202 G12 OEM Board & Sensor Reference Manual
Table A.1. shows the connector pin configuration differences between the G12
and Sensor II.
Table A.1. G12 and Sensor II Connector Pin Configurations
Pin Sensor II G12
1 GND Ground for serial port A GND Ground for serial port A
2 CTSA RS-232 port A clear to send CTSA RS-232 port A clear to send
3 TXDA RS-232 port A transmit data TXDA RS-232 port A transmit data
4 RTSA RS-232 port A request to send RXSA RS-232 port A request to send
5 RXDA RS-232 port A receive data RXDA RS-232 port A receive data
6 Ashtech internal use only (leave floating) Ashtech internal use only (leave floating)
7 GND Ground for serial port B Ground for serial port B
8 CTSB RS-232 port B clear to send CTSB RS-232 serial port B clear to send
9 TXDB RS-232 port B transmit data TXDB RS-232 port B transmit data
10 RTSB RS-232 port B request to send RTSB RS-232 port B request to send
11 RXDB RS-232 port B receive data RXDB RS-232 port B receive data
12 Ashtech internal use only (leave floating) Ashtech internal use only (leave floating)
13 +5VDC input +5 VDC input
14 +5VDC input +5 VDC input
15 BATT_IN 3-3½-volt battery backup for
memory
BATT_IN 2.5-3.5 volt battery backup for
memory and real-time clock
16 Ashtech internal use only (leave floating) Ashtech internal use only (leave floating)
17 MAN_RES* Connect to ground for
manual hardware reset
MAN_RES* Connect to ground for manual
hardware reset
18 1PPS_OUT 1 pps TTL output
synchronized to GPS time
1PPS_OUT 1 pps TTL output synchronized
to GPS time
19 GND Sensor II-S chassis common
ground
GND G12 chassis common ground
20 GND Sensor II-S chassis common
ground
GND G12 chassis common ground
21 LED_RED External LED control
22 LED_GRN External LED control
23 MSTR_OUT Measurement strobe output
24 G12 chassis common ground
25 VARF_OUT Variable frequency output
G12RevD.book Page 202 Tuesday, April 2, 2002 4:33 PM
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