Manual
DWELL 
THE DWELL PARAMETER 
The DWELL parameter sets the amount of 
time that the solenoid is energized and 
therefore the amount of gas that is released 
with each shot of the Geo2. Setting this 
parameter too low will result in low velocity 
shots and/or excessive shot to shot velocity 
uctuations. Setting the parameter too 
high will simply waste gas and make the 
Geo2 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 
Geo2 ‘beds-in’.
FSD COMP
THE FIRST SHOT DROPOFF 
COMPENSATION PARAMETER
First shot drop o is a reduction in velocity 
of the rst shot red after an extended 
period of not ring and is caused by the 
stiction between dynamic o-rings and the 
surfaces that they are in contact with. In 
order to compensate for rst shot drop-o 
this parameter can be set to add extra 
time to the DWELL parameter for the rst 
shot. This parameter can be set between 0.0 and 5.0 
milliseconds.
FSD DLY
THE FIRST SHOT DROPOFF DELAY 
PARAMETER
The time that has to elapse before the 
FDS COMP is applied to a shot following a 
previous shot. This parameter can be set 
between 00:00 and  04:00 minutes.
FILTER 
THE FILTER MENU 
The parameters on the FILTER menu are all used to tune the 
Geo2’s software lters which prevent the Geo2 from ring 
unless all of the necessary conditions are met. The factory 
default settings will be suitable for most set-ups, however 
certain loader and trigger set-ups may require modication 
of one or more of these parameters.
38.
ADVANCED SET-UP










