User's Manual

MDC-7000P/7900P Series Chapter 4 Target (AIS,TT and Trial manoeuvre)
0093169006-05E 4-3
CPA/TCPA alarm
The menu of “[TARGET] => [CPA/TCPA]” sets the alarm function ON or OFF.
To avoid collision, it sets up LIMIT CPA (closest point of approach) and LIMIT TCPA (time to CPA).
[LIMIT CPA] and [LIMIT TCPA] can be changed directly at the upper right of the display.
1 Move the cursor to set the value window of [CPA] at the upper right of the display.
Press ENT key and change the setting value with the trackball.
Press ENT key to save after changing the setup value.
2 In addition, [LIMIT TCPA] is used to specify limit by time.
LOST ALARM
LOST ALARM function of target status area can be changed lost alarm ON or OFF mode of TT (ARPA)
and AIS target.
1 When LOST ALARM is ON, lost target symbol is displayed on the last reported (known or
predicted) target position and a lost target warning is appeared on alarm area display until
confirmation operation with OFF key.
2 When LOST ALARM is OFF, lost target symbol is not displayed, and does not appear lost alarm
message on alarm area display.
Note: When Sleeping lost of AIS alarm mode sets to OFF, Lost of AIS sleeping target will delete without
using confirmation operation.
Refer to 4.2 AIS “AIS alarm [Sleeping lost]”.
LOST ALARM
function