JRC JMA-7710-6 Instruction Manual page 166

[III] Setting the gate size
The gate indicates "the area where the radar computer monitors a target which is being tracked." When the
gate size is too large, the target will not be lost, but the target might swap to another adjacent target.
When the gate size is set to SMALL, target swap is less likely to occur but there is a risk
that the target may not be tracked and therefore be lost.
Usually, the gate size is set to "NORMAL".
The gate size should only be set to "SMALL" when there are may tergets close together (for example -
within the approaches of a port) and the risk of target swap is high.
ATA TEST
ATA TEST
1. TEST VIDEO
2. VECTOR CONST
3. VIDEO TD LEVEL
4. VIDEO HIGH LEVEL
5. VIDEO LOW LEVEL
6. GATE SIZE
7. ATA NOISE LEVEL
8. ATA FTC LEVEL
1. Press the
Procedures
Procedures
2. Press the
3. Press
4. Press the
5. Press the
6. Press the
7. Press the
8. Press the
Exit Exit
VDG VDH VDL
7
2 4
1 8
6
NORMAL SMALL
220
214
SUB
key to open the SUB MENU.
MENU
5
key to open the ATA #1 menu.
9
key to open the ATA #2 menu.
3
key to open the ATA TEST menu.
6
key to select "GATE SIZE".
6
key to select "NORMAL" or "SMALL".
ENT
key to set the gate size.
SUB
key.
MENU
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