Magnetic Variation - Raymarine autopilot control unit Owner's Handbook Manual

90
Type 150G/400G autopilot systems
Type 150G/400G autopilot systems have 9 possible response levels.
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RESPONSE
Type 150/400 autopilot systems
Type 150/400 (non-GyroPlus) autopilot systems have 3 possible
response levels:
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RESPONSE 1
RESPONSE 2
RESPONSE 3

Magnetic variation

If required, set this value to the level of magnetic variation present at
your boat's current position – indicated as east ( VAR EAST ) or west
( VAR WEST ). The autopilot sends this variation setting to other
instruments on the SeaTalk system, and it can be updated by other
SeaTalk instruments.
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VARIATION
VAR EAST/ VAR WEST
ST7001+ Autopilot Control Unit - Owner's Handbook
Options
1 to 9
• level 1 gives the least pilot activity to conserve power, but
may compromise short-term course-keeping accuracy
• levels 4 to 6 should give good course keeping with crisp,
well controlled turns under normal operating conditions
• level 9 gives the tightest course keeping and greatest
rudder activity, but may lead to a rough passage in open
waters as the autopilot may 'fight' the sea
Options
AutoSeastate on (Automatic deadband)
• autopilot to gradually ignores repetitive boat movements
and only react to true variations in course
• provides the best compromise between power
consumption and course keeping accuracy
AutoSeastate off (minimum deadband)
• provides tighter course keeping
• increased power consumption and drive unit activity
AutoSeastate off + counter rudder yaw damping
• provides tightest possible course keeping by introducing
counter rudder yaw damping
Options
Default setting = 0°
30°EAST(-30°) to 30° WEST (+30°) in 1° steps