Furuno CSH-5 MARK-2 Manual

COLOR SCANNING SONAR
CSH-5 MARK-2 Operator’s guide
Basic operation
1.PressthePOWERswitchonthemainpanel.
The lamp at the left of the switch lights.
2 . Press the TRANSDUCER “h“ key.
The lamp above the switch lights when the
transducer is fully lowered.
3 . Adjust the BRILLiance and CONTRAST
controls.
4 . Select a display range by RANGE switch
on the control box.
5 . Set a tilt angle by operating the TILTlever.
6 . Adjust the GAIN control.
Eliminating unwanted feeble
echoes (Adjusting TVG)
If the color changes suddenly to weaker col-
ors as the fish echo while it approaches, ad-
just the TVG NEAR and FAR.
1 . Press the MENU key .
2 . Rotate the RANGE switch to select TVG
NEAR or TVG FAR .
3 . Rotate the GAIN switch to set TVG near
or TVG far .
When sea surface reflections or plankton lay-
ers disturb the picture, adjust the NEAR con-
trolto eliminate them.They willbe eliminated
by decreasing the control setting by 1 or 2.
Suppressing seabed tail
Adjusting the AGC control
1. Ratate AGC control clockwise little by
little.
Adjusting PULSELENGTH
1 . Press the MENU key .
2 . Rotate the RANGE switch to select
PULSELENGTH .
3 . Rotate the GAIN switch to reduce the
PULSELENGTH(1:minimum, 10: maxi-
mum).
Suppressing seabed and sea
surface reflection in shallow
fishing
1 . Press the MENU key.
2 . Rotate the RANGE switch to select TX
OUTPUT.
3 . Rotate the GAIN switch to reduce the TX
OUTPUT (1: minimum, 10: maximum).
Rejecting sonar interface and
noise
Adjusting TX CYCLE
(To eliminate interference rings)
1 . Press the MENU key.
2 . Rotate the RANGE switch to select TX
CYCLE.
3 . Rotate the GAIN switch to reduce the TX
CYCLE (1: minimum, 10: maximum).
Adjusting the NOISE LIM control
Weak,unwantedreflections, colored light blue
or green due to contaminated, plankton lay-
ers or ship’s noise can be eliminated by the
NOISE LIM control.
The purpose of this operator’s guide is to provide the basic operating procedures for this equip-
ment. For detailed information, refer to the operator’ manual.
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Adjusting the IR control
Random noise or sea surface reflections in
rough sea conditions can be rejected by the
IR control. However, do not use an unneces-
sary high setting since it may also reject small
wanted echoes.
Measuring range and bearing
to a target
1 . Rotate theTRACKBALL to locate the cur-
sor on the fish echoes.
The range and bearing are displayed at the
left top on the screen.
Detecting fish schools aurally
1 . Rotate theTRACKBALL to locate the cur-
sor to the direction you want to monitor
through the speaker.
2 . Press the R/B key.
The bearing marker will appear in the di-
rection of the trackball mark and echoes
in that direction are monitored through the
speaker.
3 . If you want to cover a certain area, press
the SECTOR SCAN key.
The bearing marker automatically scans in
2°step.
Relocating fish school for
easy observation
1 . Rotate theTRACKBALL to locate the cur-
sor to the position where the own ship
mark is to be moved .
2 . Press the OFF CENTER key.
3 . To move the own ship mark back to the
center of the screen, press the OFF CEN-
TER key again.
Finding fish school center
1 . Press the MENU key.
2 . Rotate the RANGE switch to selectAUTO
TILT WIDTH.
3 . Rotate the GAIN switch to select a tilting
width.
4 . Press the TILT lever to set the center tilt
angle of the scanning.
5 . Read a tilt angle which fish echoes appear
at the strongest reflection.
Registering function key
(F1 or F2)
1 . Press the MENU key.
2 . Rotate the RANGE switch to select FUNC
KEY PROG line.
3 . Rotate the GAIN switch to select FUNC1
or FUNC2.
4 . Press the TX key.
Recalling the registered
function
1 . Press the F1 or F2.
The registered function is recalled.
2 . To cancel it, press the F1 or F2 again.
Changing menu setting
1 . Press the MENU key.
2 . Rotate the RANGE switch to select item
you want to change.
3 . Rotate the GAIN switch to set the con-
tents.
PUB.NO.OSE-12990-A
(9511,TATA) CSH-5 MARK-2
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