User Guide

Issue 4, February 2021 Model 374A User Guide
Page 24 Studio Technologies, Inc.
MODEL 374A
INTERCOM BELTPACK
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
AES67-2018 Support: yes
Dante Domain Manager (DDM) Support: yes
Bit Depth: up to 24
Sample Rate: 48 kHz
Number of Transmitter (Output) Channels: 4
Number of Receiver (Input) Channels: 4
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: 4 talk, 4 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: 2-channel
Compatibility: intended for connection to ste-
reo (dual-channel) or monaural (single-channel)
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:
Receive Support: channels 1-4
Send Support: channels 1-3
Signaling Method: 20 kHz, ±800 Hz, within audio
channels
Receive Level: –27 dBFS minimum
Send Level: –20 dBFS
Connectors:
Headset: 5-pin female XLR
Ethernet: Neutrik NE8FBH etherCON RJ45
receptacle
USB: type A receptacle (located inside Model
374A’s enclosure and used only for application
firmware updates)
Configuration: requires Studio Technologies’
STcontroller software application
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 374A to be
permanently mounted
Weight: 0.6 pounds (0.3 kg)
Specifications and information contained in this
User Guide subject to change without notice.