Furuno CH-500, Operator'S Manual

Page: 82 / 109

5. MENU OPERATIONS
5-12
5.12.3 How to set the harmonic pattern
You can customize the sound output to suit your preferences.
To adjust the harmonic pattern, do the following:
1. Referring to section 5.5, open the [System] menu.
2. Press
T
or
S
to select [Audio], then press
X
. The [Audio] settings window ap-
pears.
3. Press
S
or
T
to select [Harmonic Pattern].
4. Press
X
or
W
to select the desired pattern.
The available options are: [1], [2] and [3].
5. Press the MENU key twice to close the menu.
5.12.4 How to filter for doppler shift
You can filter the sound output to compensate for doppler shift, created by your ship
when in motion, or a moving school of fish.
To enable or disable the auto filter, do the following:
1. Referring to section 5.5, open the [System] menu.
2. Press
T
or
S
to select [Audio], then press
X
. The [Audio] settings window ap-
pears.
3. Press
S
or
T
to select [Auto Filter].
4. Press
X
or
W
to select [Off] (disable the filter) or [On] (enable the filter). The output
sound is affected in the following manner:
• [Off]: Doppler shift is not compensated. Detected echoes are output with the
sound level increasing incrementally for echoes moving toward the ship, and
decreasing incrementally for echoes moving away from the ship.
• [On]: Doppler shift is compensated. Echoes are output in the same manner, re-
gardless of direction.
Note: The filter is only applied to doppler shift from fish echoes and own ship
movement. It does not affect doppler shift from other sources.
5. Press the MENU key twice to close the menu.