IO Connection

The IO connection is used to provide the power and access to a range of interface connections. It can be achieved with an IO Unterminated Cable, an IO Breakout Cable, or a Rugged Evaluation Kit USB Cable. The evaluation kit USB Cable is supplied as a part of the Certus Mini Evaluation Kit.

Advanced Navigation produces tested cable assemblies as either a USB cable, breakout cable, or a 3 metre unterminated cable. Cable assemblies are shielded TPE cable, with each individual wire colour-coded FEP coated 28 AWG wire (for the 12 pin cable).

Rugged Evaluation Kit USB Cable

The evaluation kit is supplied with a 2 metre cable with a Certus Mini push-pull plug on one end and an overmoulded RS232 to USB converter on the other end. The cable is the same 12 wire cable supplied with the IO unterminated cables, and all 12 wires are connected on the push-pull connector end. If required, it is possible to cut off the overmoulded RS232 converter to get access to all the individual wires. The chip used in the overmoulded RS232 converter is an FTDI FT232R and supports baud rates of up to 2,000,000 baud.

IO Unterminated Cable

Optional 12-pin unterminated 3 m cables are available for custom connections. Each individual wire in the unterminated cable is a colour-coded FEP coated wire. See Pin Allocation Table for details on pin out functions. Custom cable lengths for unterminated types are available subject to minimum order quantities and lead times; contact the Sales team for more information.

Pin	Colour	Function
1	Black	Ground
2	Red	Power
3	Blue	GPIO 1
4	Brown	GPIO 2
5	Violet	Primary RS422 Tx+ / RS232 Tx (software selectable)
6	Violet / Black Stripe	Primary RS422 Tx-
7	Yellow	Primary RS422 Rx+ / RS232 Rx (software selectable)
8	Yellow / Black Stripe	Primary RS422 Rx-
9	Light Blue	Auxiliary RS232 Tx
10	Light Green	Auxiliary Rs232 Rx
11	Light Brown / Black Stripe	CAN High
12	Light Brown	CAN Low
Housing		Cable Braided Shield

Pin Allocation Table

IO Breakout Cable

Advanced Navigation offers a 2 m, 12-pin breakout cable, along with a 1 m FTDI USB to RS232 / RS422 (selectable) cable. Custom cable lengths are not available for pre-terminated cables.

The IO breakout cable comprises of one DC barrel plug for power, and four DB9 connectors that allow connecting to:

• Primary RS232/RS422

• Auxiliary RS232

• CAN

• GPIO

Given below are details of the IO breakout cable connections.

Pin	Function	Primary	Auxiliary	CAN	GPIO	Power
1	Ground	5	5	6	5	Ring
2	Power Supply					Tip
3	GPIO1				2
4	GPIO2				3
5	RS422-TX(+)/RS232-TX PRI	2
6	RS422-TX(-) PRI	8
7	RS422-RX(+)/RS232-RX PRI	3
8	RS422-RX(-) PRI	7
9	RS422-TX(+)/RS232-TX AUX		2
10	RS422-RX(+)/RS232-RX AUX		3
11	CAN H			7
12	CAN L			2

IO Breakout Cable Connector Pin-out