32
To Perform an Automatic Tune:
1
Hold the detector at waist height, with the coil vertical,
and slowly rotate through a half-circle. Make sure there are
no large targets or obvious electrical interference sources
close by.
2
Face the direction of the most interference and hold
the coil steady.
If you have difficulty holding the detector very still for 60
seconds, you can place the detector on the ground with the
coil vertical.
3
Press the Auto Tune button. Keep the detector completely
still during the automatic channel scanning process.
A single beep indicates the beginning of the Auto Tune.
The detector will begin to scan each channel for the least
interference; the scan progress is displayed on the LCD. This
will take up to 60 seconds.
The detector will select the quietest operating channel
identified. The end of the Tuning process will be indicated
by three sharp ‘beeps’.
Note:
When tuning the detector in close proximity to other
detectors, each operator needs to take turns tuning.
Do not try to tune two detectors at the same time.
Any interference is made more obvious with a faster
Motion setting (p. 62)
. Therefore, you can assist the Auto
Tune function in selecting the quietest frequency band by
selecting Fast (GPX 5000), or Medium (GPX 4800), Motion
before performing the Auto Tune process. When the process
is complete simply return the Motion speed to your
preferred setting.
500mm (20")
Note:
Tuning should be done
initially with the Coil switch
in Double D or in Mono. If
the interference is still severe
after completing the tuning
operation, change the Coil
switch to Cancel and then re-
tune the detector if necessary.
Auto Tune
Summary of Contents for GPX 4800
Page 1: ...Instruction Manual...
