4-20
8011M ACOUSTIC DECK UNIT
0004811_REV_F
Some examples of Host Mode Operations are:
MODE
DESCRIPTION
in10.5 #
Attempt to change the interrogate frequency to 10.5 kHz rejected due
to lower case characters
IN10.5 *
Interrogate frequency changed to 10.5 kHz
RX14.00 *
Receive frequency changed to 14.00 kHz
LG00000 *
Lower range gate set to 0 milliseconds
UG02000 *
Upper range gate set to 2 seconds
IN 00026 mS
Interrogate initiated. The response received in 26 milliseconds
IN 00000 mS
Interrogate initiated. Response received with range gates
CM341256 * $..$...$...$...$...$...$...... #
Command 341256 sent, status returned, 7 pings @ 1 second
CM341256
BACS command 341256 was terminated during transmission (no
asterisk sent)
Table 4-4: Host Mode Examples
Ranges displayed while in host mode are reported as the total time of flight. It includes the underwater
unit’s turnaround time. To determine the range, subtract the TAT turnaround time for the particular
underwater unit, then divide by 2 and multiply the result by the speed of sound. If no response is received
before the upper range gate expires, the range is reported as 00000 milliseconds.
4.3.4.2
8011M Host Mode Serial Commands
COMMAND DESCRIPTION
RXxx.xx
Set receive freq. (reply), xx.xx in kHz (07.50 – 15.25, in 250 Hz steps)
INxx.x
Set transmit freq. (interrogate), xx.x in kHz (07.5 – 15.0, in 250 Hz steps)
IN
Interrogate initiation
RR
Sets the 8011M to return ranges automatically after receipt of “IN” (default)
NR
Do not report ranges automatically
GR
Report last range acquired
SOx
Set output power 0 – 9 (0 is not zero power, it’s the lowest power setting)
SIx
Set receive sensitivity 0 – 9 (9 is most sensitive) (0 is the least sensitive)
UGxxxxx
Set upper range gate 00050 – 21844 milliseconds.
LGxxxxx
Set lower range gate 00000 – 21844 milliseconds. (Default 50). When used in air, set to “0”.
CMxxxxxx
Send BACS command xxxxxx, then listens for a status report.
Table 4-5: Host Mode Serial Commands
