Specifications

BATS AND PORTABLE BATS MAINTENANCE
5-1
5. SYSTEM MAINTENANCE
5.1 CALIBRATION FILES
The hydrophone assembly is calibrated at the factory. The Trackman Software uses the Hydro-
phone calibration files to correct for the offsets within the Hydrophone. The calibration files consist
of two binary files; XXXXYYYY.bhi & XXXXYYYY.blo. These files contain offsets which compensate
for the variances from hydrophone to hydrophone. When ordered as a system, these files are in-
stalled in the PC at the factory. If a hydrophone assembly is ordered separately, it comes with a
floppy or CD with a set of files on it, and must be installed into the PC to which Trackman Software
is installed.
The CAL file’s first 4 characters are the Transceivers “Input & A/D” PCB S/N’s (if applicable) and
the last 4 are the Hydrophone S/N’s. The extensions of the two files are .blo and .bhi. (Binary Low
byte 1-8 and Binary Hi byte 9-16.) For example…
00001038.bhi
00001038.blo
If the Transceiver S/N’s are 0000 then the Hydrophone can be used with any BATS Transceiver.
(There are no phase errors within the A/D Card.)
The CAL Files reside on the Trackman PC (Laptop) or Model 4451A under;
c:\Program Files\ORE Offshore\Trackpoint MMI\CalFiles\InUseCAL\*.bhi
c:\Program Files\ORE Offshore\Trackpoint MMI\CalFiles\InUseCAL\*.blo
If a new Hydrophone is used with the system, the set of Calibration files from the new Hydrophone
must be copied into this directory. Only one set of *.bhi & *.blo files can reside under this directo-
ry. Move the older CAL files under a new directory called…
c:\Program Files\ORE Offshore\Trackpoint MMI\CalFiles\OldCALFiles\
The original CAL files are also located on the CD that came with the system in case the Trackman
Software is installed on a new PC.