Issue 6, September 2004
Model 50/51 User Guide
Page 36
Studio Technologies, Inc.
Specifications
Model 50 Central Controller
Audio Inputs:
7, stereo
Type:
electronically balanced, direct coupled,
compatible with balanced or unbalanced signals
Impedance:
24k ohms
Nominal Input Level:
–10dBV or +4dBu, each
stereo input individually software configurable
Common Mode Rejection:
100dB @ DC and
60Hz, 70dB @ 20kHz, 62dB @ 40kHz (typical)
Control Room Outputs:
2, stereo
Type:
electronically balanced, intended to
drive loads of 600 ohms or greater, balanced
or unbalanced
Nominal Level:
unity gain, audio inputs to control
room outputs
Maximum Output Level:
+27dBu into 10k ohms,
+26dBu into 600 ohms
Frequency Response:
10Hz-40kHz +0/–0.5dB
(down 1dB @ 80kHz)
Distortion (THD+N):
0.03% (measured at +4dBu
input, +4dBu output)
S/N Ratio:
87dB (20Hz-20kHz)
Studio Output:
1, stereo
All other specifications identical to control room
outputs
Meter Output:
1, stereo
Type:
unbalanced, intended to drive loads of
2k ohms or greater
Nominal Output Level:
+4dBu
Maximum Output Level:
+21dBu into 10k ohms
Frequency Response:
10Hz-40kHz, +0/-0.5dB
(down 1dB @ 70kHz)
Distortion (THD+N):
0.004% (measured at
+4dBu input, +4dBu output)
S/N Ratio:
92dB (20Hz-20kHz)
Talent Amplifier Output:
Application:
provides power and audio signals for
up to four Model 35 or Model 38 Talent Amplifiers.
The output connector (3-pin XLR-type, male) has
common on pin 1, +23Vdc modulated with left
channel audio at –10dBu on pin 2, and right chan-
nel audio at –10dBu on pin 3. Maximum output
current 200mA (nominal).
Dub Output:
1, stereo, located on both the front
and back panels
Type:
electronically balanced, direct coupled,
intended to drive loads of 600 ohms or greater,
balanced or unbalanced
Nominal Output Level:
–10dBV or +4dBu,
software configurable
Maximum Output Level:
+27dBu into 10k ohms,
+26dBu into 600 ohms
Frequency Response:
10Hz-40kHz +0/–0.5dB
(down 1dB @ 80kHz)
Distortion (THD+N):
0.004% (measured at
+4dBu input, +4dBu output)
S/N Ratio:
92dB (20Hz-20kHz)
Slate Tone:
Type:
50Hz sine wave
Level:
10dB below slate communications audio
level (nominal)
LED Indicators:
7, power present, control con-
sole over current, talent amp over current, input
data present, Model 50 input data present, input 7
+4dBu, dub 4dBu
Connectors:
Audio Inputs and Outputs and Mic Module:
¼
-inch, 3-conductor phone jacks. Mates with all
plugs specified by EIA RS-453.
Talent Amplifier Output:
3-pin XLR-type, male
Control Console/MIDI In:
5-pin DIN-type, female
AC Mains:
3-blade IEC-type
AC Mains Requirement:
100, 120, or 220/240V, ±10%, factory configured,
50/60Hz, 100-120V 0.4A maximum, 220/240V 0.2A
maximum
