Studio Technologies 42A 2008 - Manual (Page 23)

Model 42A User Guide Issue 2, February 2008
Studio Technologies, Inc. Page 23
Connectors:
Audio Inputs: 25-pin D-subminiature female,
4-40 threads
IFB Outputs: 8 (two per IFB circuit), 3-pin male
XLR-type
Headphone Output: ¼-inch 3-conductor phone
jack
AC Mains: 3-blade, IEC 320 C14-compatible
(mates with IEC 320 C13)
AC Mains Requirement: 100-230 volts, 50/60 Hz,
0.7 amperes maximum @ 100 volts, 0.4 amperes
maximum @ 230 volts
Dimensions (Overall):
19.00 inches wide (48.3 cm)
1.72 inches high (4.4 cm)
9.58 inches deep (24.3 cm)
Mounting: one space in a standard 19-inch rack
Weight: 6.8 pounds (3.1 kg)
Specifications and information contained in this
User Guide subject to change without notice.
Specifications
General Audio:
Frequency Response:
Pin 2 Outputs (DC with Channel 1 Audio):
20 Hz-20 kHz ±2.5 dB (80 Hz-20 kHz ±0.25 dB)
Pin 3 Outputs (Channel 2 Audio): 20 Hz-20 kHz
±0.25 dB
Distortion (THD+N): 0.01%, measured at 1 kHz,
+4 dBu, pin 2 outputs (DC with channel 1 audio)
S/N Ratio: 80 dB, ref +4 dBu out, 20 Hz-20 kHz,
pin 2 outputs (DC with channel 1 audio)
Crosstalk: 81 dB, typical, ref +4 dBu in,
20 Hz-20 kHz
Audio Inputs: 8, organized as four 2-channel
inputs
Type: transformer balanced, compatible with
balanced or unbalanced sources
Impedance: 10 k ohms, nominal
Nominal Level: +4 dBu
IFB Output Circuits: 4
Type: DC power with two channels of unbalanced
audio
Connections: common on pin 1, DC (+30 V
nominal) modulated with channel 1 audio (–10 dBu
nominal) on pin 2, and channel 2 audio (–10 dBu
nominal) on pin 3
Maximum Audio Output Level:
Pin 2: +9 dBu with +23 dBu on audio input
Pin 3: +14 dBu with +28 dBu on audio input
DC Current Output: 200 milliamperes maximum
Monitor Section – Headphone Output:
Type: 2-channel (stereo), drives headphones by
way of 100 ohm series resistors
Compatibility: intended for connection to head-
phones with impedance of 100 ohms or greater
Maximum Voltage: 8 volts peak-to-peak, 100 ohm
load
Monitor Section – Output Voltage Detection:
Measures DC voltage level directly on pin 2 of IFB
circuit output connector pairs. Status LEDs flash
when level is less than approximately 24 volts DC.