Steps to create line features with a GPS

Tap the arrow below the Feature tool to display the drop-down list. Tap the Polyline feature tool.
The Add GPS Vertex and Add GPS Vertices Continuously buttons are enabled if the GPS is activated.
Tap the Add GPS Vertex button each time you want to use the current GPS position coordinates to capture a vertex.
The vertices are drawn with a blue box and joined with a line using the current selection color.

At any time, tap and hold anywhere on the map to display the Capture menu. Refer to the Creating line features task for more information on the Capture menu. Use the Capture menu to create vertices at specified x,y coordinates or relative to the last vertex or the current GPS position. You can also delete the last vertex.
The Point/Vertex dialog box is automatically displayed if GPS position averaging is enabled for vertices.

The Point/Vertex dialog box shows a progress bar, which counts down from the specified number of GPS positions to average until it reaches zero.

If you tap OK before the averaging is complete, a dialog box will display asking whether you want to terminate the GPS position averaging.

Tap the X button to cancel the capture of the vertex.
Tap the Add GPS Vertices Continuously button to use the incoming GPS coordinates for capturing vertices in a streaming mode. A vertex will be captured each time ArcPad receives a coordinate from the GPS. Vertices are captured according to the specified streaming vertices position and distance intervals.
Tap the Proceed button to complete the new line feature.
The Feature Properties dialog box, or custom edit form, is automatically displayed after the new line feature has been created.
On the Attributes tab, tap the Value field to open the associated Value text box for typing in attribute data.
For example, tap on the Value field for STREET_NAM to open the associated Value text box and type the street name value of “New”.
Tap OK.