Rabbit OP7100 User Manual download pdf (Page 51)

User’s Manual 45

3.11 Other Hardware

3.11.1 Spectrum Spreader

OP7200 operator control panels that carry the CE mark on their RabbitCore module have

a Rabbit 2000 microprocessor that features a spectrum spreader, which helps to mitigate

EMI problems. By default, the spectrum spreader is on automatically for OP7200 operator

control panels that carry the CE mark when used with Dynamic C 7.30 or later versions,

but the spectrum spreader may also be turned off or set to a stronger setting. The means for

doing so is through a simple global macro as shown below.

There is no spectrum spreader functionality for OP7200 operator control panels that do

not carry the CE mark on their RabbitCore module or when using any OP7200 with a ver-

sion of Dynamic C prior to 7.30.

1. Select the “Defines” tab from the Dynamic C Options > Project Options menu.

2. Normal spreading is the default, and usually no entry is needed. If you need to specify

normal spreading, add the line

ENABLE_SPREADER=1

For strong spreading, add the line

ENABLE_SPREADER=2

To disable the spectrum spreader, add the line

ENABLE_SPREADER=0

NOTE: The strong spectrum-spreading setting is not needed for the OP7200.

3. Click OK to save the macro. The spectrum spreader will now remain off whenever you

are in the project file where you defined the macro.

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Rabbit OP7100 User Manual Page 51