The test verifies proper operation of the outputs (displays, indicator lamps, and audible alarms).
The internal circuits are automatically checked.
The operator must observe the outputs in order to determine whether the displays are operating properly. The length of time for the test is approximately three seconds.
During this test, all alert indicators flash. Also, the display window shows the following information:
- All units of measurement (degrees Celsius, kPa, miles, km, rpm, and liters)
- "X10" indicator
- Symbol for hour meter
- "8.8.8.X.8.8." on the digital readout
The tachometer and the gauge needles ramp straight up. Then, the gauge needles go to the right and to the left. The gauge needles then go to the final position.
- The gear/direction readout shows an asterisk.
- The digital speedometer shows "188" mph and km/h.
- The indicator lamp is on continuously.
- The audible alarm sounds once.
The display then goes into the Normal Mode of operation or the display scrolls through the modes if the service input and the clear input are grounded or the operator switch input is grounded.