Furuno FAR-2827 - Timing, Mbs, Ring Suppression

4.4
Initialize Setting
Initialize Setting Initialize Setting
Initialize Setting
4-14
4.4.2 TIMING, MBS, RING SUPPRESSION
INITIALIZE -> 2: ECHO -> 4, 5, 0
Timing control is executed on the SPU board, and MBS (40 dB attenuation) and ring
suppression (20 dB attenuation) control are executed by the IF board of the TR unit.
The adjusted data is saved on the SPU board.
Make the setting as follows
- RANGE: 0.125NM, S1 PULSE
- GAIN: 70
- SEA: 20-30
- RAIN: OFF
- EAV: OFF
- IR: OFF
- MBS: 0
Photo 4.4.4 Picture under the set condition
Photo 4.4.5 Timing has not been adjusted
Photo 4.4.6 Picture is absorbed due to too
much timing adjustment
Photo 4.4.7 Proper timing adjustment, the
main bang appears near the
center
Picture is absorbed.
Timing not adjusted
Photo 4.4.8 The main bang disappears
because of too much MBS adjustment.
Adjust MBS so that a slight amount o
f
main bang appear. When ring-shaped
echoes appear outside the main bang,
make adjustments in RING
SUPPRESSION.
Appearance of a slight amount of main
bang is desirable.
Erased by adjustment in RING
SUPPRESSION.
Note: Operating range
MBS: 0.21NM
Ring Suppression: 0.22NM
Main bang of radius 5-7 mm