Adjust Gain [Gain] - JRC JMA-932B-SA User Manual

3.2.4

Adjust Gain [GAIN]

If the gain is too high, unnecessary signals including receiver
noise and false images increase resulting in reduction of
visibility of targets.
On the contrary, if the gain is too low, targets including ships
and dangerous objects may not be clearly indicated.
Be sure to always adjust for the best gain.
※ Also see to the section "3.2.8 Adjust to the Best Image"
Procedures 1 Adjust noise on the radar display by turning the [GAIN] dial until targets
can be easily observed.
Turning [GAIN] dial clockwise increases gain.
Turning [GAIN] dial counterclockwise decreases gain.
Turning the [GAIN] dial clockwise will increase the receiving gain, and the range to observe
radar video is widened. However, if the gain is too high, unnecessary signals including
receiver noise and false images increase resulting in reduction of targets' visibility.
To observe densely crowded targets or short-range targets, turning the [GAIN] dial
counterclockwise will decrease the receiving gain, which enables targets to be easily observed.
However, caution must be taken so as not to overlook a small and important target.
When the optimum setting level is lost, recommend to
readjust the initial setting level once.
The initial setting level is indicated on the bar-graph
with light blue on lower left of the display.
The initial setting level is changed by the each function
mode. See to section 3.9 "USE FUNCTION KEY [USER]"
for details of the function modes
CAUTION
3-8
3.2 Observe and Adjust Video
Present level
Initial setting level
3