Datasheet

Studio Technologies, Inc. Model 44D Audio Interface, Issue 3, Page 5
Studio Technologies, Inc.
Skokie, Illinois USA
© by Studio Technolog
ies, Inc., August 8, 2018
studio-tech.com
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 transmit-
ter audio path, 20 kHz nominal at 48 kHz sampling rate,
18.375 kHz nominal at 44.1 kHz sampling rate
GPO: 2
Output Type: solid-state relay contact
Contact Type: form A (normally open, not shorted),
isolated
Contact Rating: 400 mA, 60 volts AC/DC, maximum
Contact Resistance: 2 ohms, maximum
Detection Method: monitors Dante receiver audio
path for presence of 20 kHz (±800 Hz) tone at 48 kHz
sampling rate, 18.375 kHz (±800 Hz) tone at 44.1 kHz
sampling rate. Tones will pass to line outputs unless
low-pass filters enabled.
GPO Status LEDs: 2
Auxiliary DC Output:
Application: for use with GPO outputs
Type: 12 volts DC, nominal, 10-18 volts DC with external
power connected, 25 mA maximum
Connectors:
Line Inputs: 3-pin female XLR
Line Outputs: 3-pin male XLR
Ethernet: Neutrik etherCON RJ45
External DC: 4-pin male XLR
GPI/GPO/Aux DC: 9-pin female D-subminiature
(DE-9F)
USB: type A receptacle (located inside Model 44D’s
enclosure and used only for application firmware
updates)
Dimensions – Overall:
8.7 inches wide (22.1 cm)
1.72 inches high (4.4 cm)
8.3 inches deep (21.1 cm)
Mounting Options: single-unit rack-mount front
panel (M44DRM-1) and two-unit rack-mount front panel
(M44DRM-2); uses one space (1U) in a standard
19-inch rack
Weight: 1.8 pounds (0.80 kg); rack-mount front panels
add 0.2 pounds (0.09 kg)
Specifications subject to change without notice.