Stereo System User Manual
by 
CAT-5 Connectivity: 
Use a CAT-5 minimum to connect the AB-202 Single 
Source Distribution Module’s RJ-45 outputs to the 
RJ-45 wallplate (optional). You may also connect the 
AB-202 directly to the AB-404 Distribution Module. 
The AB-404 then snaps-in conveniently into any 
Channel Vision Central structured wiring panels of 
your choice (C-0112, C-0119, C-0138, or C-0150). 
Punch down the CAT-5 pairs into the AB-404’s 110 
connector inputs using a 110 punch down tool (e.g. 
model J-110-Tool). Using the same tool, punch down 
the four 110 connector outputs to the 110 connectors 
on the back of each AB-114 being installed. The 
connectors are color-coded for your convenience. 
(See diagram on the other side.) 
Note: The AB-404 is expandable by connecting its 
110 connector output to another AB-404 module (see 
diagram). However, each module must be powered 
individually. The AB-404 can be placed at any  
Pre-Installation: 
Before connecting the AB-114, confirm the following: 
• The power supply is not connected to the AB-114. 
• The status power supply is not connected. 
• The lengths of the CAT-5 wires connecting the AB-
114 and AB-404 modules do not exceed 1000 ft. 
(For longer runs over 1000 ft., use multiple AB-404 
modules in a cascaded system. 
Once all connections have been checked, the power 
supplies may now be connected to the modules. 
234 Fischer Ave., Costa Mesa, CA 92626 
(800) 840-0288 (714) 424-6500 (714) 424-6510 fax 
www.channelvision.com 
Remote: 
An A-BUS remote may be used to adjust volume and 
switch sources by aiming it at an AB-114 keypad. 
A-BUS by CHANNEL VISION: 
System Overview 
Featuring A-BUS technology, Channel Vision’s new-
est multi-room audio distribution system offers simple 
CAT-5 (8 conductor) wiring, IR routing, and remote 
control capability. The A-BUS system consists of four 
modular components: 
AB-114 Amplified Keypad 
- Provides audio amplification to in-room speakers 
- Features IR receiver for control of external equip-
ment, backlit keypad and visual LED indicators for 
IR, status, and volume level confirmation, volume 
potentiometers for setting maximum volume level 
and adjusting left/right balance 
- Single gang box Decora
®
 faceplate installation 
- Operable via remote control or local push button 
- Input Impedance:  28k Ohm minimum line input 
- Power Requirements: +24VDC, 750mA 
- Status Input Reqs:  +12VDC, 20mA 
- CAT-5 Connection:  110 punchdown 
- In-Wall Dimensions:  1.75”W x 2.875”H x 1.75”D 
- Weight:   6 ounces 
AB-202 Single Source Distribution Module 
- Provides single CAT-5 output audio distribution 
- Features four IR emitter outputs and routing for 
control of external equipment 
- Status Input Reqs:  +12VDC 
- Case Size:   5.2”W x 2.4”H x 1.18”D 
AB-301 Local Input Module (Optional) 
- Provides input of an audio source local to the zone 
AB-404 Panel Distribution Module 
- Distributes power, status, and IR to up to four zones 
- Features an output connector for system expansion & 
simple 110 punch down connection for easy install 
- Power Requirements: +24VDC, 2Amin – 3.2A max 
Other components: 
ABT2454 24VDC Power Supply 
- Provides power (3.2A) for the A-BUS system 
-Features mini-din plug for easy connection 
- UL, CE, and TUV approved 
Status: 
The AB-202 is factory shipped with the status port auto-
matically set to power down the AB-114 when using an 
auto sensed source. This will preserve the life of the 
AB-114 volume control as well as conserve energy. A 
12-volt power supply (e.g. model 5018) can be plugged 
into the status port of the AB-202 only if the source is 
not auto sensed. The AB-202 does not need to be  
Operation: 
The AB-114 can be powered on/off and volume can be 
controlled using the buttons on the unit. 
If IR emitters have been installed as a part of your A-BUS 
system, you may operate sources with their own remote 
control (or a universal remote) by aiming it at the IR 
window on the AB-114. 
The AB-114’s LED display will flash red to indicate it 
has received infrared signals from the remote control. 
A-BUS System Components: 
AB-114, AB-202, AB-301, AB-404 
ABT2454, and A-BUS Remote
Mounting: 
Check all wire connections and test the system perform-
ance before installing the AB-114 into a standard UL/
CSA approved electrical J-Box. 
WARNING: Before any installation, please read the instructions that accompany each component in your system.  
If you are unsure about any of the procedures, please consult a professional installer. 
Volume Trim Potentiometer: 
Two trim potentiometers (“trim pots”) are located on 
the back of the AB-114. Using a small Phillips-head 
screwdriver, these trim pots may be manipulated to set 
the maximum volume level desired and to adjust the 
left /right balance. 
Local Source: 
If you need to connect a local audio source to the A-BUS 
system, use the AB-301 to connect the source to the 
closest AB-114 installed. 
Limited Warranty 
Channel Vision Technology will repair or replace any defect in 
material or workmanship which occur during normal use of this 
product with new or rebuilt parts, free of charge in the USA, for two 
years from the date of original purchase. This is a no hassle warranty 
with no mail in warranty card needed. This warranty does not cover 
damages in shipment, failures caused by other products not supplied by 
Channel Vision Technology, or failures due to accident, misuse, abuse, 
or alteration of the equipment. This warranty is extend only to the 
original purchaser, and a purchase receipt, invoice, or other proof of 
original purchase date will be required before warranty repairs are 
provided. Mail in service can be obtained during the warranty period 
by calling (800) 840-0288 toll free. A Return Authorization number 
must be obtained in advance and be marked on the outside of the 
shipping carton. This warranty gives you specific legal rights, and you 
may have other rights (which vary from state to state). If a problem 
with this product develops during, or after, the warranty period, please 
contact Channel Vision, your dealer, or any factory-authorized service 
center. 
Speaker Connections: 
The output terminals of the AB-114 accepts both 16/2 
and 16/4 speaker wires. 
©2002 CHANNEL VISION
TM           
revised 12/02 


