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5-10
Adjustment
1. Set the controls on the radar as follows:
Range: 6 nm
A/C SEA, A/C RAIN, GAIN: fully counterclockwise
2. Connect a digital multimeter, set to 10 VDC range, to the following points on the ARP
Board: (+), TP11 (VS+), (-), TP10 (VS-).
J1
ARP-17 Board
18P9004A
S1 (All segments OFF.)
R120
R121
TP10 (VS-)
TP11 (VS+)
Figure 5-7 ATA Board
3. Adjust potentiometer R121 (“OFFSET") on the ATA Board to show +0.09 to 0.13 V.
4. Set the radar controls and switches as follows:
Range: 24 nm
A/C SEA, A/C RAIN, GAIN: fully counterclockwise
Interference rejector: OFF
Echo stretch: OFF
5. Press [MENU] [0] [0] [0] [0] [6] [6] [0] [0] to display the SET UP 2 menu.
[SET UP 2]
1. ↑
2. LOG RATE 0200
3. HDG SNSR GYRO MAG
4. KEY BEEP OFF ON
5. HU TB OFF ON
6. VIDEO NORMAL QV
7. OS & ANT
8. BLIND SCTR
9. OTHER
Figure 5-8 SET UP 2 menu