Yokogawa Gyro Compass Cmz 700 User Manual !exclusive! Site
The Definitive Guide to the Yokogawa Gyro Compass CMZ 700: Operation, Maintenance, and User Manual Insights
Section 3: Operation Procedures
This is the most frequently accessed part of the manual. It details:
- Normal Start-up Sequence: Switching on mains, applying latitude setting, waiting for "Settle" indicator.
- Latitude and Speed Setting: Crucial for error correction. The manual provides a formula and quick-reference table.
- Alarm Muting: How to silence the buzzer without resetting the system during sharp turns (where large precession errors are normal).
- Shutdown: The correct procedure to park the gyro (if equipped with a caging device) before long dry-dock periods.
Error 2: Ignoring the "Bubble Check"
The mercury float chamber has a small viewing window. The manual states: "Check the bubble daily. If the bubble is larger than 10mm, the mercury has leaked. If the bubble is absent, the chamber is over-pressurized." Users often skip this because it requires opening the master compass door. Don’t. yokogawa gyro compass cmz 700 user manual
5. ALARMS & TROUBLESHOOTING
4.1 Latitude Setting
The CMZ 700 compensates for earth’s rotation based on latitude. The Definitive Guide to the Yokogawa Gyro Compass
- Auto mode (default): Receives GPS over NMEA (GGA or RMC).
- Manual mode: Enter latitude within ±80°.
The 4-Hour Rule vs. Dynamic Settling
The manual explicitly states a 4-hour settling time for full accuracy (0.1° steady-state). However, experienced navigators know the manual implies two distinct modes: Error 2: Ignoring the "Bubble Check" The mercury
- Latitude Settling: The gyro seeks true north based on Earth’s rotation. The manual warns against changing the latitude setting during the first 2 hours.
- Dynamic Error: While the manual covers speed/latitude error correction tables, it rarely emphasizes that the CMZ-700 requires manual speed input. Failure to update this via the manual’s formula introduces latitude error (sin φ * V/R error).