In this arrangement the Model 211. -
Page 11: Main Output
While Model 211. The fact that pin 1 “floats” will the talkback output circuitry is not intended minimize the chance of hums, noises, or to be “on-air”... -
Page 12: Dc Power Input
24 volts, correct operation will take place over a 20 to 30 volt range. The Model 211 Line Inputs requires 70 milliamperes at 24 volts DC The Model 211 allows two line-level audio for correct operation. -
Page 13: Configuration
Configuration clear material, are placed under the clear caps on the top of the buttons. For the Model 211 to support the needs of specific applications a number of From the factory the left button is labeled operating parameters must be configured. - Page 14 The goal is to bring the mic’s signal up to line level, nominally –2 dBu for the Model 211’s main output. Operating at this Figure 2. Bottom view of Model 211 showing signal level will help to ensure the delivery configuration switches and trim pots of “clean”...
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Page 15: Headphone Source Selection
The threshold Switch SW1-8 controls whether or not is set to be 2 dB above the Model 211’s phantom power is active. By phantom nominal internal operating level. So a good power’s very nature it could be left applied... - Page 16 The Model 211’s circuitry al- There may be cases where a monaural lows any combination of input assignments “single-muff” headset or headphone will to be made.
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Page 17: Operating Modes
Model 211 its “smarts.” The pressed. Upon power up the main output software has been carefully designed will be in its muted state. - Page 18 (“level/ eration everything is reversed! To be more level”) or stereo (“level/balance”) mode of specific, when selected for reverse mode, Issue 1, December 2015 Model 211 User Guide Page 18 Studio Technologies, Inc.
- Page 19 This will mute. This ensures that any audio signal provide the most natural audio quality with present on the selected Model 211 inputs the potential for a large amount of dynamic will always be present on the headphone range.
- Page 20 Another typical applica- Adjusting the Line Input tion where using the output of the compres- sor would be when the Model 211’s system Trim Pots mode is selected for production. In this case As has been previously mentioned, associ-...
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Page 21: Operation
LED, located on the left, adjusted as required. Normal operation will be lit when the main output is muted. of the Model 211 can now begin. The unit This indicates that it’s safe to speak as one will begin functioning a few seconds after sees fit. - Page 22 To clarify, when the Model 211 is set to the the main output will again be in its on production mode, the red LED will never (“latched”) state.
- Page 23 Controls (50%) position of its rotation range. This is Two rotary controls (“pots”) are located on intended to serve as an aid to Model 211 the Model 211’s front panel and are as- users. In an ideal installation, setting the sociated with the headphone output.
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Page 24: Technical Notes
Phantom Power as desired. The detent positions will al- The Model 211 provides a 48 volt nominal ways remain as a useful reference point. source of phantom power to support con- To achieve this condition the audio level denser-type microphones. - Page 25 Power The Model 211 is designed to directly connect with line-level cue signals, also A core part of the Model 211’s internal cir- sometimes referred to as “dry” broadcast cuitry is a switch-mode power supply that IFB circuits. However, there may be appli-...
- Page 26 “XLR style” connectors. The spare con- 3-Position Headers nector locations are specifically included so that a Model 211 can be customized to In addition to the spare connector loca- meet the many specific needs that arise tions on the back panel, provision has...
- Page 27 To make the process of connecting to the ohm resistor connected to +5 volts DC to Model 211’s headers a simple task an inter- act as a pull up. A combination of resistors face cable kit, order code 31087, is avail- and capacitors provide ESD protection.
- Page 28 (6.4 mm) in length and insert into the sock- ets with the cathode end located nearest the front of the Model 211. Power up the Model 211 and observe if the LEDs light. They are polarity sensitive and if either...
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Page 29: Specifications
Threshold: 2 dB above nominal level Attack/Release Time: 2 mSec/100 mSec, nominal Specifications and information contained in this User Slope: 5:1, nominal Guide subject to change without notice. Status LED: compressor active Model 211 User Guide Issue 1, December 2015 Studio Technologies, Inc. Page 29... -
Page 30: Appendix A
Appendix A Attached to the bottom of the unit is a security plate with text that provides a summary of the configurable parameters and related information. Issue 1, December 2015 Model 211 User Guide Page 30 Studio Technologies, Inc. -
Page 31: Appendix B
Pin 3 low P18 SW INS: Remote Switch Inputs P9 DC IN 1: 24 Volt DC Input (used by Pin 1 common Model 211’s back-panel connector) Pin 2 main output control Pin 1 common Pin 3 talkback output control Pin 2 +24 Vdc...
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