3. SETTING AND ADJUSTMENT
3.4Adjustment Sweep Timing
Sweep timing differs with respect to the length of the signal cable between the antenna unit and the processor unit. Adjust sweep timing at installation to prevent the following symptoms:
•The echo of a “straight” target (for example, pier), on the 0.25 m range, will appear on the display as being pulled inward or pushed outward. See Figure below.
•The range of target echoes will also be incorrectly shown.
(1) Correct | (2) Target pushed | (3) Target pushed |
| inward | outward |
Examples of correct and incorrect sweep timings
1.Transmit on the 0.25 nm range.
2.Adjust radar picture controls to display picture properly.
3.Select a target echo which should be displayed straightly.
4.Press [4] key to choose the [TIMMING ADJ] on the [ECHO ADJ] menu.
[ECHO ADJ]
1BACK
2CABLE ATT ADJ AUTO/MANUAL 30
3HD ALIGN 000.0°
4TIMING ADJ
0
5MBS 0
6DEFAULT ANT HEIGHT 5/7.5/10/15/20/ 25/30/35/40/45/ more 50 m
7NEAR STC CURVE 2/2.5/3/3.5/4.2
8MID STC CURVE
3/4/5/6
9FAR STC CURVE 6/7/8
0RING SUPPRESSION 0
5.Rotate the wheel to set a suitable value which causes the target to be displayed straightly. The setting range is 0 to 4095.
6.Press the [MENU] key to finish.
