Image Sensing Systems Inc. SX300AN 用户手册
Parts of the Surge Suppression Package
RTMS Sx-300 User Guide
©2014 Image Sensing Systems Inc.
B-3
IMPORTANT:
The negative terminal of the low voltage side of the power supply,
battery, or solar controller must be connected to the earth ground in
order to provide a reference point for the Autoscope RTMS Sx-300
built-in surge protection.
battery, or solar controller must be connected to the earth ground in
order to provide a reference point for the Autoscope RTMS Sx-300
built-in surge protection.
Communication Line Protection
Communication lines to the Autoscope RTMS Sx-300 sensor are sensitive lines that
must be protected from external influences to prevent damage to the communication
interface on the sensor and ensure uncorrupted data flow to and from the sensor. Each
communication line should be protected by a device that will shunt excess current on
the line to earth ground rather than sending that current through the Autoscope RTMS
Sx-300 sensor and causing damage to the device. Care must be taken when providing
protection on communication lines to ensure the device chosen will not add excess
capacitance or inductance that could cause disruptions to the integrity of the data.
must be protected from external influences to prevent damage to the communication
interface on the sensor and ensure uncorrupted data flow to and from the sensor. Each
communication line should be protected by a device that will shunt excess current on
the line to earth ground rather than sending that current through the Autoscope RTMS
Sx-300 sensor and causing damage to the device. Care must be taken when providing
protection on communication lines to ensure the device chosen will not add excess
capacitance or inductance that could cause disruptions to the integrity of the data.
show the protections provided by the manufacturers
approved surge suppression packages on the communications interfaces for the
Autoscope RTMS Sx-300 sensor.
Autoscope RTMS Sx-300 sensor.
Figure B-3: Serial Port Protection
TxD
RxD
SGND
RTS
CTS
Cable’s shield (drain wire)
Serial Transient
Suppression
Suppression