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RT430/434
TTL Electrical Outputs
Open-Collector Electrical Outputs
30
Cables with lengths ranging from 15 m (50 ft) to 100 m (328 ft) can be ordered from
GE Grid Solutions. For use of antennas and cables from other manufacturers, contact
GE Grid Solutions for evaluation.
The antenna cable affects the unit's performance in two distinct ways: satellite signal
attenuation and propagation delay.
The RT430/434 has 4 electrical outputs, 2 screw connectors, and 2 BNC connectors.
One output of each connector type is insulated.
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.
More than one device can be connected in parallel from one TTL output. The
maximum number of devices that can be connected to the TTL output depends on
the current that each device's input uses. As the maximum current supplied from
each TTL output is 150mA, the sum of the currents from all devices connected cannot
exceed this value (cable resistance should be considered). The TTL voltage level is 5V.
Electrical cable length should not exceed 100m. To minimize EMC effects in IRIG-B
signals, the use of fiber-optic cable is recommended for distances greater than 3 m.
For details on the configuration of TTL-Level electrical outputs, refer to the
Configuration chapter.
See the Technical Specification chapter for more description of signal levels and
maximum ratings.
The unit has 2 open-collector electrical outputs, and the electrical cable length
should not exceed 100m.
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.
Figure 14: TTL electrical outputs
Chapter 4 – Installation
RT430/434
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