Agilent Technologies manual Agilent direct connect GPS/DR, Agilent E6474A User’s Guide

Models: Agilent E6474A

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Agilent direct connect GPS/DR

Use Your System

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Normal ON

ON via ignition

OFF

Figure 37 E6473B hub power switch positions

Agilent direct connect GPS/DR

If the ignition sense lead of the main power cable has been connected to a +12 volt source, the navigator powers up when the vehicle’s ignition is switched on and the power switch is in either the Ignition (right) or Power (left) position. (For installation instructions, Appendix D, “Permanent In-Vehicle Hardware Installation,” starting on page 171.)

LEDs and display during power-up

The upper front panel LED indicates Power, and the lower LED indicates 1PPS (Pulse Per Second). The information shown on these two LEDs comes from the GPS Receiver. One use of the 1PPS would be to indicate that the GPS receiver is active. 1PPS is also available at pin 9 of the rear panel RS-232 DB9 connector and is enabled by software.

The Agilent direct connect GPS/DR status LCD displays power-up and navigation status messages. The front panel LEDs indicate CPU status, speed pulse status, and serial port activity.

Determining GPS receiver status

You can determine whether the GPS Receiver is ready to navigate by using the E6474A software as follows:

1Start the E6474A software, and select Tools > Navigation to display the Navigation dialog box.

2Click the Live Mode button.

3When the GPS Navigator is ready to track, the Satellites box shows the number of satellites tracked, and the Navigation

Agilent E6474A User’s Guide

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Agilent Technologies Agilent E6474A manual Agilent direct connect GPS/DR, LEDs and display during power-up