4
SRC-4 Installation and Operation Manual
OVERVIEW
Product Overview
The SRC-4, serial remote control interfaces four optically isolated inputs and four
SPDT relays to a RS-232 port. Communication with the SRC-4 is accomplished via
short "burst" type ASCII commands from the user’s PC. Alternatively, the SRC-4
may be used in Data mode which allows the user to define custom ACSII to control
the relays as well as custom ASCII strings when an input is on or off. Two units may
be operated in a standalone pair mode to form a "Relay extension cord," with four
channels of control in each direction. The unit communicates using RS-232 at 9600
baud by default but can operate at other baud rates using the Auto-Detect mode. The
SRC-4 is powered by a surge protected internal power supply. An optional USB-RS-
232 smart cable adapter is available.
Features/Benefits
• RS-232 serial interface for connection to PC.
• LED indicators for all inputs and relays.
• Status and relay connections are on removable euro-block screw terminal con-
nectors to simplify wiring and service, mating plugs are supplied.
• Fully RFI proofed.
• Surge protected internal power supply, universal switching power adapter with
domestic connectors supplied.
• Up to four SRC-4’s may be rack mounted on one RA-1, 1-RU rack shelf.
Applications
• One end of a full-duplex four channel serial-enabled I/O extension cord.
• Relay control and status monitoring via user defined PC application.
Inspection
Please examine your SRC-4 carefully for any damage that may have been sustained
during shipping. If any damage is present, please notify the shipper immediately and
retain the packaging for inspection by the shipper. The package should contain the
SRC-4, a modular cable with 9-pin “S9” female D-sub adapter, and 9 VDC wall power
supply with domestic connector. Manuals may be downloaded from our web site.
Installation of the SRC-4 in high RF environments should be performed with care.
Shielded cable is suggested for all I/O connections. All shields and the station
ground should be connected to the “CG” terminal. It is recommended that all cables
connected to the SRC-4 be looped through ferrite cores to suppress RF.
WEBSITE:
Visit our web site for
product updates and
additional information.
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