20-101-0732 Rabbit Semiconductor, 20-101-0732 Datasheet - Page 84

• Manufacturer Part Number: 20-101-0732
• Description: INTERFACE SMART SCREEN OP7100
• Manufacturer: Rabbit Semiconductor

Specifications of 20-101-0732

• Module/board Type: Single Board Computer Module
• For Use With/related Products: OP7100
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 20-101-732; 20-101-732

Grounding
To meet electromagnetic compatibility requirements, and in particular to
prevent misoperation or damage from electrostatic discharges, the bezel
must be connected to a protective ground via a low-impedance path.
A protective building ground is recommended once the OP7100 is installed
at the location where it will be used. In addition to providing protection
against an unexpected electric shock, the connection to building ground
also mitigates any problems from external electrostatic discharges and
transients, and dampens any RF emissions.
The metal casing is already connected electrically to the bezel, and so does
not require a separate ground connection. The connection to the building
ground should always be made through the bezel.
The recommended way to connect an OP7100 to a building ground is to
mount the unit in a metal panel that is already grounded. Ensure that the
areas around the securing nuts are clean and free from corrosion or other
contaminants so that a good electrical connection can be realized.
Alternatively, use a wire with a size of at least 20AWG (0.5 mm
ably stranded, to establish a connection between one of the bezel mounting
studs and the protective building ground. This wire should be as short as
possible to keep its impedance low.
There is an electrical connection between the OP7100 bezel/casing and the
connection marked GND on the power supply header, J11, via a jumper on
header JP5. This connection is also the return for the DC power supply and
the I/O signals, and should not be relied on for a protective ground
connection.
Remove the jumper across JP5 if you wish to isolate the OP7100 bezel/
casing ground from the power supply ground. Any common-mode voltage
between signal ground and protective ground should be kept below 40 V DC.
84
Installation
Many of the OP7100 ICs are sensitive to static. Use extra
caution when handling units in high-static areas.
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OP7100