Installation, cont’d
System 7SC • Installation2-6
3

Audio inputs 1 through 6 — Each input has a 3.5 mm, 5-pole captive screw

connector for balanced or unbalanced stereo audio input. Connectors are

included with each System 7, but the user supplies the audio cable. See the

following wiring diagrams to wire a connector for the appropriate input type

and impedance level. High impedance is generally over 800 ohms.

LR
AUDIO
LR
AUDIO
LR
AUDIO
Unbalanced Input
Tip
Sleeve
Tip
Sleeve
Balanced Input
Tip
Ring
Sleeve (s)
Tip
Ring
Tip
Ring
Sleeve (s)
Tip
Ring
Balanced Input
(high impedance) (high impedance) (600 ohms)600 ohms600 ohms

Captive screw connector wiring for rear panel audio inputs

RS-232
PROJ CONTROL
CONTACT CLOSURE
RELAY 1 RELAY 2
12
DISPLAY PWR
SENSOR
IR COMM
RGB
H/HV
V
INPUTS
SCP/AAP CONTROL
OUTPUTS
RGB
LR
12345 ABCDEABCDE67
EDCBA ABCDEFGHIJ
FIXED VARIABLE
EDCBAEDCBA
R
R-Y
G/Y
VID
H/HV
V
B/C
B-Y
R
R-Y
G/Y
VID
H/HV
V
B/C
B-Y
R
R-Y
G/Y
VID
H/HV
V
B/C
B-Y
456
LR
AUDIO OUT

4

1 2 3

1

Line level audio output (Fixed) — For unamplified audio output, connect an

audio device, such as an audio recorder, VCR, or powered speakers, to this

3.5 mm, 5-pole captive screw connector. Follow the diagram below for correct

wiring.

Unbalanced Output
Tip
See Warning
Sleeve (s)
Tip
See Warning
Balanced Output
Tip
Ring
Sleeve (s)
Tip
Ring
LR
AUDIOAUDIO
LR

Connect the sleeve to ground (Gnd). Connecting the sleeve to a

negative (-) terminal will damage the audio output circuits.

The gain can be set separately for each input channel so that there is no

audible difference in level when switching between inputs. See chapter three,

“Operation and Configuration”, for information on adjusting the audio

output level via LCD menu and front panel controls. See chapter four, “Serial

Communication”, for information on using the Simple Instruction Set (SIS)

commands and the Windows-based control/configuration program to adjust

audio levels and to set audio breakaway.

The Fixed audio output and the Variable audio output are simultaneously

active, therefore two devices can be connected at the same time. Both outputs

carry the same input’s audio signal.

Outputs