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GPIO Studio (Monitor 2) Guest Microphone Logic
Name
Pin
Type
Notes
ON Command
11
Active Low Input
Turns channel ON
INPUTS
OFF Command
12
Active Low Input
Turn channel OFF
TALK (to CR) Command
13
Active Low Input
Mutes channel outputs and
routes source audio to PVW
speakers
MUTE Command
14
Active Low Input
Mutes channel outputs
NOT CONNECTED
15
OUTPUTS
ON Lamp
1
Open Collector to Logic Common Return
Illuminates when channel is
ON unless TALK or MUTE is
active
OFF Lamp
2
Open Collector to Logic Common Return
Illuminates when channel is
OFF
TALK (to CR) Lamp
3
Open Collector to Logic Common Return
Illuminates when TALK is
active
MUTE Lamp
4
Open Collector to Logic Common Return
Illuminates when MUTE is
active
NOT CONNECTED
5
5: Configuring GPIO • 42
POWER & COMMON
Source Common
7
Logic Common
Connect to ground of source
device or to Pin 8
Logic Common
8
Internal 5 Volt return
Can be connected to Pin 7
if source is not providing
common
Logic + 5 Volt supply
9
Logic Supply, Individually
Fused
Can be connected to Pin 10 if
source is not providing voltage; active only when source
has been assigned to channel.
Source Supply
10
Common for all 5 inputs
Connect to power supply of
source device or to Pin 9
NOT CONNECTED
6
OUTPUT
COMMON
RETURN
OUT OUT OUT OUT OUT
5
4
3
2
1
N/C
ØV (GND)
SOURCE
8
7
15
IN
5
6
14
IN
4
5
13
IN
3
4
12
IN
2
3
11
IN
1
2
10
IN
COM
+
©2011 Axia Audio
1
9
+5 V
POWER
SOURCE
GPIO v.”ZA” 4/2009