4-17
4.
The upper range gate is used to set the maximum allowable range during ranging operations. Any
replies received after the upper range limit is reached will be ignored.
5.
A lower range gate is used to set the shortest allowable range. Any reply received before the lower
range gate is ignored. The range gates allow the user to lockout random noise and or other
transponders in the area by only allowing replies from within a selected area
6.
More options are selected to enter a sub-menu containing more settings. There are three options:
1.
Repetitive rate
– Sets the rate at which the system starts each ranging operation in Repeat
Mode only. Each increment of this value is one second.
2.
Sound speed
– Changes value used for “Speed of Sound” in the range calculation. The
Default Speed of Sound used is 1500 meters per second(m/s).
Allowable Range:
100 to
2000(m/s).
3.
Slant / Horizontal range mode
– Switches between slant and horizontal ranging mode
4.3.2
Commands <CMD>
The command mode is used to transmit commands to underwater equipment. EdgeTech, ORE Offshore,
and other manufacturer’s commands are supported. Generally, commands are sent as follows:
<
CMD
> Command. Press
<CMD>
and then enter the command(s).
<
ENT
> Enter. Press
<ENT>
after entering a Command to initiate Command.
<
GRD
> Guarded command. Requires the
<GRD>
and
<ENT>
keys to be pressed at the same time.
NOTE:
To send another manufacturer's command, it must be selected in
the menus before entering commands. Contact
for communicating with another manufacturer’s equipment.
After the command is transmitted, and the receive lockout time has passed, the model 8011M goes into
“listen” mode, where it waits for replies from the underwater equipment. Upon receipt of the first
detection, the display becomes a timeline indicating the detector activity. The number of dots per time
interval is (0.5 seconds). The detections of the reply pulses are counted and displayed at the current
character position.
A dot indicates no replies at the particular character position. Depending on the arrival time of a reply,
there may be 2 blocks displayed for 1 reply. This should not impair deciphering the status since the pulses
are separated by at least 1 second. This display aids in deciphering the reply message from the underwater
unit. To determine the status of the underwater unit, refer to the manual for that particular system.
