JRC JMA-5204 Instruction Manual page 383

The quantization level can be entered using the numeric keypad, or the multi-function
control knob.
When entry is complete, set the cursor over the "ENT" button on the numeric keypad, and
press [ENT].
You can set this value smaller to detect targets with weaker signals, but by doing so the
unit may pick up unwanted signals that can cause the display of targets to be unstable.
Setting this to a larger value can cause the unit to ignore weaker signals. Filtering out
unwanted signals can stabilize the display of targets, but targets with weaker signals can
be more difficult to detect.
Exit 1 Press [RADAR MENU] key.
The Main Menu will reappear.
[III] Gate Size Adjustment (Gate Size)
Use the target tracking function (TT) to set a target search area.
The gate size is adjusted to an optimal value, so do not change it carelessly.
Procedure 1 Hold down [RADAR MENU] key.
The Code Input Menu will appear.
2 Press [0] key.
3 Move the cursor onto the "ENT" button
in the Code Input menu, and press
[ENT] key.
The Adjust Menu will appear.
4 Press [8] key while Adjust Menu is
open.
SP/TT INIT Setup menu opens.
5 Press [2] key.
TT menu opens.
6 Press [5] key and select a desired gate size.
Narrow:
Normal:
Wide:
Exit 1 Press [RADAR MENU] key.
The Main Menu will reappear.
Small gate size
Medium gate size
Large gate size
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7.4 ADJUSTMENT
7