Studio Technologies 5132 2014 - Manual (Page 8)

Issue 5, October 2014 Model 5132 User Guide
Page 8 Studio Technologies, Inc.
Model 5132
Party-Line Interface Module
also provided offering status indications of
the internal party-line power supply, pin 2
status, auto null, and remote control data
functions.
Pro Audio Quality
The Model 5132’s audio circuitry was
designed in the spirit of professional audio
equipment rather than that found in typical
party-line intercom devices. High-perfor-
mance components are used throughout,
providing low-distortion, low-noise, and
high headroom. The internal party-line
power source offers a unique level of
performance—its ability to deliver power
while maintaining audio quality is simply
unmatched.
Installation
Integration of the Model 5132 into the
selected application is quite simple, only
requiring connection to the analog audio
inputs, analog audio outputs, and DC
power input. Some applications will also
require connection to the RS-485 inter-
face. The audio signals will have a nominal
level of either +4 or 0 dBu, depending on
the Model 5132 version being installed.
The DC power source should be nominal
12 volts with an acceptable range of 10 to
18 volts. The RS-485 data bus is a single
pair of wires that interconnect the Model
5132, along with other Model 5100-Series
modules, to a Model 5190 Remote Access
Module. After the connections have been
completed, the module can then be
secured into the designated mounting
location.
Audio Inputs
The Model 5132 allows two channels of
analog line-level audio to be connected.
Each signal is associated with one of the
two party-line interface channels. The input
circuitry is electronically balanced and
capacitor coupled. The nominal input level
of Model 5132S (SMPTE) version modules
is +4 dBu with a maximum allowable input
level of +24 dBu. The nominal input level
of Model 5132E (EBU) version modules is
0 dBu with a maximum allowable level of
+18 dBu.
Connections to the audio inputs are made
using a 5-position header connector locat-
ed on the Model 5132’s rear-most circuit
board. For details on appropriate mating
connectors refer to Appendix A located at
the end of this document.
For connecting to balanced sources the
signal + (high), signal – (low), and com-
mon/shield connections should be used.
With unbalanced sources connect source
signal high to the Model 5132’s signal +
(high) and source signal low to both the
signal – (low) and common/shield connec-
tions. Refer to Figure 2 for details.
Pin Number Function
1 Common/Shield
2 +
3 –
4 +
5 –
Figure 2. Audio Inputs
Channel 1
Channel 2