Studio Technologies 5150 V.2 - Manual (Page 11)

Model 5150 User Guide Issue 3, September 2013
Studio Technologies, Inc. Page 11
Model 5150
Video Generator Module
will be a graphic arrow icon pointing “in” on
the top of the module. Refer to Figure 2 for
details on the location of the SFP module.
Ensure that the LC plug fully “mates” with
the receive port and its tab is locked into
the slot of the SFP module.
A configuration setting must be appropri-
ately made to enable the optical SDI input.
There is no automatic switching between
the optical and coaxial (BNC) SDI inputs.
Only one of the two SDI inputs can be
selected and active at a time. Refer to
the Configuration section of this guide
for details.
DC Input and Data Bus
A 4-position header is used to connect DC
power and a local RS-485 serial data bus
to the Model 5150. Two pins on the mating
connector are used to connect a source
of nominal 12 volts DC. The acceptable
range is 10 to 18 volts DC with a maximum
current of 400 milliamperes at 12 volts DC.
For remote control operation two pins on
the mating connector will implement the
data bus connection from a Studio Tech-
nologies’ Model 5190 Remote Access
Module.
The mating connector is compatible with
the AMP MTA-100 series of IDC recepta-
cles. For 22 AWG wire the closed-end-style
receptacle is AMP 3-643813-4; the feed-
through-style receptacle, used for busing
1. – DC (Common)
2. + DC (10-18 volts)
3. + Data (RS-485)
4. – Data (RS-485)
Figure 3. DC Input and Data Bus Connections
connections, is AMP 3-644540-4. The body
color for both receptacles is red, following
the convention of the MTA-100 series for
compatibility with 22 AWG wire. Refer to
Appendix B of this guide for additional
connector details.
GPI and GPO
This section applies only to Model 5150
modules with serial numbers 00251 and
later.
A 3-position header is used to connect with
the Model 5150’s GPI (general-purpose
input) and GPO (general-purpose output)
functions. Pin 1 is used by both the GPI and
GPO, pin 2 is used by the GPI, and pin 3 by
the GPO. The mating connector is compat-
ible with the AMP MTA-100 series of IDC
receptacles. For 22 AWG wire the closed-
end-style receptacle is AMP 3-643813-3;
the feed-through-style receptacle, used for
busing connections, is AMP 3-644540-3.
The body color for both receptacles is red,
following the convention of the MTA-100
series for compatibility with 22 AWG wire.
Refer to Appendix B of this guide for addi-
tional connector details.
Pins 1 and 2 should be connected to the
switch or relay contact designated to con-
trol the GPI. Electrically the GPI (pin 2) is
a logic input that is “pulled up” to 3.3 volts
DC by way of a 5 k (5000) ohm resistor. It
operates in a “logic low” manner requiring
that the switch or contact closure carry a
little less than 1 milliamperes (0.66 mA) to
activate it. While the GPI circuitry is pro-
tected from over-current and static (ESD)
discharge, care should be taken to prevent
nasty signals from reaching it. The input
is active only when held in the low state; it
can’t be configured to change state (“latch”)
in response to a momentary closure.