Minelab EQUINOX 900 Instruction Manual page 25

Noise Cancel
Detectors can become noisy due to electrical
interference from power lines, electrical
equipment or other detectors operating
nearby� The detector interprets this
interference as inconsistent, erratic detections�
The Noise Cancel setting allows you to change the noise
cancel channel� This slightly shifts the detector transmit
frequency to be less responsive to the source of the noise�
Noise Cancel affects both the audible detection noise level
and pinpointing performance�
Noise Cancel adjustment is local; only the current Search
Mode Search Profile is affected by changes to this setting�
The Noise Cancel setting has 19 channels with a range
from −9 to 9� It has a default setting of 0 [zero] for all
Search Modes�
Perform a Noise Cancel
Frequency is changed�
Auto is the recommended Noise Cancel method�
AUTO NOISE CANCEL
Auto Noise Cancel automatically scans and listens to every
frequency channel and then selects the one with the least
interference�
1. Hold the coil stationary and away from the ground�
2. Press the Settings button to navigate to the
Noise Cancel setting�
3. Press the Accept/Reject button to initiate the Auto
Noise Cancel process� Auto Noise Cancel can also be
initiated on the EQUINOX 700 by pressing the Minus (–)
or Plus (+) buttons�
* EQUINOX 900 only
CONTENTS
(page 25) each time the
4. The Auto Noise Cancel progress is indicated on the
Discrimination Scale, and by a series of ascending
tones�
When this process is complete (after approximately
5 seconds), the automatically selected channel
appears on the Target ID Display, and there are three
confirmation tones�
Note: While Auto Noise Cancel selects the
'quietest' channel based on several criteria, the
selected channel may still have some audible noise�
To try and reduce noise further, consider adjusting
Sensitivity�
MANUAL NOISE CANCEL*
Setting the Noise Cancel manually allows you to listen to
each channel to select the one with the least interference�
This can be useful when detecting in close proximity
to other detectors or in locations with lots of electrical
interference�
1. Hold the coil stationary and away from the ground�
2. Press the Settings button to navigate to the
Noise Cancel setting�
3. Press the Minus (–) or Plus (+) buttons to adjust the
channel�
The channel is shown on the Target ID Display� Pause
and listen to the interference levels — keep the detector
still during this process�
4. Continue until you have chosen the channel with the
least interference�
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