Studio Technologies 5132 2012 - Manual (Page 10)

Issue 4, September 2012 Model 5132 User Guide
Page 10 Studio Technologies, Inc.
Model 5132
Party-Line Interface Module
Configuration
RS-485 Address ID
One configuration setting must be per-
formed for applications that implement
remote control of Model 5132 functions. Up
to sixteen Model 5100-Series modules can
“share” an RS-485 data bus but each must
have a unique address ID. Selecting the
device’s address ID involves setting four
DIP switches. Refer to Figure 5 for details.
how the Model 5132 is going to be used
the internal party-line power source can be
enabled or disabled. It would be enabled
whenever user beltpacks are going to be
the only devices connected directly to the
Model 5132. The internal power source
should be turned off whenever the Model
5132 is going to be connected to an exist-
ing party-line intercom system that in-
cludes power and audio terminations.
The auto null function is used whenever
significant changes are made to the num-
ber of user devices or the interface cabling
connected to the party-line interface. It
also should be used if the characteristics
of a connected party-line intercom system
change. Activating the auto null function is
simple, only requiring the pressing of the
auto null pushbutton switch.
Maintaining the correct levels coming from
the 4-wire audio sources is very important.
This will ensure proper signal levels are
presented to party-line users and maintain
optimal audio fidelity. The audio level me-
ters, party-line power status LED, and pin
2 status LED will assist users in confirm-
ing that correct operation is taking place.
In addition, the under-voltage shut-down
function will help to protect the internal
party-line power supply should a fault
condition be detected.
Party-Line Power
A pushbutton switch and status LED is
associated with the Model 5132’s internal
party-line power source. A momentarily
press of the button will “toggle” (alternate)
between the power on and power off
modes. When the LED is lit 28 volts DC
will be applied to pin 2 of the XLR connec-
tor. In addition, audio terminations (200
ohm AC loads) will be connected to the
Figure 5. RS-485 Address ID Settings
Operation
The Model 5132 is designed for continu-
ous operation with no internal adjustment,
calibration, or maintenance required.
Two pushbutton switches allow the user
to select the on/off status of the internal
party-line power source as well as activat-
ing the auto null function. Depending on