instruction manual

AXB-VOL3

Three-ChannelVolume Control

AXlink Bus Controllers

AMX Limited Warranty and Disclaimer

AMX Corporation warrants its products to be free of defects in material and workmanship under normal use for three (3) years from the date of purchase from AMX Corporation, with the following exceptions:

•Electroluminescent and LCD Control Panels are warranted for three (3) years, except for the display and touch overlay components that are warranted for a period of one (1) year.

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•Unless otherwise specified, OEM and custom products are warranted for a period of one (1) year.

•Software is warranted for a period of ninety (90) days.

•Batteries and incandescent lamps are not covered under the warranty.

This warranty extends only to products purchased directly from AMX Corporation or an Authorized AMX Dealer.

AMX Corporation is not liable for any damages caused by its products or for the failure of its products to perform. This includes any lost profits, lost savings, incidental damages, or consequential damages. AMX Corporation is not liable for any claim made by a third party or by an AMX Dealer for a third party.

This limitation of liability applies whether damages are sought, or a claim is made, under this warranty or as a tort claim (including negligence and strict product liability), a contract claim, or any other claim. This limitation of liability cannot be waived or amended by any person. This limitation of liability will be effective even if AMX Corporation or an authorized representative of AMX Corporation has been advised of the possibility of any such damages. This limitation of liability, however, will not apply to claims for personal injury.

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EXCEPT AS EXPRESSLY SET FORTH IN THIS WARRANTY, AMX CORPORATION MAKES NO OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. AMX CORPORATION EXPRESSLY DISCLAIMS ALL WARRANTIES NOT STATED IN THIS LIMITED WARRANTY. ANY IMPLIED WARRANTIES THAT MAY BE IMPOSED BY LAW ARE LIMITED TO THE TERMS OF THIS LIMITED WARRANTY.

	Table of Contents
Table of Contents
Product Information .................................................................................................	1
Specifications ....................................................................................................................	1
Installation .................................................................................................................	3
DIP Switch Settings...........................................................................................................	3
Wiring ................................................................................................................................	3
Preparing and connecting captive wires ..................................................................................	3
Wiring guidelines..............................................................................................................	........ 3
AXlink connector ...............................................................................................................	....... 4
Volume channels 1 - 3 connectors...........................................................................................	4
Programming ............................................................................................................	5
Channel Settings Commands............................................................................................	5
Levels ................................................................................................................................	5
Send_Commands..............................................................................................................	6

AXB-VOL3Three-ChannelVolume Control	i

Table of Contents

	ii	AXB-VOL3Three-ChannelVolume Control

Product Information

Product Information

The AXB-VOL3Three-ChannelVolume Control provides three audio volume control channels. Eachline-levelchannel,opto-isolatedfrom system ground, can be configured for balanced or unbalanced line operation. TheAXB-VOL3is programmable for 128 steps of audio level, audio mute, variable ramp speed and level presets. TheAXB-VOL3connects to Axcess control systems using the4-wireAXlink data/power bus; it can be used for remote or rack mount applications.

DEVICE

Front

AXlink

1

2

3

ON

Device

AXlink LED

DIP switch

Channel LEDs

GND

AXM AXP

PWR

OUT

OUT

GND

IN

IN

GND

OUT OUT GND IN

IN

GND

OUT

OUT

GND IN IN

GND

Rear

AXlink

VOL CHAN 3

VOL CHAN 2

VOL CHAN 1

Volume Channel

connector

AXlink connector

FIG. 1 AXB-VOL3front and rear panel

Specifications

AXB-VOL3Specifications

Three line-levelaudio control channels:

Line operation:	Balanced or unbalanced
Audio ground:	Audio ground opto-isolatedfrom system ground.
Nominal input level:	-10to +4 dBm.
Max. input/output level:	+16 dBm.
Volume level resolution:	128 volume level steps (+ .5 dB per step).
Attenuation:	72 dB at full attenuation (mute).
Total Harmonic Distortion:	THD = <.008%
Frequency Response	20 Hz to 20 kHz +/- 1 dB

AXB-VOL3Three-ChannelVolume Control	1

Product Information

AXB-VOL3Specifications (Cont.)

Front Panel Components:

AXlink LED	AXlink LED (green and blinks to indicate AXlink communication activity and
	power:
	• Full-Offindicates no power is being received or the controller is not functioning
	properly.
	• One blink per second indicates power is active and AXlink communication is
	functioning.
	• Full-Onindicates there is no AXlink control or activity, but power is On.
Device DIP Switch	An 8-positionDIP switch used to set the AXlink device number for the
	AXB-VOL3.
Channel LEDs	Red channel LEDs 1 - 3. The LEDs individually light indicating a change in chan-
	nel levels.
Rear Panel Components:
AXlink connector	4-pin,captive wire connector, receives power and information via the AXlink and
	AXlink Central Controller.
Volume Channel	6-pin,captive wire connectors that control audio level, audio mute, variable ramp
connectors	speed and level presets of up to 3 devices.
Enclosure	Metal with black matte finish
Dimensions (HWD)	1.51" x 5.55" x 5.45" (3.84 cm x 14.10 cm x 13.84 cm)
Weight	1.1 lb (0.499 kg)
AXlink Power	12 VDC @ 230 mA

	2	AXB-VOL3Three-ChannelVolume Control