Sjb - Smart Junction Box Control - Leica MX400 Operating Instructions Manual

Operator's Manual
Manual Input: You can enter your own Set & Drift values. Nor-
mally this would only be done when you are aware of what the
water speed and direction (Set & Drift) generally are (without
sensors). When Manual Input is set to Yes, the receiver applies
the users constant during DR navigation. If you have no idea
what the water speed and direction are (Set & Drift), is better to
set Manual Input to No, and the receiver will not apply any
correction.
Using Set & Drift for DR Positioning:
If GPS positioning is lost and the unit reverts to DR mode, the
receiver uses the derived Set and Drift as described above until the
user defined time out period expires. When the time out period
expires the receiver uses either a user entered Manual Set & Drift
(Manual Input set to Yes) or 0 (zero; Manual Input set to set to No).
The receiver begins applying manual input Set & Drift after the
time-out period you specify (default 10 minutes), based on the
conditions stated above.

SJB - Smart Junction Box Control

The Smart Junction Box (SJB) is a product previously used with the
older Leica MX 200 and MX 300 GPS navigators. The SJB's
primary purpose is to provide an analog to digital conversion of
gyro inputs, but it also has other features, which are described in the
Installation & Service Manual.
This screen provides all of the alarm and configuration settings
needed to setup the SJB. The receiver will use this information, in
conjunction with the available GPS information to calculate Set and
Drift (when enabled; refer to Set & Drift on the previous page),
calculate Heading To Steer, and Dead Reckon your position, should
you lose GPS for any period.
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Configuration
Version 3.3