Studio-technologies 220 2008 User Manual

Copyright © 2008 by Studio Technologies, Inc., all rights reservedwww.studio-tech.comUser GuideIssue 4, October 2008This User Guide is applicable for

Issue 4, October 2008 Model 220 User GuidePage 10 Studio Technologies, Inc. configuration controls a security panel, included with each unit, is att

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 11But you’re welcome to try to “stump the chumps” in the Studio Technologie

Issue 4, October 2008 Model 220 User GuidePage 12 Studio Technologies, Inc. suffix “-XQ” to the headset’s part number (HMD25-XQ) specifies a 3-pin m

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 13The main output is interfaced by means of a 3-pin male XLR-type connector

Issue 4, October 2008 Model 220 User GuidePage 14 Studio Technologies, Inc. outputs are connected together, a signal attenuation of 6 dB can be expe

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 15signals over this wide nominal level range to be effectively utilized. Au

Issue 4, October 2008 Model 220 User GuidePage 16 Studio Technologies, Inc. were created at the factory using a stan-dard personal computer graphics

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 17Microphone Preamplifier Gain and Phantom PowerFive switches are used to s

Issue 4, October 2008 Model 220 User GuidePage 18 Studio Technologies, Inc. doesn’t necessarily indicate that the main output’s signal is being comp

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 19the left and right channels. This would entail setting switches SW2-2 and

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Issue 4, October 2008 Model 220 User GuidePage 20 Studio Technologies, Inc. a number of different ways in which the unit can function. It’s critical

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 21Two modes are available:• Push to talk: In this mode talkback out-put 2 i

Issue 4, October 2008 Model 220 User GuidePage 22 Studio Technologies, Inc. • Follows talkback output 2 button status: In this mode the relay will f

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 23the user is provided with a consistent and easy-to-use set of headphone l

Issue 4, October 2008 Model 220 User GuidePage 24 Studio Technologies, Inc. four modes impact overall system opera-tion will ensure that correct ope

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 25discussed, the power source can be provided by an IFB circuit, an externa

Issue 4, October 2008 Model 220 User GuidePage 26 Studio Technologies, Inc. Main Output vis-à-vis Talkback ActivityThis short section applies only i

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 27220 power up talkback output 2 will be in its muted state.Headphone Outpu

Issue 4, October 2008 Model 220 User GuidePage 28 Studio Technologies, Inc. counterclockwise direction reduces the level of the right channel provid

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 29Let’s begin with an application that has a stereo cue source connected to

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 3Table of ContentsIntroduction ...

Issue 4, October 2008 Model 220 User GuidePage 30 Studio Technologies, Inc. connecting the cable shield to the mating connector’s shell terminal, th

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 31were fine, being reasonably close to the desired –10 dBu. But some were m

Issue 4, October 2008 Model 220 User GuidePage 32 Studio Technologies, Inc. stability, operating in this manner until its low-voltage shutdown circu

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 33two colors in the opposite fashion. Their choice is to have the red LED l

Issue 4, October 2008 Model 220 User GuidePage 34 Studio Technologies, Inc. level is –10 dBu, the same as with an IFB circuit. This may require that

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 35The heat-shrinkable tubing is provided so that the connector solder cups

Issue 4, October 2008 Model 220 User GuidePage 36 Studio Technologies, Inc. Pushbutton BacklightingFor special applications, provision as been made

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 37with the talkback 1 button. Pin 3 is con-nected to the circuitry associat

Issue 4, October 2008 Model 220 User GuidePage 38 Studio Technologies, Inc. headers pin 1 is normally closed, pin 2 is common, and pin 3 is normally

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 39printed circuit board assembly. One end of the first interconnecting cabl

Issue 4, October 2008 Model 220 User GuidePage 4 Studio Technologies, Inc. This page intentionally not left blank.

Issue 4, October 2008 Model 220 User GuidePage 40 Studio Technologies, Inc. case it may possibly reduce the micro-phone signal level by less than on

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 41SpecificationsGeneral Audio:Frequency Response: 20 Hz-20 kHZ, ±0.1 dB, mi

Issue 4, October 2008 Model 220 User GuidePage 42 Studio Technologies, Inc. Appendix AA label is attached to the security plate on the bottom of the

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 5IntroductionWhat This User Guide CoversThis User Guide is designed to assi

Issue 4, October 2008 Model 220 User GuidePage 6 Studio Technologies, Inc. System FeaturesMicrophone InputA high-performance microphone preampli-fie

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 7the main output to be used as a third talk-back output. In this configurat

Issue 4, October 2008 Model 220 User GuidePage 8 Studio Technologies, Inc. discussed in the previous paragraph. The hybrid mode is especially useful

Model 220 User Guide Issue 4, October 2008Studio Technologies, Inc. Page 9output circuits act as voltage, rather than power, drivers. In this config