Koden MDC-2900, Operation Manual

Page: 154 / 191

MDC-2900 Series Chapter 4 General operation (Menu)
0093129012-06 4-51
MBS (Main Bang Suppression)
Selection values: 0 to 30
Refer to “
Setup of MBS (Main Bang Suppression) value
” (page1-4)
TT (ARPA) TGT LEVEL
Selection values: 0 to 30
This is to set up the intensity level of target to acquire with TT (ARPA).
* The low level easily acquires small and weak targets. But, noise may be acquired if the level is too
low.
* The high level does not acquire noise and easily acquires target ship only. But, target may be missed
if the level is too high. Pay attention to that.
VIDEO SETUP
Selection values: 0 to 255
This is to set up signal level to display brilliance gradation for each transmitting pulse width.
Wider brilliance difference between LOW LEVEL and HIGH LEVEL increases the display gradation of
dynamic range large.
Set up LOW LEVEL to start with.
• LOW LEVEL
This is to set up display brilliance of the minimum signal level.
1 Set range to 6NM (pulse width LP1).
Set GAIN knob to the maximum position.
Set RAIN knob to the minimum position in DIFF (Differentiation) mode for RAIN.
Set SEA knob to the minimum position in MAN mode for SEA.
2
Change the LOW LEVEL setting value so that background noise is displayed weakly.
3
Confirm background noise is completely fade-out by setting GAIN knob to the minimum position.
* If the setting value is too small, the noise does not fade out even at the minimum setting of GAIN
knob.
* If the setting value is too large, targets are not displayed.
• HIGH LEVEL
1
Set range to 6NM (pulse width LP1).
Set GAIN knob to the maximum position.
Set RAIN knob to the minimum position in DIFF mode for RAIN.
Set SEA knob to the minimum position in MAN mode for SEA.
2
Adjust GAIN knob to set stable strength target to the 6th gradation. (There are 7 gradation levels
for echo display brilliance in total and 7th is the maximum).
3 Operate [RANGE] key or [SP/LP] key to change pulse width from LP1 to LP2 (25kw only).
4
Adjust HIGH LEVEL LP2 to set previously detected target to be the 6th gradation.
5
Similarly, adjust MP4, MP3, MP2, MP1 and SP in the same way.