Optical Outputs; Figure 15: Open Collector Electrical Outputs; Figure 16: Connection Diagram Of The Open-Collector Electrical Outputs - GE Reason RT430 Technical Manual

Chapter 4 – Installation

Optical Outputs

RT430/434

Figure 15: Open collector electrical outputs

The open-collector outputs require the use of an external resistor properly sized to
limit current to a value below 300 mA.

Figure 16: Connection diagram of the open-collector electrical outputs

To scale the resistor use the relationship:
Where V is the external voltage to be switched by the open-collector output.
c
The resistor power should be adequate for the voltage and current values to be
switched, i.e.
Do not connect the open-collector electrical outputs without a properly sized
external resistor or another appropriate mechanism to limit current.
See the Technical Specification chapter for a description of signal levels and
maximum ratings.
RT430/434 has 2 outputs for multimode optical fiber. The length of fiber-optic cables
should not exceed 2 km.
The type of signal at each output can be configured through a Web Interface to
generate IRIG-B004, DCF77, 1PPS, 1PPM, 100PPS, or any custom-defined low
frequency, from 1 pulse-every-two-seconds to 1 pulse-per-day. In addition, it is
possible to configure the outputs to generate daily set-time pulses. The polarity of the
signal and the pulse width can also be configured.
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RT430/434
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