RabbitCore eDisplay OP7200, User Manual

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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.