74
451253/A
Clock synchronization (1PPS)
The SBP 29 has a 1PPS (one pulse per second) input for clock synchronization.
The 1PPS signal is connected to the coax connector on the CPU RIO. This connection is
marked
1PPS
.
The 1PPS signal must be minimum 1 microsecond long.
The CPU RIO board is equipped with an optocoupler at this input. The input series
resistor is tuned for a TTL signal (Low level<0.6 V, High level>3.2 V).
Optically isolated input signals
Note
The input signals must not be negative, that is no RS-232 signals can be used for these
inputs.
A
Input from external system
B
CPU RIO input circuitry
The input current must be approximately 10 mA. Depending on your input signal
additional resistance must be applied to achieve the required input current.
SBP 29 Installation Manual
Summary of Contents for SBP 29
Page 1: ...451253 A November 2019 Kongsberg Maritime AS SBP 29 Sub bottom profiler Installation Manual ...
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