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Console Logic
The DB-15 connector on the rear panel of the console has the logic & audio
signals required for supporting a talk studio and controlling the starting &
stopping of sources.
DB15 CONNECTOR PINOUT (Solder Cup)
8 7 6 5 4 3 2 1
15 14 13 12 11 10 9
CONSOLE BACK PANEL VIEW
PIN
DESCRIPTION
1
Control Room Mute Logic (will switch to Pin 13 ground)
2
Autocue Logic In (switch to ground to turn on)
3
Channel Eight Logic (+12VDC channel on, 0VDC channel off)
4
Channel Seven Logic (+12VDC channel on, 0VDC channel off)
5
Channel Six Logic (+12VDC channel on, 0VDC channel off)
6
Channel Five Logic (+12VDC channel on, 0VDC channel off)
7
Channel Four Logic (+12VDC channel on, 0VDC channel off)
8
Channel 3 Logic (+12VDC channel on, 0VDC channel off)
9
Channel 10 Logic (+12VDC channel on, 0VDC channel off)
10
Studio Monitor Left Audio Output
11
Studio Monitor Right Audio Output
12
Talkback audio from Mic 1 and Mic 2
13
Ground
14
+ 12 VDC
15
Talkback Audio Input to Cue
IMPORTANT- improper connection to console logic can damage the console.
Channel Logic
Channel 3,4,5,6,7,8, & 10 feature channel logic for use in talk studios or starting and stop-
ping source devices. The logic requires an interface circuit to be built by a qualified broad-
cast technician.
a) Remote Channel On-off w Tally
The circuit shown at the right will remotely turn a
console channel on and off and drive a tally lamp to
display the On-off satus.
b) Source Start-stop Circuit
The circuit shown at the right will close the relay for
~ 0.5 seconds to start & stop an audio source device
such as a CD player.
1N914
10uF
47K
+
2N3904
22K
22K
Channel
Logic
+12V
1K
1N914
22K
22K
2N3904
475
475
Channel
Logic
22.1k
+12V
START
+12V
10uF
47K
+
2N3904
22K
1.31
ON
+12V
OFF
+12V
1k
ON/OFF
TALLY
LED
2N3904
STOP
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