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Detect
Noise Cancel
The Noise Cancel function allows you to eliminate
electromagnetic interference (EMI) or 'noise' from the
detector.
The GPZ 7000 may become noisy due to electrical
interference from power lines, electrical equipment or
other detectors operating close by. The detector interprets
this interference as inconsistent, erratic detections.
The available options are:
• Auto (Default)
• Manual
Auto Noise Cancel
Auto Noise Cancel automatically scans and listens to every
channel, and selects the one with least interference. Auto
is the recommended setting.
1.
Make sure there are no large targets or obvious
sources of EMI close by, then raise the detector coil
until the detector shafts are horizontal to the ground.
2.
Select the Noise Cancel icon then Auto to initiate
Auto Noise Cancel.
3.
Automatic channel selection will commence. Keep
the detector still during the selection process, which
may take up to 55 seconds. Press the back button to
terminate Noise Cancel at any time.
The screen will indicate when the Noise Cancel is
complete.
Manual Noise Cancel
The Manual setting allows you to manually select and
listen to each channel for the least interference.
To manually adjust Noise Cancel:
1.
Make sure there are no large targets or obvious
sources of EMI close by, then raise the detector coil
until the detector shafts are horizontal to the ground.
2.
Select the Noise Cancel icon, then select Manual.
3.
Press the left or right arrow buttons to select a
channel. Pause and listen to the interference coming
from the detector. Keep the detector still during this
process.
Once the channel with the least interference has
been found, press the Select button exit the menu.
Sensitivity
Sensitivity controls the detector's response to received
signals. These signals can include desirable signals
from nearby metal, as well as undesirable signals from
electronic noise, and noise due to ground response.
Increasing the sensitivity level may make targets more
detectable but may also increase detector noise due to
these noise influences.
You can adjust the sensitivity setting to your desired level.
Adjust Sensitivity Settings
Select Sensitivity on the Detect page. An adjustment
range from 1 to 20 will appear. Use the left and right
arrow buttons to increase or decrease the Sensitivity; the
threshold tone will become silent for approximately one
second with each press. Press Select when done.
Volume
Range: 1–20
Factory Preset: 8
Volume controls the amplification of a target's audio
response, relative to the target signal strength. This audio
setting is most similar to volume adjustments in other
devices (e.g. radio or television volume controls).
With a setting of 1 the target signal will not be amplified.
Weak target signals will sound quiet, medium target
signals will sound mid-range and strong target signals will
sound loud. There will be greater differentiation between
target signal strengths; however, weak signals will be
harder to hear.
With a setting of 20, all target signals will be amplified to
a loud audio response. At this setting there will be less
differentiation between medium and strong signals, but
weak target signals will be easier to hear.
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