Whistler GT-438G Owner's Manual page 25

Segmented Selectable Laser Receiver
If these alerts are bothersome, you may wish to turn on the
LSID feature and make note of the PPS rate for these
occurrences.
The laser validation windows are separated into segments
allowing for customization in your country.
Segment
LASER 1
LASER 2
LASER 3
LASER 4
LASER c
LASER XR
If laser within a group is not used in your area, you may shut
off that group (change the selection from Y to N while in
Option Select Mode) by pressing the
POP™ Mode Alerts
Because POP™ Mode radar utilizes the same K or Ka band
frequencies, POP™ Mode Alerts will initially be displayed as POP K
or POP Ka then switch to band and signal strength.
OPERATION
Pulse Rate
valid up to 900Hz
valid from 1100Hz - 2000Hz
valid from 2000Hz - 3000Hz
valid from 3000Hz - 4000Hz
valid from 900Hz - 1100Hz
valid for the TraffiPatrol XR
DARK or QUIET buttons.
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