KVH Industries TracVision G4 Technical Manual page 40

Connecting the Sine/Cosine Interface (Optional)
The GyroTrac ADCU sine/cosine interface provides the following
outputs:
• sine
• cosine
• inverse sine
• inverse cosine
• reference voltage
Green Label
1 2 3 4 5
Because the reference voltage is a reference output, not an input,
connecting this output to another reference output from an
autopilot or other system will cause problems.
In this case, connect the following wires from the autopilot (or
other system) to the green ADCU terminal strip connector:
Autopilot/Other System Wire
Sine
Cosine
Internal Power Ground
(not chassis ground!)
Reference (INPUT)
DO NOT connect the autopilot or other system to the ADCU reference
output (ADCU terminal 8) if the autopilot has its own internal
reference. Review the user's manual for the selected equipment.
54-0147
6 7 8 9 10 11 12
Sine
Sine (inverted)
Cosine
Cosine (inverted)
Ref
Ground
Terminal Connector
12
10
7
8 (KVH Output)
Figure 2-26
Sine/Cosine ADCU Wiring
The sine/cosine reference voltage is
an OUTPUT, not an INPUT.
Connecting this output to the
reference output for an autopilot or
other system can cause problems.
This section explains how to resolve
most issues.
Table 2-6
GyroTrac/Autopilot Sine/Cosine
Wiring Arrangement
Before connecting the Autopilot
internal ground to ADCU terminal 7,
use a low impedance voltmeter to
make certain that there is no DC
voltage between the two terminals.
A DC surge could damage one or
both systems.
Installation
35