KVH C100 Flux Gate Compass

This C100 showed up on eBay advertised as "KVH C100 Fluxgate Compass Engine / Heading Sensor Apps" by seller avitarunlimited.  It contains the KVH C100 Flux Gate magnetic compass with the PCB mounted above the Flux Gate assembly.

The  box is labeled:
Heading Reference Unit
p/n: 1022-0100-0000
s/n: 0294
NDS Navigation Data Systems, Inc.
New Orleans, LA 70123, USA
(no CAGE number, as of 2009 out of business)

It looks like a stock KVH C100 Flux Gate Compass mounted in a non ferrous box that uses a DB-9-male connector for the interface. 
The C100 has three I/O options that can use used depending on how it's wired.
The NDS box has brought out the RS-232 interface and ignored the analog and TTL digital interfaces.

Wiring Table

KVH			NDS DB-9m	Computer DB-9
RS-232 Serial I/O			nc: 4, 6, 9
Pin	Description
P2-4	RxD TTL level RS-232	Yel	5	3
P2-11	TxD TTL level RS-232	Pink	3	2
P2-12	Inverted TxD TTL level RS-232	Tan	8
P2-6	Gnd	Blk	7	5
TTL Digital I/O
P2-10	10 kHz Clock out	Blu
P2-9	Data out	Wht
P2-8	Strobe Input (starts meas)	Gry
Analog Outputs
P2-3	Sin	Org
P2-2	Cos	Red
P2-1	Ref	Brn
P2-5	Gnd	Grn
P2-7	Factory Test
DC Power Input
P1-2	"12 Volt" in	Wht	1	Ext P.S.
P1-1	"24 Volt" in	Red	2	Ext P.S.
P1-4	Gnd	Blk