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The OP8320-4 was specifically designed to terminate OPAL-RT TTL digital I/O boards when connections between simulator and units under test are longer than 1.5 m (5 feet).
The board provides open sockets on channel 0, on which you can test various terminations.
Once those terminations are confirmed, you can apply the desired termination by soldering components to the appropriate channel.
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Current Regulating Diode Specifications: Use through hole 0.3 mm axial diodes and solder using SMT 1206 |
Typical Installation
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Termination Outputs
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This consumes the most power as the frequency increases, but no additional delay is experienced.
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This termination technique can be optimized for only one signal frequency. |
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Diode Termination
It consists of a diode to GND that should be located as close to the receiver as possible.
There is no increase in power, no delay, and this configuration is useful for standard backplane terminations.
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This is the most attractive of all techniques since there is no power increase and no delay. |
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30 V diodes are always installed on all versions of the OP8320 board. |