Agilent Technologies Agilent E6474A manual Battery charging, E6473B high speed direct connect hub

4Use Your System

Turning the power on

CAUTION

Before switching on any system component, ensure that the supply voltages are in the specified ranges. Refer to “System Information" on page 141.

Battery charging

•For a portable system, verify that the Direct Connect Hub, phone, and computer batteries are fully charged before beginning a survey. Refer to “Batteries" on page 55 for more information.

•For an in-vehiclesystem, verify that the phone batteries are fully charged before beginning a survey.

E6473B high speed direct connect hub

NOTE

The hub has a three-position power switch (refer to Figure 37 on page 75). It controls the power to the hub, the phones, and the scanner or receivers. The blue LED above the power switch will glow after the Direct Connect Hub has initialized.

•Place the switch in the left position to power the unit on. For in-vehicle systems, if the hub is powered on and off by an GPS/DR navigator unit, the switch should be in the left position.

•Place the switch in the center position to power the unit off.

•For in-vehicle systems without GPS/DR navigator, placing the switch in the right position allows the unit to power on and off via the vehicle’s ignition switch.

To allow the receiver to lock onto the GPS signal, allow the system to be powered on at least 3 minutes before starting a data collection test.

74 Agilent E6474A User’s Guide