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DIGISONDE-4D
SYSTEM MANUAL
VERSION 1.2.11
2-18 SECTION 2 - INSTALLATION, SETTING UP AND FIELD VALIDATION
Dispatcher: filename generation
DDAV : drift velocity calculations
1
DCART.ini file need not be edited directly, but rather via the DCART Options menu selections.
FIELD VALIDATION
CAUTION
AT ANY TIME DO NOT PATCH TX1 OR TX2 DIRECTLY INTO ANY OF THE ANT
CONNECTORS ON THE REAR I/O PANEL TO SET UP A LOOPBACK. THE ANT
CONNECTORS HAVE 24 VDC ON THEM TO POWER THE RECEIVE ANTENNAS.
TO CONNECT AN EXTERNAL LOOPBACK, BLOCKING CAPACITORS MUST BE
CONNECTED IN SERIES WITH THE ANTENNA SWITCH INPUTS AT THE REAR OF
THE MAIN CHASSIS.
2:61. Although the sounder is subjected to detailed testing during manufacture and prior to shipping, final
system validation must be completed in the sounder’s ultimate operating environment to ensure that the
sounder and antenna sub-systems are correctly matched and deliver optimum performance. Field validation
process involves:
a. Matching the antenna cable lengths,
b. Adjustments to the cable lengths for varying antenna heights,
c. Detecting defective cables and Antenna Pre-amps,
d. Verifying the correct directions in both Ionogram and Drift modes of operation.
PRELIMINARY REQUIREMENTS
2:62. Field calibration shall only be performed by personal who have qualified on an authorized Digisonde
®
Sounder training course, and who have access to the relevant calibration equipment specified in this section.
Proficiency in sounder operations as described in Section 3 of this manual is mandatory.
2:63. Before any field calibration is performed the sounder and antenna sub-systems must be installed as per
the preceding instructions.
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