Model 362 Listen-Only Beltpack User Guide Issue 1, September 2016 This User Guide is applicable for serial numbers M362-00151 and later with application firmware 1.1 and later and Dante firmware 2.1.1 (Ultimo 3.10.1.12) and later Copyright © 2016 by Studio Technologies, Inc., all rights reserved www.studio-tech.
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Table of Contents Revision History ............................................................ 4 Introduction ................................................................... 5 Getting Started .............................................................. 7 Operation ...................................................................... 11 Technical Notes ............................................................. 13 Specifications ................................................................
Revision History Issue 1, September 2016: 1. Initial release. Issue 1, September 2016 Page 4 Model 362 User Guide Studio Technologies, Inc.
Introduction The Model 362 Listen-Only Beltpack is a self-contained 2-channel user device that supports headphone monitoring of two audio channels associated with the Dante audio-over-Ethernet media networking technology. Each Model 362 is intended to be used by one user, providing them with the form factor, reliability, and features needed to be effective in a variety of applications.
stereo headphones, single- or dual-ear broadcast headsets, and stereo or monaural earpieces or earbuds. As a final step the Dante Controller personal computer application will be used to select (route) two audio sources to the Model 362’s inputs. Two “push-in/push-out” rotary potentiometers (“pots”) make it easy for the user to set and maintain the desired level on the 2-channel headphone output. Four LEDs provide a clear and complete indication of the unit’s operating status.
The dual-channel monaural mode allows the two Dante input audio channels to be summed (mixed together) and sent to both the left and right headphone output channels. And lastly, a unique singlechannel monaural mode is provided for on-air talent cue applications where a single-channel earpiece or earbud is being used. The two Dante audio input channels are mixed and sent only to the left channel of the headphone output. No audio signal is present on the headphone output’s right channel.
362’s circuitry. A 10BASE-T connection is not sufficient and a 1000BASE-T (“GigE”) connection is not supported unless it can automatically “fall back” to 100BASE-TX operation. The Model 362 supports Ethernet switch power management, enumerating itself as a PoE class 1 device. The Ethernet connection is made by way of a Neutrik etherCON protected RJ45 connector that is located on the bottom of the Model 362’s enclosure.
is available for download free of charge at www.audinate.com. Versions of Dante Controller are available to support Windows® and OS X® operating systems. The Model 362 uses the Ultimo 2-input/2-output integrated circuit to implement the Dante architecture although the two outputs will not be utilized. The two Dante receiver (Rx) channels associated with the Model 362’s audio inputs need to be routed to the desired source equipment’s Dante transmitter channels.
configuration choices have been made. Note that the threaded fastener within the back of the Model 362’s chassis has an internal locking mechanism (a plastic bushing) that prevents the belt clip’s 6-32 machine screw from vibrating loose. As such no additional method of thread locking, such as a lock washer or chemical compound, is necessary. Level/Balance The level/balance mode is provided for stereo applications such as live music events or radio broadcasts.
adjusts the level of input 1 and potentiometer Ch 2 adjusts the level of input 2. Headphone Minimum Level Switch SW3 is used to configure the headphone output’s minimum level. In the –40 dB setting the minimum headphone output level is approximately 40 dB below maximum; the headphone output channels will never fully mute. This ensures that audio signals, when present on the inputs, will always be present on the headphone output channel.
Ethernet and Dante Status LEDs Three status LEDs are located below the etherCON RJ45 connector on the Model 362’s bottom panel. The LINK ACT LED will light green whenever an active connection to a 100 Mb/s Ethernet network has been established. It will flash in response to Ethernet data packet activity. The SYS and SYNC LEDs display the operating status of the Dante interface and associated network. The SYS LED will light red upon Model 362 power up to indicate that the Dante interface is not ready.
The two pots are “push-in/push-out” type which allow their associated knobs to be in their “out” position to be adjusted and their “in” position when protection from an unwanted change is desired. Users should find the headphone output audio quality to be excellent, with high maximum output level and low distortion. Analog audio signals do not pass directly through the level pots.
Optimizing Network Performance Updating the Application Firmware For best Dante audio-over-Ethernet performance a network that supports VoIP QoS capability is recommended. This can typically be implemented on virtually all contemporary managed Ethernet switches. There are even specialized switches that are optimized for entertainment-associated applications. Refer to the Audinate website (www.audinate.com) for details on optimizing networks for Dante applications.
Ultimo Firmware Update As previously discussed in this guide, the Model 362 implements Dante connectivity using the 2-channel Ultimo integrated circuit from Audinate. The Dante Controller software application can be used to determine the version of the firmware (embedded software) residing in the Ultimo “chip.” This firmware can be updated by way of the Model 362’s Ethernet connection. The latest Dante firmware file will be available on the Studio Technologies website.
