Model 354 Talk Station User Guide Issue Preliminary 1. August 2021 This User Guide is applicable for serial numbers M354-00151 and later with Application Firmware 1.00 and later Copyright © 2021 by Studio Technologies, Inc., all rights reserved studio-tech.
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Model 354 TALK STATION Table of Contents Revision History ...................................................................................................................... 4 Introduction ............................................................................................................................. 5 Getting Started ........................................................................................................................ 8 Dante Configuration ...............................
Model 354 TALK STATION Revision History Issue Preliminary, August 2021: • Initial preliminary release. Issue Preliminary 1, August 2021 Page 4 Model 354 User Guide Studio Technologies, Inc.
Model 354 TALK STATION Introduction The Model 354 Talk Station is a unique product intended to support a variety of voice paging, background music, audio-file playback, broadcast talent cueing (IFB), and general audio applications. The unit supplies four independent “talk” channels that can be individually configured to match the needs of an application. A simple monitor section allows one of the four Dante® receiver (input) channels to be routed as desired to a connected amplifier or amplified speaker.
Model 354 TALK STATION Setup and Operation Figure 2. Model 354 Talk Station shown with optional GME-3-12 Gooseneck Microphone Broadcast applications can utilize the Model 354 to create a simple 4-channel talent cue (IFB) master station. “Program” audio sources can be routed to the unit’s Dante receiver (input) channels and then interrupted with gooseneck microphone audio as desired. Deployment of Dante applications could benefit from the unit’s ability to store and playback WAV audio files.
Model 354 TALK STATION and four Dante receiver (input) channels can be assigned (routed or “subscribed”) to other devices using the Dante Controller software application. The Dante transmitter (output) and receiver (input) channels are limited to supporting four Dante flows, two in each direction. The digital audio’s bit depth is up to 32 with a sampling rate of 48 kHz. Two bi-color LEDs provide an indication of the Dante connection status.
Model 354 TALK STATION ing international applications where compliance to specific regulatory requirements is required. This may dictate which LED color is associated with a function being “on” and which color is associated with a function being “off.” The four Dante receiver (input) audio sources and the way in which they are assigned to the monitor outputs can be configured from among five choices. These unique choices allow a number of audio monitoring situations to be implemented.
Model 354 TALK STATION unidirectional, electret microphone was designed specifically to maximize voice reproduction in intercom, voice paging, and related applications. To minimize the impact of breath noise, a foam windscreen is included with each GME-3-12. From the factory a plastic hole plug is pressed into the Model 354’s gooseneck bushing. This protects the connector and internal circuitry from having undesirable material such as dirt, dust, or foreign objects enter the unit.
Model 354 TALK STATION integrated level control, the analog monitor output’s signal is “pre-fader,” that is with no interaction from the Model 354’s level control. In the Fixed 0 (Pre-Fader) mode the monitor output has a fixed nominal output level of 0 dBu. This can be useful as a “professional” line-level output for connection with audio routers, intercom systems, audio transport equipment, or a local monitoring system.
Model 354 TALK STATION Device Configuration The Model 354 supports an audio sample rate of 48 kHz with no pull-up/down options available. The unit’s digital audio data is in the form of pulse-code modulation (PCM) samples. Encoding choices within Dante Controller are PCM 16, PCM 24, and PCM 32, but in most cases the selection of PCM 24 would be appropriate. Clocking and device latency parameters can be adjusted within Dante Controller, if required, but the default values are typically correct.
Model 354 TALK STATION intensity of these LEDs, as a group, to be selected. Deciding which choice, low or high, is optimal will typically depend on the amount of ambient light that is present in the area where the Model 354 is located. System – Button LED Action Choices are: Red when Off/Green when On Green when Off/Red when On Unlit when Off/Green when On Unlit when Off/Red when On The action of the red and green LED indicators associated with the four pushbutton switches can be configured.
Model 354 TALK STATION Monitor Output – Program Audio Source Choices are: None, Ch 1, Ch 2, Ch 3, Ch 4, Selectable Ch 1 – Ch 3 (Uses Ch 4 Button) not change a change to occur.) Selecting Full Mute would effectively make this dim function be a monitor output mute function. This configuration selection relates to the audio source that is associated with the analog monitor output and, in some circumstances, the Dante monitor output.
Model 354 TALK STATION to the level of the information stored in File 1. This configuration choice allows the level of the preamble audio provided in File 1 to be adjusted relative to the microphone audio level. Preamble Audio – File 2 Level Trim Choices are: –12 dB, –9 dB, –6 dB, –3 dB, 0 dB, 3 dB, 6 dB, 9 dB, 12 dB This configuration choice functions the same as the previous configuration but applies to File 2.
Model 354 TALK STATION Preamble Audio Only (Play Once, Interruptible): In this mode when the channel’s pushbutton switch becomes active the selected preamble audio file will play once and then stop. Changing the pushbutton switch to its inactive state when the preamble audio file is actively playing will cause it to immediately stop. Microphone audio will never become active.
Model 354 TALK STATION high-frequency sine-wave audio tones that are added to the Dante transmitter (output) channels. The presence of these tones can be selected such that the status of a Model 354 channel can be communicated to a connected device. These status signals allow the unit to be integrated into a range of local and remote applications. Used in conjunction with the Studio Technologies’ Model 5422A Dante Intercom Audio Engine, it would be simple to create REMI or At-Home functions.
Model 354 TALK STATION be assigned using the link-local protocol. This protocol is known in the Microsoft® world as Automatic Private IP Addressing (APIPA). It is also sometimes referred to as auto-IP (PIPPA). Link-local will randomly assign a unique IP address in the IPv4 range of 169.254.0.1 to 169.254.255.254. In this way, multiple Dante-enabled devices can be connected together and automatically function, whether or not a DHCP server is active on the LAN.
Model 354 TALK STATION MCU updates its application firmware using a file named M354XvXX.stm where Xs are decimal digits that represent the version number. The update process begins by preparing a USB flash drive. The flash drive doesn’t have to be empty (blank) but must be in the personal-computer-standard FAT32 format. The processor in the Model 354 is compatible with USB 2.0, USB 3.0, and USB 3.1-compliant Flash drives. Save the new firmware file in the root folder with a name of M354vXrXX.
Model 354 TALK STATION Specifications Applications: Dante-based voice paging, intercom, talent cue (broadcast IFB), and general audio installations Power Source: Power-over-Ethernet (PoE), class 1 (very low power, ≤3.84 watts), per IEEE 802.
Model 354 TALK STATION Send Tone Frequencies: 16, 18, and 20 kHz, sine-wave Dimensions: 3.6 inches wide (9.1 cm) 2.7 inches high (6.9 cm) 4.7 inches deep (11.9 cm) Send Tone Frequency Accuracy: <10 ppm Deployment: intended for tabletop applications Send Tone Level: –20 dBFS, nominal Weight: 1.1 pounds (0.50 kg) without gooseneck microphone; 1.4 pounds (0.64 kg) with GME-3-12 gooseneck microphone Channel Status Signals: Action: independently configurable per channel Send Tone Distortion: <0.
Model 354 TALK STATION Appendix A–STcontroller Default Configuration Values General Microphone Input – Preamplifier Gain: 24 dB System – Button LED Intensity: High System – Button LED Action: Red when Off/Green when On Monitor Output – Overall Leve: Adjustable (Post-Fader) Monitor Output – Program Audio Source: None Monitor Output – Program Audio Dim when Preamble or Mic Active: 0 dB Monitor Output – Preamble Audio Level: Off Monitor Output – Microphone Audio Level: Off Preamble Audio – File 1 Level Trim:
