NXC-VOL4 Volume Control Card
38
NetLinx Cardframe, Control Cards, and NetModules
Pinouts, Signals, and Functions
NXC-VOL4 Connections/Wiring
The NXC-VOL4 card contains four audio volume control channels.
Each line-level channel is isolated from system ground and can be configured for balanced or unbalanced line
operation. It supports programmable audio levels, audio mute, variable ramp speeds, and preset levels.
Each audio channel's input to output gain ratio is adjustable via the on-board jumpers shown in FIG. 8 on
page 37.
NXC-VOL4 Pinouts, Signals, and Functions
Pin
Signal
Balanced Function
Unbalanced Function
Channel 1
1
GND
Audio GND
Audio GND
2
Input 1+
Audio IN
Audio IN
3
Input 1-
Audio IN
Audio GND
4
Output 1+
Audio OUT
Audio OUT
5
Output 1-
Audio OUT
no connection
Channel 2
6
GND
Audio GND
Audio GND
7
Input 2+
Audio IN
Audio IN
8
Input 2-
Audio IN
Audio GND
9
Output 2+
Audio OUT
Audio OUT
10
Output 2-
Audio OUT
no connection
Channel 3
11
GND
Audio GND
Audio GND
12
Input 3+
Audio IN
Audio IN
13
Input 3-
Audio IN
Audio GND
14
Output 3+
Audio OUT
Audio OUT
15
Output 3-
Audio OUT
no connection
Channel 4
16
GND
Audio GND
Audio GND
17
Input 4+
Audio IN
Audio IN
18
Input 4-
Audio IN
Audio GND
19
Output 4+
Audio OUT
Audio OUT
20
Output 4-
Audio OUT
no connection
Audio Channel Gain Ratio Jumper Settings
Unity
jumper not installed
Gain
-10 dB Input level/+4 dB Output level setting on pins 1 and 2
Attenuate
+4 dB Input level/-10 dB Output level setting on pins 3 and 4
Содержание NetLinx NXC-COM2
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