Issue 2, January 2015
Model 45DR User Guide
Page 22
Studio Technologies, Inc.
Specifications
Power Sources:
Power-over-Ethernet (PoE):
class 3 (medium
power) per IEEE 802.3af
External:
10 to 18 volts DC, 1.0 amp max @
12 volts DC
Network Audio Technology:
Type:
Dante Audio-over-Ethernet
Bit Depth:
up to 24
Sample Rate:
48 kHz
Number of Output (Transmitter) Channels:
2
Number of Input (Receiver) Channels:
2
Network Interface:
Type:
twisted-pair Ethernet, Power-over-Ethernet
(PoE) supported
Data Rate:
100 Mb/s (10 Mb/s Ethernet not
supported)
General Audio:
Frequency Response (PL to Dante):
–0.3 dB @
100 Hz (–4.8 dB @ 20 Hz), –2 dB @ 8 kHz (–2.6 dB
@ 10 kHz)
Frequency Response (Dante to PL):
–3.3 dB @
100 Hz (–19 dB @ 20 Hz), –3.9 dB @ 8 kHz
(–5.8 dB @ 10 kHz)
Distortion (THD+N):
<0.15%, measured at 1 kHz,
Dante input to PL interface pin 2 (0.01% pin 3)
Signal-to-Noise Ratio:
>65 dB, A-weighted,
measured at 1 kHz, Dante input to PL interface
pin 2 (73 dB, PL interface pin 3)
Party-Line (PL) Intercom Interface:
Type:
2-channel analog PL, unbalanced (pin 1
common; pin 2 DC with channel 1 audio; pin 3
channel 2 audio)
Compatibility:
2-channel PL intercom systems
such as those offered by RTS®
Power Source:
29 volts DC, 240 mA maximum
Impedance – Local PL Power Not Enabled:
>10 k ohms
Impedance – Local PL Power Enabled:
200 ohms
Analog Audio Level:
–10 dBu, nominal, +3 dBu
maximum, PL interface pin 2 (+7 dBu, PL interface
pin 3)
Call Light Signal Support:
20 kHz, ±1%
Mic Kill Signal Support:
24 kHz, ±1%
Party-Line (PL) Hybrids:
2
Topology:
3-section analog circuitry compensates
for resistive, inductive, and capacitive loads
Nulling Method:
automatic upon user initiation,
processor implements digital control of analog
circuitry; settings stored in non-volatile memory
Nulling Line Impedance Range:
120 to 350 ohms
Nulling Cable Length Range:
0 to 3500 feet
Trans-Hybrid Loss:
>50 dB, typical at 800 Hz,
PL interface pin 2 (>55 dB, PL interface pin 3)
Meters:
4
Function:
displays level of audio input and output
channels
Type:
5-segment LED, modified VU ballistics
Connectors:
Party-Line (PL) Intercom:
3-pin male and female
XLR
Ethernet:
Neutrik etherCON RJ45
External DC:
4-pin male XLR
USB:
type A receptacle
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- or dual-unit rack-mount
front panels; uses one space (1U) in a standard
19-inch rack
Weight:
1.7 pounds (0.77 kg); rack-mount front
panels add 0.2 pounds (0.09 kg)
Specifications and information contained in this
User Guide subject to change without notice.
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