Manual

Issue 1, April 2019 Model 372A User Guide
Page 21 Studio Technologies, Inc.
MODEL 372A
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
AES67-2013 Support: yes
Dante Domain Manager (DDM) Support: yes
Bit Depth: up to 24
Sample Rate: 48 kHz
Number of Transmitter (Output) Channels:
1
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)
Compatibility – Headset A: single- or dual-ear
broadcast-style with dynamic or electret (low-voltage
DC-powered) microphone: pin 1 mic common; pin 2
mic; pin 3 phones common; pin 4 phones left; pin 5
phones right
Compatibility – Headset B: CTIA™/AHJ configura-
tion (typically uses electret powered mic): tip phones
left; ring 1 phones right; ring 2 common; sleeve mic
Audio Channels: 1 talk, 2 listen
Microphone Input:
Compatibility: dynamic or electret (low-voltage
DC-powered) microphones
Type:
unbalanced
Electret Microphone Power: 3.3 volts DC via 2.00 k
resistor, selectable on/off
Impedance: 1 k ohms, nominal, microphone power
off; 690 ohms, nominal, microphone power on
Gain: 24, 30, 36, 42, or 48 dB, selectable, ref.
–60 dBu input to Dante output (–20 dBFS nominal)
Frequency Response: 40 Hz to 20 kHz, –3 dB
Distortion (THD+N): <0.02% (at minimum gain)
Dynamic Range: 91 dB of dynamic range
Compressor:
Application: applies to Dante transmitter (output)
channel and sidetone audio
Threshold: 2 dB above nominal level (–19 dBFS)
Slope: 2:1
Status LED: compressor active
Headphone Output:
Type:
2-channel
Compatibility: intended for connection to stereo
(dual-channel) or monaural (single-channel) headsets
with nominal impedance of 50 ohms or greater
Maximum Output Voltage: 2.8 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 Receive Function:
Implementation: monitors both Dante receiver (input)
channels for presence of call signals
Signaling Method: 20 kHz, ±800 Hz, within audio
channels
Call Receive Level: –27 dBFS minimum
Connectors:
Headset A:
5-pin female XLR
Headset B: 4-conductor (TRRS) 3.5 mm jack, per
Japanese standard JEITA/EIAJ RC-5325A
Ethernet: Neutrik NE8FBH etherCON RJ45 receptacle
USB: type A receptacle (located inside Model 372A’s
enclosure and used only for application firmware
updates)
Configuration: requires Studio Technologies’
STcontroller software application, version 2.01.00
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):
3.1 inches wide (7.9 cm)
1.5 inches high (4.0 cm) without belt clip;
1.8 inches (4.6 cm) with belt clip
4.9 inches deep (12.5 cm)
Deployment: intended for portable applications;
contains integral belt clip
Weight:
0.5 pounds (0.23 kg)
Specifications and information contained in this User
Guide subject to change without notice.