Novatel OM-20000077 Connectors and Connector Pins Assignment, Data Link, Minimum J1 Connections

Chapter 3 Installation

3.3.3Data Link

The data link for differential operation must operate at a minimal rate of 9600 bps.

3.3.4Base Station and Rover Units Separation

The operational range of carrier-phase differential measurements is limited to about 20 km, after which significant accuracy degradation can occur. If your application requires greater separations, your own base station network must be established.

3.4Connectors and Connector Pins Assignment

The receiver has two standard connectors.

•J1 is a 20-pin connector for general input/output interfaces and power input

•J2 is a MCX type RF connector.

The minimum number of connections on J1 required for the system to operate is shown in Table 2.

Table 2: Minimum J1 Connections

Signal Name	J1	Pin #	Description
VCC	2		Primary power (3.3V or 5.0V -0.5 V/+0.25 V)
GND	10, 13,	16 & 18	Ground
TX_No_1	11		Serial port Tx #1
RX_No_1	12		Serial port Rx #1

If DGPS corrections are required for the application, the SUPERSTAR II can receive them on COM2:

Signal Name

RX_No_2

J1 Pin #

15

Description

Serial port Rx #2

If an active antenna is used:

Signal Name

PREAMP

J1 Pin #

1

Description

Power for active antenna (40 mA max)

CAUTION: You should use a current-limiting power source. The maximum current is 40 mA.

See Appendix A, Technical Specifications, starting on Page 44 for more details.

3.4.1 J1 Interface and Power Connector

The SUPERSTAR II connector is a 2mm straight 2x10 pin header:
Suggested supplier:	Samtec
On-Board connector:	TMM-110-03-T-D.

22 SUPERSTAR II User Manual Rev 3