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RC4000 ACU Boardset
Chapter 2
Hardware
2.1.2.2.14 J13B – ACC/Compass
Designation
PCB
Pin Count
Connector
Type #
J13B
ACC
16
Phoenix Double Header
10
J13 provides a double row of pins. The bottom 16 pins are designated "J13B" and are typically allocated
for interfacing to various compass options. The flexible I/O scheme provides DC power, serial data and a
10 bit analog to digital input.
Single Axis Compass
This drawing shows how J13B would interface with the Single Axis Compass (see 2.2.4).
The drawing also shows how three inputs available on J13B are nominally allocated to support
"polarization identification" bits in cases where multiple feed types may be automatically sensed. See
section 3.3.1.2.4
for discussion of this situation.
Fluxgate Compass
This drawing shows how J13B would interface to a fluxgate compass (see 2.2.3).
NOTE: the KVH C-100 compass should be wired for 24VDC operation (rather than 5VDC operation).
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