2205 System Technical and User’s Guide
Document : 0022175 Rev A Page 10
'0' for trigger A, '2' for trigger B, '4' for trigger C. The 1pps Timing Trigger is itself a separate trigger
input keyword, "OnePPSInputLine", where the variable is defined as: '-1' for disabled, '0' for trigger A
input, '1' for trigger B input or '2' for trigger C input. Do not identify the 1pps trigger as an input trigger
using the TriggerInputLine command. Only one Input and one Output trigger can be defined. Table 5-2
identifies the recommended trigger setting found in the SONAR.INI for this system. The software
programmable input triggers are not optically isolated. The triggers can sink or source a TTL/CMOS
compatible signal. It is recommended that the user consult EdgeTech Customer Service if a different
configuration is required so that this value may be updated and compared against the hardware
configuration to insure there are no incompatibilities.
Table 5-2. Trigger Configuration
5.8 Solid State Drive
This system has no onboard data storage. All data is streamed on the 10/100 interface to the Topside
computer or other network device.
5.9 Pressure Sensor
Included in the end cap is a 3000psi (2100m) pressure sensor. The sensor output is connected directly to
the SONAR processor for inclusion in the JSF datafile and is real time displayed in Discover and J-Star
software.
6. System Software
6.1 Timing Configuration
The SONAR.INI file is preconfigured to accept a NMEA timing string (ZDA, RMC, GGA, GLL, GGK)
via the network (TimeSyncSource=ZDA). As these messages appear asynchronously on the network, the
addition of a 1pps trigger is needed to ensure that SONAR is synchronized to the external timing
components. Network Based Time may be set without the use of a 1pps, but it will not have the same
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