Manual
Table Of Contents
Model 44D User Guide Issue 3, August 2018
Studio Technologies, Inc. Page 25
Specifications
Power Sources:
Power-over-Ethernet (PoE): class 1 (very low
power, ≤3.84 watts) per IEEE 802.3af
External: 10 to 18 volts DC, 0.3 amp maximum
at 12 volts DC
Network Audio Technology:
Type: Dante audio-over-Ethernet
Bit Depth: up to 24
Sample Rates: 44.1 and 48 kHz
Number of Receiver (Input) Channels: 2
Number of Transmitter (Output) Channels: 2
Dante Audio Flows: 4; 2 receiver, 2 transmitter
Network Interface:
Type: twisted-pair Ethernet, Power-over-Ethernet
(PoE) supported
Data Rate: 100 Mb/s (10 Mb/s not supported;
1000 Mb/s “GigE” Ethernet not supported unless
falls back to 100 Mb/s)
Line Inputs: 2
Type:
analog, electronically balanced, capacitor
coupled
Impedance: 20 k ohms, nominal
Nominal Level: +4 dBu, reference –20 dBFS or
0 dBu, reference –18 dBFS, configurable
Maximum Level: +24 dBu when configured for
+4 dBu nominal, +18 dBu when configured for
0 dBu nominal
Dynamic Range: >114 dB, A-weighted
Distortion (THDS+N): <0.002% (–95 dB),
measured at –1 dBFS, 22 kHz bandwidth
Frequency Response:
+0.0 dB/–0.5 dB, 20 Hz
to 20 kHz; 10 kHz low-pass filters disabled
Low-Pass Filters: –3 dB @ 10 kHz, –55 dB @
20 kHz, configurable on or off in tandem with
line output filters
Line Outputs: 2
Type: analog, electronically balanced, capacitor
coupled, intended to drive balanced or unbalanced
loads of 2 k ohms or greater.
Source Impedance: 200 ohms
Nominal Level: +4 dBu, reference –20 dBFS, or
0 dBu, reference –18 dBFS, configurable
Maximum Level: +24 dBu when configured for
+4 dBu nominal, +18 dBu when configured for
0 dBu nominal
Dynamic Range: >114 dB, A-weighted
Distortion (THDS+N): 0.003% (–90 dB),
measured at –1 dBFS, 22 kHz bandwidth
Frequency Response:
±0.1 dB, 20 Hz to 20 kHz,
10 kHz low-pass filter disabled
Low-Pass Filters: –3 dB @ 10 kHz, –55 dB @
20 kHz, configurable on or off in tandem with
line input filters
Tone Generator:
Type: sine-wave
Frequency: 18 kHz ±350 mHz; 20 kHz ±350 mHz
Analog Output Level: +4 dBu, nominal
Analog Output Distortion (THD+N): <0.003%
Digital Output Level (Dante transmitter
(Output)): –20 dBFS
Digital Output Distortion (THD+N): <0.0001%
Meters: 4
Function: displays level of line inputs and line
outputs in dBFS
Type: 5-segment LED, modified VU ballistics
GPI: 2
Type: logic input, pulled to +3.3 volts DC through
3.3 k (3300 ohm) resistor, pull down to common
to enable
Signaling Method: tones summed into Dante
transmitter audio path, 20 kHz nominal at 48 kHz
sampling rate, 18.375 kHz nominal at 44.1 kHz
sampling rate