Manual

Issue 2, March 2020 Model 381 User Guide
Page 22 Studio Technologies, Inc.
MODEL 381
ON-AIR BELTPACK
Specifications
Power Source:
Power-over-Ethernet (PoE): class 2 (low power,
≤6.49 watts)
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: 44.1,48, 88.2, and 96 kHz
Number of Transmitter (Output) Channels:
2
Description of Transmitter Channels:
main
(pre- or post-compressor, selectable), talkback
(post-compressor)
Number of Receiver (Input) Channels: 2
Description of Receiver Channels: headphone
channel 1 and headphone channel 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 10000 Mb/s
“GigE” Ethernet not supported)
Microphone Input:
Compatibility: dynamic or phantom-powered
microphones
Type:
balanced, capacitive coupled
Impedance: 2.8 k ohms, nominal
Gain: 36, 42, 48, 54, and 60 dB, selectable
Frequency Response: 30 Hz to 20 kHz, –3 dB at
30 Hz, –0.6 dB at 20 kHz
Distortion (THD+N): <0.020%, 1 kHz, 36 dB gain,
–32 dBu input level
Dynamic Range: 96 dB, A-weighted
Phantom Power: P48 per IEC 61938 standard, on/off
selectable with status LED
Compressor:
Application: always used for Dante talkback audio
output channel, can be used for Dante main output
channel
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 stereo
(dual-channel) or mono (single-channel) headphones,
headsets or earpieces with nominal impedance of
50 ohms or greater
Maximum Output Voltage: 3.1 Vrms, 1 kHz,
150-ohm load
Frequency Response: 20 Hz to 20 kHz, +0/–1 dB
Distortion (THD+N): 0.001%, +10 dBu output,
150-ohm load
Dynamic Range: >102 dB
Connectors:
Microphone Input: 3-pin female XLR
Headphone Output: ¼-inch 3-conductor jack
Ethernet: Neutrik etherCON RJ45
USB: type A receptacle (located inside Model 381’s
enclosure and used only for updating firmware)
Configuration: uses Studio Technologies’
STcontroller personal computer application, version
1.08.00 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) w/out 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.