7
Connecting Headphones
The detector may be used with the built-in 
speaker or the headphones supplied. 
To attach the headphones, remove the dust 
caps from the headphone plug and headphone 
socket. Hold the headphone by the rubber collar 
using thumb and index finger; the raised double 
arrow should be uppermost. Align the plug with 
the headphone socket and squeezing firmly, 
slide the collar onto the socket. 
The detector’s built-in speaker will be 
automatically muted when headphones are 
connected.
 WARNING:
DO NOT submerge the headphones.
The headphone earpieces are NOT 
waterproof. Only the headphone cable and 
connector is waterproof. If submerging the 
unit beyond wading depth, the headphones 
must be removed and the LED indicators 
used to indicate a detection.
Quick Start
The following steps are a good general 
procedure to get you detecting quickly. 
1.  Ensure detector is set to Normal  
mode 2 (green)
2.  Turn on (see ‘Turning the Detector On’)
3.  Perform Noise Cancel (if required) (page 9)
4.  Set Threshold (if required) (page 9)
5.  Perform Fast Ground Balance (page 10)
6.  Start detecting
NOTE: Settings may need to be further adjusted 
depending on individual ground conditions.
Turning the Detector On
Before you turn the detector on, hold the coil 
away from any metallic objects.
To turn on the detector, lift and rotate the 
power switch clockwise, then release.
 
The SDC 2300 will emit a series of four or five 
rising tones and then the LEDs will illuminate.
The detector is ready to use. 
 
Getting Started