Studio-technologies IFB Plus 2005 User Manual

© 2005 by Studio Technologies, Inc., all rights reservedwww.studio-tech.comModel 2 Central Controllerand Related ComponentsUser Guide50131-1205, Issue

Issue 8, December 2005 Model 2 User GuidePage 10 Studio Technologies, Inc.Locating the UnitPhysical access and mechanical noise are the primary fact

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 11the AUX input level to be adjusted for cor-rect VOX operation. It is antic

Issue 8, December 2005 Model 2 User GuidePage 12 Studio Technologies, Inc.Model 2’s sonic quality is as good as many audio consoles, tape recorders,

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 13interface mode switches, located on the back panel, to the desired mode—ei

Issue 8, December 2005 Model 2 User GuidePage 14 Studio Technologies, Inc.in a desk, console, or other enclosure. Refer to Figure 3 for a mechanical

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 15attached to the jack. The wiring harness has a red-colored wire, a black-c

Issue 8, December 2005 Model 2 User GuidePage 16 Studio Technologies, Inc.correctly, as an incorrect setting could seri-ously damage the unit. Shoul

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 17The red LED, labeled IFB, is lit any time pro-gram audio is being interrup

Issue 8, December 2005 Model 2 User GuidePage 18 Studio Technologies, Inc.panel. The red LED, labeled LC for loop current, lights any time DC curren

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 19composite IFB channel 1 audio is sent out the interface. In the down posit

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Issue 8, December 2005 Model 2 User GuidePage 20 Studio Technologies, Inc.Bring an audio source into the auxiliary au-dio input and test the VOX int

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 21audio scene where most equipment has a low output source impedance, and a

Issue 8, December 2005 Model 2 User GuidePage 22 Studio Technologies, Inc.3) Referring to page 2 of the Model 2’s schematic diagram, find the resis

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 23it by simply changing one resistor per channel. Refer to page 9 of the Mod

Issue 8, December 2005 Model 2 User GuidePage 24 Studio Technologies, Inc.If you have a source that is especially low in level, e.g., –10 dBu, all i

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 25Please refer to the block diagrams, located at the end of this guide, and

Issue 8, December 2005 Model 2 User GuidePage 26 Studio Technologies, Inc.fed to a full wave diode bridge and a electro-lytic filter capacitor which

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 27to be selected from among the four program inputs and the receive audio fr

Issue 8, December 2005 Model 2 User GuidePage 28 Studio Technologies, Inc.Audio enters the VOX circuit via a 3-position source select switch. The sw

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 29In the telephone line mode, a relay con-trols if the telco signal is conne

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 3Table of ContentsIntroduction ...

Issue 8, December 2005 Model 2 User GuidePage 30 Studio Technologies, Inc.bifurcated contact relay controls the con-nection of the telephone line to

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 31Access Station InterfaceThe Model 2 contains interface circuitry to allow

Issue 8, December 2005 Model 2 User GuidePage 32 Studio Technologies, Inc.of the balanced output to circuit common (pin 1 of the line output connect

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 33These references are created by resistor divider circuits. The +18 V also

Issue 8, December 2005 Model 2 User GuidePage 34 Studio Technologies, Inc.from initiating an interrupt on a channel that is already in the interrupt

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 35is intended to interconnect with the Model 2’s talent amplifier output. Th

Issue 8, December 2005 Model 2 User GuidePage 36 Studio Technologies, Inc.Power SupplyThe Model 2 Central Controller provides +18 Vdc modulated with

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 37allowing the internal overpower protection to shut down the regulator. Dur

Issue 8, December 2005 Model 2 User GuidePage 38 Studio Technologies, Inc.SpecificationsModel 2 Central ControllerBack Mounting Locations:Provision

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 39Telephone Interface:Operating Modes: telephone line or standard audio sign

Issue 8, December 2005 Model 2 User GuidePage 4 Studio Technologies, Inc.This page intentionally left blank.

Issue 8, December 2005 Model 2 User GuidePage 40 Studio Technologies, Inc.Dimensions (Overall):19.00 inches wide (48.3 cm)1.72 inches high (4.4 cm)1

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 41Model 32 Talent AmplifierPrimary Application: intended for use with Model

Issue 8, December 2005 Model 2 User GuidePage 42 Studio Technologies, Inc.Model 36 Mounting AdapterApplication: intended for use with Model 32 and M

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 43Figure 1. IFB Plus Series Model 2 Central Controller Rear Bracket Mountin

Issue 8, December 2005 Model 2 User GuidePage 44 Studio Technologies, Inc.Figure 2. IFB Plus Series Model 25A 19-Inch Rack Adapter (used with Model

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 45Figure 3. IFB Plus Series Model 28A Panel Adapter(used with Model 22 Acce

Issue 8, December 2005 Model 2 User GuidePage 46 Studio Technologies, Inc.Figure 4. IFB Plus Series Model 22 Access Station Overall Dimensions

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 5IntroductionThe IFB Plus Series Model 2 Central Con-troller from Studio Tec

Issue 8, December 2005 Model 2 User GuidePage 6 Studio Technologies, Inc.Model 2 Central ControllerContained in a single rack space unit is ev-eryth

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 7and prevent abnormally high signal levels from reaching a user’s ears. The

Issue 8, December 2005 Model 2 User GuidePage 8 Studio Technologies, Inc.Three audio sources can serve as the VOX input: receive audio from telephon

Model 2 User Guide Issue 8, December 2005Studio Technologies, Inc. Page 9Each Model 32 and Model 33 contains both a male and female XLR-type connect