AMX NetLinx NXM Series - Manual (Page 47)

NXC-VOL4 Volume Control Card
41 NetLinx Cardframe, Control Cards, and NetModules
NXC-VOL4 Volume Control Card
The NXC-VOL4 Volume Control Card (FG2024) provides four discrete volume control channels with LED
feedback. The volume control channels can be programmed for mono or stereo operation, and balanced or
unbalanced audio connections. It supports programmable audio levels, audio mute, variable ramp speeds and
preset levels. Use the on-board jumpers to set the gain/attenuation (Unity, Pro level (+4dBu) to Consumer level
(-10dBu) conversion, or Consumer level to Pro level on each channel). FIG. 8 shows the VOL4 card.
Specifications
FIG. 8 NXC-VOL4 Volume Control card
NXC-VOL4 Specifications
Power Requirements 197 mA @ 12 VDC
Volume 1-4 Four volume channels
Status 1-4
(3 LEDs per channel) • Yellow LED shows level-up/down activity
• Red LED shows mute mode
LED 1: Channel 1 RAISE (yellow)
LED 2: Channel 1 LOWER (yellow)
LED 3: Channel 1 MUTE (red)
LED 4: Channel 2 RAISE (yellow)
LED 5: Channel 2 LOWER (yellow)
LED 6: Channel 2 MUTE (red)
LED 7: Channel 3 RAISE (yellow)
LED 8: Channel 3 LOWER (yellow)
LED 9: Channel 3 MUTE (red)
LED 10: Channel 4 RAISE (yellow)
LED 11: Channel 4 LOWER (yellow)
LED 12: Channel 4 MUTE (red)
I/O Jumpers (CH1-CH4)