SubSurface Instruments AML PRO Operator's Manual page 8

8) LASER TARGET INDICATOR
A red laser indicator identifies the target position when an object
has been detected; and an audible signal is emitted.
9) ULTRA-HIGH FREQUENCY (UHF) RADIO RECEIVERS
The receivers, capture the returning UHF reflection with antennas
on both ends of the unit. Positioning the unit parallel to an object's
edge will illuminate both LED lights, the laser target indicator, the
target indicators on the LCD Digital Display and activate an audio
signal. 10
- HEAD PHONE JACK-PORT
10) NOISE ISOLATING HEADPHONES
Lightweight headphones, with noise isolating qualities; soft, closed
cushions can be used as an option when in a noisy environment.
11) HEADPHONE JACK-PORT*
Insert headphone jack into the headphone port for operation in
noisy environments if necessary.
12) USB PORT*
The USB Port has several functions such as connecting the
optional external lithium battery supply to the USB Port for
extended power, and for uploading or downloading diagnostic
information, including GPS log files.
*Important:
ALWAYS turn the AML Pro OFF before connecting to the auxiliary
battery pack or the headphone port. Failure to do so, might result in
a frozen screen and malfunction of the Unit, in such case turn the
AML Pro off wait for 10 seconds and then turn it back on. Also, turn
the AML Pro off before the auto shutoff setting for low battery turns
the Unit off. The lithium battery pack will provide a minimum of 12 hours
of continuous usage before needing to be re-charged. There are several
USB ports on the battery pack that can be used to power additional
pieces of equipment all at the same time, such as a cellphone or any
other device that requires a USB power supply. The battery pack can be
placed in any suitable holder or simply carried in the operator's pocket.
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