Agilent Technologies Agilent E6474A - Manual (Page 53)

Set Up Your System 3
Agilent E6474A User’s Guide 53
Gyro positioning
To avoid inaccuracies in dead reckoning, the Gyro in the Agilent
Direct Connect GPS/DR must be positioned so that it is within
10 degrees of vertical or horizontal. The Gyro must be set to
indicate the Up position on the unit as follows:
1 Position the unit either horizontally or on its right edge
(vertically).
2 Turn the Gyro Position knob counter-clockwise to loosen it.
3 Slide the pin so that it indicates the applicable Up position.
4 Turn the Gyro Position knob clockwise to tighten it.
Connecting the Speed Pulse
When connecting the Speed Pulse cable, the following wiring
scheme is used:
Figure 24 Setting the Gyro pin. If the unit is set on its right side, the pin is set at the alternate position.
CAUTION
The dead reckoning system is comprised of the Gyro and the Speed
Pulse (odometer) connection. The connection of the Speed Pulse cable
is vehicle-specific and should be performed by persons trained to do
such installations.