Control Sensitivity

The Control Sensitivity Instrument allows you to adjust how responsive the ROV is to joystick and depth control inputs.

The control sensitivity is determined by the values of control gains, which range from 0 to 100. The control input applied by the operator is multiplied by the gain before being sent to the ROV as a command to drive the thrusters. A gain setting of 100 and maximum control input will result in the thrusters operating at full available power. If the gain is reduced, the same maximum control input will result in correspondingly less thruster power. Lower gain settings allow the operator to have more precise control over the vehicle at the expense not having the maximum power available. For example, new users may find it easier to pilot the ROV using lower gain settings until they get used to the handling characteristics of the vehicle. A gain setting of 0 will result in no thrust for any level of control input, and a boost mode allowing numbers of up to 110 is available - see the boost mode below.

The Pro 4 Ultra is a very responsive vehicle. The gain settings can be adjusted at any time according to the piloting requirements. New users may find it easier to learn how to pilot the ROV by decreasing the Yaw gain.

Display

Visual Input Mode

Text Input Mode

Use

You can independently control the sensitivity of the following control parameters:

left joystick)
• Vertical Down (usually mapped to theleft joystick)

There are two ways to set the sensitivity, visually or numerically. In addition you can save three favorite settings for easy recall.

Adjusting the Sensitivity Visually

To adjust the control sensitivity visually, click on the graph button in the lower right hand corner of the control sensitivity instrument. The left hand side of the instrument will display a vertical bar on the left for Vertical Up and Down gains, and a polar grid area on the right for the Surge and Yaw gains. The green shaded region in both areas gives a visual indication of the gain settings. Left click and drag the vertical bar to set the Vertical gain symmetrically for up and down. Right click and drag to set the up and down gain independently. The top of the bar is for Vertical Up thrust and the bottom for Vertical Down thrust. Likewise, left click and drag in the polar region to set the Surge gain (indicated by the top and bottom values) and Yaw gain (indicated by the left and right values). When you left click and drag, the gains are adjusted symmetrically as indicated by the circular green shaded area. Right click and drag in the polar region to adjust the Surge independent of the Yaw. The top and bottom of the polar area are for Surge and the left and right are for Yaw. You can also move the slider above the graph area to decrease or increase all of the gain settings uniformly. Moving the slider to the left decreases the gains and moving it to the right increases the gains.

For the surge and Yaw, when clicking and dragging with the left button, the gains are set to the radius of the circle at the point of release.

Adjusting the Sensitivity Numerically

To adjust the control sensitivity numerically, click on the number (#) button in the lower right hand corner of the control sensitivity instrument. The left hand side of the instrument will list the control parameters and display input fields for the gains. You can enter a number from 1 to 100 in each of the input fields.

Adjusting the Sensitivity Using the Slider

You can also move the slider at the top to decrease or increase all of the numbers uniformly. Moving the slider to the left decreases the gains and moving it to the right increases gains.

Saving Favorite Settings for Recall

The Control Sensitivity Instrument also has three buttons for quickly setting the gains to preset or saved values.