C-SCOPE CS1220XD Instructions Manual page 8

manufacture at the optimum level. The level is the same in switch positions GD1 and
GD2.
Discriminate D1 & D2
The Discriminate circuit can be set to the range GD1 or range GD2 using the FUNCTION
switch. Range GD1 allows the user to select the level of Discrimination from iron to small
silver foil. Range GD2 allows variation from silver foil, through pull tabs to screw caps.
Discriminate push button (4) / Discriminate rotary control (7)
These two controls are enabled in Manual Control Modes GD1 and GD2 only. The
variable Discriminate level is adjusted by first selecting the DISCRIMINATE mode by
push button (4) then rotating the level control (7).
The level of Discriminate can be adjusted for each Discriminate mode by operating the
DISCRIMINATE LEVEL control on the Main Control Box.
i.e. GD1 - Discriminate level 0
GD1 - Discriminate level 10 - Iron and silver foil discriminate
GD2 - Discriminate level 0
GD2 - Discriminate level 10 - Iron, silver foil and pull tab discriminate
Warning! If the detector is set to GD2 and discriminate level 10 then as well as rejecting
pull tabs, some copper nickel coins and gold rings etc. will be rejected at these severe
settings. Copper and solid silver or gold will be detected though. Generally, only set the
detector to D2 - 10 on sites where the incidence of pull tabs makes detecting impossible
otherwise.
The audio volume will decrease when a 'bad' target is identified and increase for a 'good'
target.
Retune (5)
This push button resets the level of tune to the level initially set by the user.
8
- No discrimination
- As D1 discriminate 10