WinFrog User’s Guide - Appendix C – Magnetometer / GSM-19 Page 2 of 5
single coax cable that can be up to 1000m long (for the standard version), and up to 10
Km long for the extended range version. The transceiver unit connects to a power
supply outputting between 15VDc and 35VDc. The unit also connects to standard RS-
232C port. It is recommended to operate the unit at as high a Voltage as possible to
avoid excessive Voltage drop across the coax cable.
Any standard GSM-19 ground console can be fitted with a special pressurized sensor
(fish) for marine operation. The fish can be towed up to 100m behind a vessel. This
configuration is the GSM-19 Shallow Marine Magnetometer.
The GSM-19MD (Marine Deep) Magnetometer is a complete magnetometer integrated
into a towed housing. The GSM-19MD Fish can operate at depths up to 300m, with
1000m of kevlar tow cable. Sixteen fish can be networked on the tow cable – which has
a breaking point of 2000Kg - creating gradiometer configurations.
DEVICE CONFIGURATION INSTRUCTIONS
WINFROG I/O DEVICES > EDIT I/O:
Baud Rate: 9600
Data Bits: 8
Stop Bits: 1
Parity: None
RS-232C bi-directional communication.
WINFROG I/O DEVICES > CONFIGURE DEVICE:
The GSM-19 is added to WinFrog from the Magnetometer device group. The
MAGNETOMETER data item is added along with the GSM-19 device.
You must select the GSM model type (GSM-19 or GSM-19MD) at the device level.
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