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Model 374A Intercom Beltpack
User Guide
Issue 1, June 2018
This User Guide is applicable for serial numbers
M374A-02501 and later with application firmware 1.1 and later
and Dante® firmware 1.0.0 (UltimoX4 4.1.2.1) and later
Copyright © 2018 by Studio Technologies, Inc., all rights reserved
www.studio-tech.com
50658-0618, Issue 1
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Summary of Contents for Studio Technologies 374A
- Page 1 Issue 1, June 2018 This User Guide is applicable for serial numbers M374A-02501 and later with application firmware 1.1 and later and Dante® firmware 1.0.0 (UltimoX4 4.1.2.1) and later Copyright © 2018 by Studio Technologies, Inc., all rights reserved www.studio-tech.com 50658-0618, Issue 1...
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Page 3: Table Of Contents
MODEL 374A INTERCOM BELTPACK Table of Contents Revision History ............4 Introduction ..............5 Getting Started .............. 7 Operation ..............13 Technical Notes ............. 16 Specifications ..............21 Model 374A User Guide Issue 1, June 2018 Studio Technologies, Inc. Page 3... -
Page 4: Revision History
MODEL 374A INTERCOM BELTPACK Revision History Issue 1, June 2018: 1. Initial release. Issue 1, June 2018 Model 374A User Guide Page 4 Studio Technologies, Inc. -
Page 5: Introduction
Figure 1. Model 374A Intercom Beltpack top and bottom views Model 374A User Guide Issue 1, June 2018 Studio Technologies, Inc. - Page 6 Configuration Flexibility also be configured to turn off any active talk channels. A highlight of the Model 374A is its ability to be easily configured to meet the needs of Audio Quality specific users and applications. All configuration choices are made using...
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Page 7: Getting Started
Model 374A’s PoE interface reports to the power sourcing A unique Model 374A feature is the ability equipment (PSE) that it’s a class 1 (very to individually configure the way in which low power) device. - Page 8 Refer to Figure 2 for connection details. be made using the two connectors located The microphone input connections are on the bottom of the Model 374A’s enclo- compatible with most unbalanced dynamic sure. An Ethernet data connection with or electret (low-volatge DC-powered) Power-over-Ethernet (PoE) capability will be microphones.
- Page 9 Dante left earpiece connects to pin 4 and the transmitter (Tx) channels. These four audio right earpiece to pin 5. signals can be sent to the Model 374A’s 2-channel headphone output. Dante Configuration The Model 374A supports an audio sample...
- Page 10 Dynamic input type. If the headset has a must be on the same local area network microphone that requires low-voltage DC (LAN) and subnet as the Model 374A unit power for operation select Electret. Note or units that are to be configured.
- Page 11 five values. The correct value is simply the gain setting may also be useful when the one that makes the user most comfortable. Model 374A is going to be deployed at Sidetone audio can also be disabled by events where users are not able to speak selecting Off.
- Page 12 This configuration section allows indepen- This is an interesting mode, allowing one dent selection of how the four talk buttons or more Model 374A audio channels to will function. When the Push to Talk mode serve in a “monitor mixer” function. The...
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Page 13: Operation
Dante Controller software application. In another Dante device. The SYNC LED this way the unit’s four audio output chan- will light red when the Model 374A is not nels (Dante transmitter channels) and four synchronized with a Dante network. It will... - Page 14 Four rotary potentiometers (“pots”), locat- sent out the associated Dante audio output ed on the Model 374A’s top panel, allow (transmitter) channel. The button’s green individual adjustment of the level of the LED will light to indicate that the output is four audio input signals as they are sent to active.
- Page 15 When Identify is selected it will send a com- Model 374A users with a confidence signal mand to a single Model 374A unit. On that that they are actively talking to other inter- specific unit the four pushbutton LEDs will com users.
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Page 16: Technical Notes
Mic Kill Function Configuration Protocol). If a DHCP server is not detected an IP address will auto- The Model 374A includes a mic kill func- matically be assigned using the link-local tion, allowing talk buttons that have been protocol. This protocol is known in the placed in their enabled (on) state to be re- Microsoft®... - Page 17 ARP command the required and hold the channel 4 talk button. Then “clues” can be obtained. connect the Ethernet cable. Upon applica- tion of PoE power the Model 374A will go Optimizing Network through its normal power-up sequences Performance followed by a display of the firmware ver-...
- Page 18 A selection in the STcontroller software to the naming convention required by the application allows the Model 374A’s ap- Model 374A, the name of the zip file itself plication firmware version to be identi- will include the file’s version number. For example, a file named M374Av1r2MCU.zip...
- Page 19 firmware. mine the version of the firmware (embedded software) that resides in the Ultimo “chip.” 6. At this time the Model 374A is operat- The STcontroller software application can ing under the newly-saved application also be used to identify the Ultimo’s firm- firmware and the USB flash drive can...
- Page 20 374A for which you want to restore its Model 374 are not present on the Mod- defaults. Select the Device tab and then el 374A. As such the belt clip no longer select the Factory Defaults feature. Then needs to be rotated and its mounting click on the OK box.
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Page 21: Specifications
Frequency Response: 50 Hz to 10 kHz, –3 dB Mounting: intended for portable applications; contains integral belt clip; optional MBK-01 Distortion (THD+N): <0.02% Mounting Bracket Kit allows Model 374A to be Dynamic Range: 75 dB permanently mounted Compressor: Weight: 0.6 pounds (0.3 kg) Threshold: 1 dB above nominal level (–19 dBFS)
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