Manual
LIGHT 
THE LIGHT PARAMETER  
The LCD backlight is illuminated whenever any of the 
buttons are pressed on the Geo. The LIGHT parameter 
is used to set the amount of time that the backlight 
stays lit between 0.0 and 20.0 seconds in 0.5 second 
increments.
SLEEP 
THE SLEEP PARAMETER 
If the Geo is inactive for a period of time then it will 
automatically switch off in order to save power. The 
SLEEP parameter is used to set that time between 5 and 
60 minutes in 5 minute increments.
TIMING 
THE TIMING MENU
The parameters on the Timing Menu all relate to the 
timing of specific events.
DWELL 
THE DWELL PARAMETER 
The 
DWELL parameter sets the amount 
of time that the solenoid is energized 
and therefore the amount of air that 
is released with each shot of the Geo. 
Setting this parameter too low will result 
in low velocity shots and/or excessive 
shot to shot velocity fluctuations. 
Setting the parameter too high will 
simply waste gas and make the Geo 
louder.
The 
DWELL can be set between 0.0 and 
25.0 milliseconds. The factory default 
setting can normally be reduced after a 
few thousand shots as the Geo ‘beds-in’.
FSD COMP 
THE FIRST SHOT DROP-OFF COMPENSATION 
PARAMETER 
First shot drop off is a reduction in 
velocity of the first shot fired after an 
extended period of not firing and is 
caused by the stiction between dynamic 
o-rings and the surfaces that they are 
in contact with. In order to compensate 
for FSD this parameter can be set to add 
extra time to the DWELL parameter for 
the first shot. This parameter can be set 
between 0.0 and 5.0 milliseconds.
FSD DLY 
THE FIRST SHOT DROP OFF DELAY PARAMETER 
This parameter sets the amount of time 
after the last shot before the FSD COMP 
is used on the next shot. The first shot 
after powering on the Geo will always 
have FSD COMP. This parameter can be 
set between 30 and 240 seconds in 10 
second increments.
ADVANCED SET-UP
44.
CONTENTS
ORIENTATION
QUICK SET-UP
USING YOUR GEO
ADVANCED SET-UP
MENU TREE
MAINTENANCE
FAULT FINDING
SERVICE CENTERS
PARTS LIST
SPARES & ACCESSORIES
45.
ADVANCED SET-UP
ADVANCED SET-UP
QUICK GUIDE










