Studio Technologies Model 371A Beltpack (4-Pin Male)

About: Studio Technologies Model 371A Beltpack (4-Pin Male)

The Model 371A Intercom Beltpack begins with the features offered by 2-channel broadcast-style party-line intercom user devices then adds support for traditional single-channel headsets. Applications that have traditionally deployed single-channel analog party-line intercom systems from firms such as Clear-Com® can now easily upgrade to a high-performance dual-channel system. To maintain compatibility and user familiarity, legacy headsets that use a 4-pin female XLR connector are directly compatible.

Key Features

• Dante audio-over-Ethernet technology
• Two independent talk and listen channels
• Integrated call function
• Supports dynamic and electret microphones
• 4-pin male XLR headset connector
• Excellent audio quality
• Uses STcontroller for configuration
• AES67 and Dante Domain Manager™ support
• Power-over-Ethernet (PoE) powered

Specifications:

Power Source:
Power-over-Ethernet (PoE): class 1 (very low power, ≤3.84 watts) per IEEE® 802.3af

Network Audio Technology:
Type: Dante audio-over-Ethernet
AES67-2013 Support: yes
Dante Domain Manager (DDM) Support: yes
Bit Depth: up to 24
Sample Rate: 48 kHz
Number of Transmitter (Output) Channels: 2
Number of Receiver (Input) Channels: 2
Dante Audio Flows: 4; 2 transmitter, 2 receiver

Network Interface:
Type: 100BASE-TX, twisted-pair Ethernet, Power-over-Ethernet (PoE) supported
Data Rate: 100 Mb/s (10 Mb/s and 1000 Mb/s "GigE" Ethernet not supported)

Audio Channels: 2 talk, 2 listen

Microphone Input:
Compatibility: dynamic or electret (low-voltage DC-powered) microphones
Type: unbalanced
Electret Microphone Power: 5 volts DC via 2.21 k resistor, selectable on/off
Gain: 22, 30, 42, or 48 dB, selectable, ref. –60 dBu input to Dante output (–20 dBFS nominal)
Frequency Response: 50 Hz to 10 kHz, –3 dB
Distortion (THD+N): <0.02%
Dynamic Range: 75 dB

Compressor:
Threshold: 1 dB above nominal level (–19 dBFS)
Slope: 2:1
Status LED: compressor active

Headphone Output:
Type: single-channel (sum (combination) of audio input 1 and audio input 2)
Compatibility: intended for connection headsets with nominal impedance of 50 ohms or greater
Maximum Output Voltage: 3.8 Vrms, 1 kHz, 150 ohm load
Frequency Response: 20 Hz to 10 kHz, –3 dB
Distortion (THD+N): <0.002%
Dynamic Range: >100 dB

Call Function:
Signaling Method: 20 kHz, ±800 Hz, within audio channels
Call Send Level: –20 dBFS
Call Receive Level: –27 dBFS minimum

Connectors:
Headset: 4-pin male XLR (Associated headset requires cable-mounted 4-pin female XLR connector wired with pin 1 mic –/shield/screen; pin 2 mic +; pin 3 headphone –; and pin 4 headphone +)
Ethernet: Neutrik NE8FBH etherCON RJ45 receptacle
USB: type A receptacle (located inside l 371A's enclosure and used only for application firmware updates)

Configuration: requires Studio Technologies STcontroller software application, version 1.06.00 and later (STcontroller is compatible with Windows version 7 and later)

Environmental:
Operating Temperature: 0 to 50 degrees C (32 to 122 degrees F)
Storage Temperature: –40 to 70 degrees C (–40 to 158 degrees F)
Humidity: 0 to 95%, non-condensing
Altitude: not characterized

Dimensions (Overall):
3.6 inches wide (9.2 cm)
1.6 inches high (4.0 cm)
4.8 inches deep (12.6 cm)

Mounting: intended for portable applications; contains integral belt clip; optional MBK-01 Mounting Bracket Kit allows Model 371A to be permanently mounted

Weight: 0.6 pounds (0.3 kg)