User Manual

42
Set up Sonar
S
onar and Side Imaging Models
2
D Display Frequency (CHIRP Off)
Models
H
ELIX SONAR G2
HELIX CHIRP GPS G2/G2N
H
ELIX CHIRP SI GPS G2/G2N
HELIX CHIRP MEGA SI GPS G2N
83 kHz
Select 83 kHz for deep water (more than 800 feet). 83 kHz can be used for deep returns at
high speed. If 83 kHz is selected, the 200 kHz beam pings in the background but is not
displayed.
200 kHz
Select 200 kHz for faster pinging and shallower water (less than 800 feet). If 200 kHz is
selected, the 83 kHz beam is not available.
83/200 kHz
Select 83/200 kHz to ensure both beams ping continuously, so the sonar history is not
interrupted if the Sonar View is closed.
The returns from both beams are blended by starting with the 83 kHz wide beam return,
dimming it, and then overlaying it with the 200 kHz narrow beam return. The 200 kHz narrow
beam sonar returns will stand out from the 83 kHz wide beam sonar returns.
Sonar and Side Imaging Models
2D CHIRP Display Frequency (CHIRP On)
Models
HELIX SONAR G2
HELIX CHIRP GPS G2/G2N
HELIX CHIRP SI GPS G2/G2N
HELIX CHIRP MEGA SI GPS G2N
Medium
Frequency
Select Medium Frequency for deep water (more than 800 feet). Medium Frequency can be
used for deep returns at high speed. If Medium Frequency is selected, the high frequency
beam pings in the background but is not displayed.
High Frequency
Select High Frequency for more detail at shallower depths (less than 800 feet). If High
Frequency is selected, the medium frequency beam is not available.
Medium/High
Frequency
Select Medium/High Frequency to ensure both beams ping continuously, so the sonar history
is not interrupted if the Sonar View is closed.
The returns from both beams are blended by starting with the wide beam return, dimming it,
and then overlaying it with the narrow beam return. The narrow beam sonar returns will stand
out from the wide beam sonar returns.