1. OPERATION
1-17
1
1.7
How to Adjust the Gain
Depending on the signal strength, gain can be adjusted to hide noise and other un-
necessary echoes. A high gain setting increases signal strength and can show exces-
sive noise as well as smaller, hard to detect echoes. A low gain setting eliminates
noise and gives a clearer picture, however smaller echoes may also be removed.
1.7.1
How to adjust the gain for the FCV-38
1. If the header is not displayed, put the cursor at the top edge of the display to show
it.
2. Click the [GAIN] indication on the header. The indication is now highlighted in a
green color.
3. Select one of the following gain adjustment methods.
• Click the [GAIN] indication again. Each click changes the mode indication in the
GAIN header in the sequence of
[SB](Split Beam)
→
[B1](Beam1)
→
[B2](Beam2)
→
[B3](Beam3)
→
[B4](Beam4)
→
[B5](Beam5)
→
[SB]
→
... (inactive modes are skipped).
For example, the [MODE] indication shows [B1/SB]. Then, each click of the
[GAIN] indication switches between [SB] and [B1]. The red frame encloses the
Mode, Gain indication of the image currently selected for adjustment.
• Click the “Mode and gain settings indication” of the image that you want to ad-
just. The indication clicked is enclosed with the red frame, and the [GAIN] mode
display changes accordingly.
4. Scroll to change the gain.
Scroll downward to increase the gain; upward to decrease the gain. The current
gain setting appears in the [GAIN] indication. Adjust it so that a slight amount of
noise appears on the screen.
Too high
Proper
Too low
NOTICE
NOTICE
Adjust the gain properly.
Too little gain may present no picture.
Too much gain shows excessive
noise on the picture.
Currently selected mode
[GAIN] indication
Red frame marks currently selected mode.
Mode and gain settings
