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May
2015
WorkHorse H-ADCP Operation Manual
Page 126
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Compass Commands
The compass calibration algorithm corrects for distortions caused by ferrous material near the H-ADCP to
give you an accurate measurement.
Available Compass Commands
This section lists the available compass commands.
>a?
Available Commands:
AC ----------------------- Output Active Fluxgate & Tilt Calibration Data
AD ----------------------- Display Calibration Data
AF ----------------------- Field Calibrate to remove Hard and/or Soft Iron Error
AR ----------------------- Restore Factory Fluxgate Calibration data:
make factory the active calibration data
AX ----------------------- Examine Compass Performance
AZ 0.000000 ------------ Zero pressure reading
A? ----------------------- Display Public Sensor Commands
>
Compass Command Descriptions
AC – Output Active Calibration Data
Purpose
Outputs active fluxgate and tilt calibration data.
Format
AC
Recommended Setting. Use as needed.
Description
The AC command is identical to the AD command except that the AC command doesn’t
prompt the user for Factory or Active Calibration data; it assumes active. The AC Com-
mand doesn’t prompt the user to “press any key to continue...” when the screen is full.
Example
See below
>ac
ACTIVE FLUXGATE CALIBRATION MATRICES in NVRAM
Calibration date and time: 4/6/2000 11:00:29
S inverse
+ +
Bx ¦ 2.8071e-01 -2.8343e-01 -3.8045e-02 1.1574e-02 ¦
By ¦ 8.6383e-04 1.8275e-03 -3.8555e-01 2.9522e-03 ¦
Bz ¦ -1.3365e-01 -1.2769e-01 4.9614e-03 -2.2870e-01 ¦
Err ¦ 3.5561e-01 3.3613e-01 -6.3830e-04 -3.9550e-01 ¦
+ +
Coil Offset
+ +
¦ 3.4253e+04 ¦
¦ 3.5362e+04 ¦
¦ 3.5650e+04 ¦
¦ 3.3749e+04 ¦
+ +
Electrical Null
+ +
¦ 34575 ¦
+ +
TILT CALIBRATION MATRICES in NVRAM
Calibration date and time: 4/6/2000 10:58:42
Average Temperature During Calibration was 26.6 °C
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