Access 902 User Manual - page 4
3
In addition to the 902 or 903 Control Panel, the Access
™
System can also be operated by:
• Product Select Buttons - push-button located next to each product
• Model 905 Remote Control - a small, inexpensive, full-function remote (included with the 902 and
optional for the 903)
• Compatible PC/Modem - system input/output via the control panel’s RS-232 serial port.
One unique characteristic of the Access System is that all of these different modes of product selection may be
used in the same system. This means that your system could contain a Control Panel, an IR Remote, and
Product Select Buttons, as well as an external computer or modem hooked to the Control Panel’s RS-232 port.
So, it is important for you to be familiar with your system and know the different modes of access (input) to
your system.
Product Group Expansion Port
34-Pin connector for Model 904
ProductGroup Expander
Configuration DIP Switches
to enable/disable control panel
features
3-Pin Header
connection for Model 990
Auxiliary Infrared Receiver
10-Pin Header
connection for Model
987 Audio Level Module
(902 only)
6-Pin Header
connection for Model 980
System Module
RS-232 Serial Port
Modular Jack for connecting
a PC or modem
Microphone Jack
Connect 902 microphone
extension cable here
Model 902/903 Control Panel - Rear View
(for simplicity, only larger component parts are depicted)
AUX IR
MICROPHONE
T
O
904
ON
A
B
C
D
E
F
G
H
RS-232
Configuring the Control Panel
On the back of the Control Panel is a bank of Configuration DIP Switches that enable or disable certain
functions. These switch settings should have been adjusted to match your merchandising requirements
during the installation, however, they may be changed at any time. The following chart details the function
of each switch.