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4.6 Connection of Interface Unit CS-120A
With connection of navigator, the Interface Unit CS-120A and electronic fishing equipment,
the function of the CSH-23/24 series is expanded to include true motion presentation, target
lock, echo sounder picture, FNZ marker presentation and digital indication of position, water
temperature and depth. This chapter provides the information for interfacing the CSH-23/24
series with external equipment.
Connections for true motion and target lock
Heading (digital) and speed (200 pulses/nm) data are required to provide the true motion
and target lock functions. Both data are fed to the display unit via Interface Unit CS-120A.
Basically, there are three methods to feed the data:
• Heading data is fed to J205 from A/D Converter AD-100 and the speed pulse data to
J206 from the speed log.
• Both heading and speed data are fed to J207 or J204 from the CIF line of the
CI-30/50/60.
• NMEA signal is fed to J208 (NMEA port) or J207 (CI/NMEA port).
A/D CONV.
AD-100
INTERFACE
(CS-120A)
DISPLAY UNIT
(CSH-830)
ELECTROMAGNETIC
LOG
DOPPLER
SONAR
CURRENT
INDICATOR
Heding Data
Speed Pulse Data
CIF 10S1148
J205
GYRO
J206
LOG
J201
CN-A5
J204
CIF
(20m MAX)
Heading Data
True Heading Data
Speed Data
Current Data
10S1258
NMEA Signal
NMEA Signal or
CIF Current Signal
J208
NMEA
J207
CI/NMEA
DOPPLER
SONAR
CURRENT
INDICATOR
Figure 4-24 Connection of external equipment to Interface Unit CS-120A
Note 1: AD-100 outputs two types of data. 200 ms interval is available.
Note 2: 200 pulses/mile ship’s speed data can be taken from a doppler sonar current
indicator.