4.6 Connection of Interface Unit CS-120A
With connection of navigator, the Interface Unit
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
Basically, there are three methods to feed the data:
•Heading data is fed to J205 from A/D Converter
•Both heading and speed data are fed to J207 or J204 from the CIF line of the
•NMEA signal is fed to J208 (NMEA port) or J207 (CI/NMEA port).
A/D CONV.
ELECTROMAGNETIC
LOG
DOPPLER
SONAR
CURRENT
INDICATOR
DOPPLER
SONAR
CURRENT
INDICATOR
| J205 |
|
| J208 |
|
|
|
| NMEA Signal | |||
| GYRO |
|
| NMEA |
|
|
|
| ||||
Heding Data |
|
|
|
|
|
|
|
|
| |||
|
|
| J207 |
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
| NMEA Signal or | ||||
|
|
|
| CI/NMEA |
|
|
|
| ||||
|
|
|
|
|
|
|
| CIF Current Signal | ||||
| INTERFACE |
|
|
|
| |||||||
|
|
|
|
|
|
|
| |||||
| J206 |
|
|
|
|
|
|
| ||||
|
|
|
|
|
|
|
| |||||
|
|
|
|
|
|
|
|
|
|
|
| |
| LOG |
|
|
|
|
|
|
| DISPLAY UNIT |
| ||
Speed Pulse Data |
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
| |||
CIF 10S1148 | J204 |
|
|
|
|
|
|
|
|
| ||
(20m MAX) | CIF |
| J201 |
|
|
|
|
|
|
| ||
Heading Data |
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
| |
True Heading Data |
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
| ||
Speed Data |
|
|
|
|
|
|
|
|
|
|
|
|
Current Data |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 10S1258 |
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
|
|
Figure 4-24 Connection of external equipment to Interface Unit CS-120A
Note 1:
Note 2: 200 pulses/mile ship’s speed data can be taken from a doppler sonar current indicator.
24