User`s guide

88 Agilent E6474A User’s Guide
4 Use Your System
Turning the Power On
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 “Battery Use and Care" on
page 84 for more information.
• For an in-vehicle system, verify that the phone batteries are
fully charged before beginning a survey.
E6473B High Speed Direct Connect Hub
The Direct Connect Hub has a three-position power switch. 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 Direct Connect 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.
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 E, “Permanent In-Vehicle
Hardware Installation,” starting on page 207.)
NOTE
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.