GPIO Telephone Hybrid Logic
Name
INPUTS
ON Command
OFF Command
PREVIEW Command
RESET Command
READY Command
OUTPUTS
ON Lamp
OFF Lamp
PREVIEW Lamp
START Pulse
STOP Pulse
POWER & COMMAND
Source Common
Logic Common
Logic + 5 Volt supply
Source Supply
NOT CONNECTED
Pin
11
12
13
14
15
1
2
3
4
5
7
8
9
10
6
OUTPUT
COMMON
OUT
RETURN
N/C
ØV (GND)
SOURCE
8
7
6
15
14
13
IN
IN
IN
5
4
3
©2016 Axia Audio- Rev 1.8.1
Type
Active Low Input
Active Low Input
Active Low Input
Active Low Input
Active Low Input
Open Collector to Logic Com-
mon Return
Open Collector to Logic Com-
mon Return
Open Collector to Logic Com-
mon Return
Open Collector to Logic Com-
mon Return
Open Collector to Logic Com-
mon Return
Logic Common
Internal 5 Volt return
Logic Supply, Individually
Fused
Common for all 5 inputs
OUT
OUT
OUT
OUT
5
4
3
2
1
5
4
3
2
1
12
11
10
9
IN
IN
IN
+5 V
2
1
COM
POWER
+
SOURCE
Notes
Turns channel ON
Turns channel OFF
Turns preview ON
Turns channel off while not
sending a STOP pulse
Illuminates OFF lamp to indi-
cate source's readiness
Illuminates when channel is
ON
Illuminates when channel is
OFF
Illuminates when PREVIEW
is ON
A 100 ms PULSE is sent when
channel is first turned ON or
when PVW is first selected
(if "PVW answers" option is
selected).
A 100 ms PULSE sent when
channel is turned OFF.
Connect to ground of source
device or to Pin 8
Can be connected to Pin 7 if
source is not providing com-
mon
Can be connected to Pin 10
if source is not providing
voltage; active only when
source has been assigned to
channel.
Connect to power supply of
source device or to Pin 9
GPIO v."ZA" 4/2009
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