Studio Technologies 42A 2013 - Manual (Page 22)

Issue 2, December 2013 Model 42A User Guide
Page 22 Studio Technologies, Inc.
Specifications
General Audio:
Frequency Response – Pin 2 Output
(DC with Channel 1 Audio):
+0/–3 dB, 20 Hz-20 kHz; +0/–1 dB, 100 Hz-20 kHz
Frequency Response – Pin 3 Output
(Channel 2 Audio):
+0/–3 dB, 20 Hz-20 kHz; +0/–1 dB, 100 Hz-20 kHz
Distortion (THD+N) – Pin 2 Output:
(DC with Channel 1 Audio):
0.05%, measured at 1 kHz, +4 dBu
S/N Ratio – Pin 2 Output:
(DC with Channel 1 Audio):
86 dB, ref +4 dBu out, A-weighted
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 Outputs: 4
Type: DC power with two channels of unbalanced
audio (“wet” IFB)
Connections:
Pin 1: common
Pin 2: 30 volts DC (nominal) modulated with
channel 1 audio (–10 dBu nominal)
Pin 3: channel 2 audio (–10 dBu nominal)
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: 220 mA 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 Vpp, 100 ohm load
Monitor Section – Output Voltage Detection:
Measures DC voltage level directly on pin 2 of IFB
output connector pairs. Status LEDs flash when
level is less than approximately 24 volts DC.
Connectors:
Audio Inputs: 25-pin female D-subminiature,
4-40 threads on locking hardware (two places)
IFB Outputs: 8 (two per IFB output), 3-pin male XLR
Headphone Output: ¼-inch 3-conductor phone
jack
AC Mains: 3-blade, IEC 320 C14 (mates with IEC
320 C13 connector)
AC Mains Requirement: 100-240 volts (±10%),
50/60 Hz, 40 watts maximum
Dimensions (Overall):
19.00 inches wide (48.3 cm)
1.72 inches high (4.4 cm)
6.4 inches deep (16.3 cm)
Mounting: one space (1U) in a standard 19-inch
rack enclosure
Weight: 3.7 pounds (1.7 kg)
Specifications and information contained in this
User Guide subject to change without notice.