Leica MX400 Operating Instructions Manual page 164

Configuration
Data Input Port No.: When wired per Table 9 of the Installation &
Service Manual, select port 3. The SJB can be configured on any
of the receiver four interface ports. The input and output to and
from the SJB must be on the same port. Port 3 is suggested as
the default port because: port 4 is used for Dual Head configura-
tions; port 2 is used for PC or RS-232 configurations; and this
leaves port 1 available from the five pin connector on the
receiver rear panel for equipment interfacing near the receiver.
Alarm If No Data: Select between Yes and No, the default is Yes.
An alarm is generated, and message displayed, if no control or
heading data is received on the port.
Alarm If Low Battery: Select between Yes and No, the default is
Yes. An alarm is generated, and message displayed, if the SJB
loses AC power and begins operating from the 30 minute
backup battery.
Gyro Heading: Input the Initial Gyro Heading. Move the cursor to
the Gyro Sector field and select the appropriate sector value.
When you slew the gyro, this heading will not change. However,
when you view the Gyro heading in the lower window, and slew
the gyro, the value displayed in this lower window should
change with the gyro.
Gyro Sector: Sets the gyro's step ratio. Available choices are:
360:1, 180:1, 120:1, 90:1, 72:1, 60:1, 52:1, 45:1, 40:1, or 36:1
Gyro Bias: This input provides the ability for the user to enter a
constant correction value for the gyro. This input is used when
the gyro is known to be installed slightly off the boats center-
line.
Log Input Pulses: This is the calibrated pulses per nautical mile that
Version 3.3
Operator's Manual
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