KVH Industries KVHTRACVISION G4, Technical Manual

Page: 48 / 164

Connecting the Sine/Cosine Interface
(Optional)
The GyroTrac ADCU sine/cosine interface provides the following
outputs:
• sine
• cosine
• inverse sine
• inverse cosine
• reference voltage
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 Terminal Connector
Sine 12
Cosine 10
Internal Power Ground 7
(not chassis ground!)
Reference (INPUT) 8 (KVH Output)
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.
Installation
54-0147
35
1 2 11 10 9 8 7 6 12 5 4 3
Sine
Cosine
Ref
Ground
Sine (inverted)
Cosine (inverted)
Green Label
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.
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.
Figure 2-26
Sine/Cosine ADCU Wiring