7
8 x 2A Dual Stereo Audio Switcher Installation Manual
Broadcast Tools, Inc.
Parallel remote control
All functions on the
8 x 2A Dual Stereo audio switcher
may be remote controlled via a rear
panel 25 pin D-connector. The
8 x 2A Dual Stereo audio switcher
accepts momentary
contact closures, open collector or TTL/CMOS logic levels. Open collector tally is also
provided.
The remote connector provides a step input. By pulsing the “STEP” input to ground,
the unit will increment one source for each low to high transition on this input.
Automatic sequencing may be accomplished by holding the step input low for two
seconds. The unit will now step to each source at a two second rate, allowing you to
automatically preview each source. The step input is helpful in freeing up valuable
remote control channels.
CONTROL
STATUS
J2 Pin #:
J2 Pin #
1
-
Switch 1
13
-
Ground
2
-
Switch 2
14
-
Status 1
3
-
Switch 3
15
-
Status 2
4
-
Switch 4
16
-
Status 3
5
-
Switch 5
17
-
Status 4
6
-
Switch 6
18
-
Status 5
7
-
Switch 7
19
-
Status 6
8
-
Switch 8
20
-
Status 7
9
-
Switch F1
21
-
Status 8
10
-
Switch F2
22
-
Ground
11
-
Mute Switch
23
-
Ground
12
-
Step Switch
24
-
Ground
25
-
Chassis Ground
