3-1
3.0 SETUP
The EdgeTech Side Scan Telemetry is used to transfer the magnetometer data to the Topside. The
Magnetometers have a bidirectional RS-232 interface at 9600 bps. The magnetometer data is read by the
Towfish electronics, encoded onto the side scan telemetry, and then decoded on the EdgeTech Portable
Topside Laptop or Rack Mount with Topside and is made available on a PC standard Com port. Control
messages from the PC hosting the magnetometer user interface software, are likewise transferred to the
magnetometer Towfish. A null modem serial cable is required to connect the EdgeTech topside to a laptop
or PC running the magnetometer acquisition software (Sealink, Maglog, etc.).
The EdgeTech telemetry allow for a full bi-directional communication link between the topside and the
magnetometer, where data flow upstream and commands flow downstream.
To properly relay the ‘Mag’ data from the Towfish onto the PC/laptop running the magnetometer
acquisition software, the SONAR program running in the Towfish and the DISCOVER Software on the
Topside need to be properly configured. The following shows the required fields in the initiation files. This
feature must be added to Towfish and is password protected. If the password was previously installed
follow the procedure below. If the password has not been installed contact EdgeTech for support. The
Towfish needs to be properly connected to the topside and powered up to perform this procedure.
1. Connect Towfish Cable Extension to the Y-Splice Towfish Extension Cable Connector
2. Connect Female Tow Cable Connector into the Male Y-Splice Tow Cable Connector
3. Connect Y-Splice Magnetometer Female Connector into the Male connector on the Mini-Explorer
or SeaSpy 2 Magnetometer Tow Cable:
Figure 3-1: Installation
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