Specifications

BATS AND PORTABLE BATS OPERATION
3-72
EXPLANATION OF ERROR CODES
CODE
DESCRIPTION
When an Error Code 6 occurs, -.- lines are sent out the RS-232 as shown above to indicate
invalid data within those data fields.
7
Minimum range error. This occurs when in transponder or responder modes. If the measured
slant range is less than the entered MIN XPONDER RANGE, the message "SLANT RANGE <
ENTERED MIN" is displayed in the status area. No position is plotted.
SUGGESTION: Check the “Limits” parameters under the Beacon Setup dialog/ Filtering Tab.
Make sure slant range to beacon is greater than the minimum range setting.
8
Simultaneous reply interference error. Two replies arrived at same time and cannot be pro-
cessed. No position is plotted.
10
Travel time less than turn around time (TAT). Either the reply was detected within a time pe-
riod less than the entered turnaround time or no valid reply was detected and system trig-
gered on noise within the TAT.
SUGGESTION: Check the “Reply Parameters” under the Beacon Setup dialog/ Acoustic Pa-
rameters Tab. Make sure the beacon’s Turn Around Time is entered correctly for the beacon
Type in use (Transponder VS Responder). Check Beacon’s TAT. Check Beacon setup parame-
ters.
14
Maximum Slant Range Exceeded: The MAX SLANT RNG filtering function compares the reply’s
slant range against this value. If the slant range is greater than the entered value the status
block shows an error code #14. If the RS232 Format is set to an “EC” format it also outputs
the last good position and tags it with an error code #14. See section 3.7
15
Bearing Limit Exceeded: The BEARING LIMIT function is enabled only in Fish Track mode,
when the angle to the target is fairly well known. The system checks to see whether the tar-
get is within the parameters as set by the BEARING LIMITS. This function is only applicable to
targets with a depression angle of less than 45. If a target is outside the set limits then the
system displays an error code #15, "BEARING LIMIT EXCEEDED". These limits are always ref-
erenced to the vessel, whether compass mode is ON or OFF.
16
MODEL 4460B: Processing was interrupted by sending parameter changes to BATS, System or
Target parameters. Next interrogation cycle should clear error.
17
MODEL 4460B: BATS Low Quality Factor on the Navigation Reply (So as not to be confused with 04,
as determined by Trackman.) QF was less than the QF Threshold
SUGGESTION: Usually means a high multipath environment. Check the Min Quality Factor
setting in the Expert menu to see if it is up too high (2 = default). Check that the Hydrophone
is installed correctly and that there is enough clearance between Hydrophone tip and water
surface and the sea floor. Check that the receive code is correct for the beacon. It is possible
that the signal has two correlation peaks and the wrong peak is being selected. Open up the
reverse time direct path search parameter to 5ms in the expert menu (2.5ms = default).
Raise or lower the Direct path Min Amplitude Fraction in the expert menu (0.4 = default).