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Row B
GND
Digital Ground
+5V
Input, power supply
*
Reserved for future use
LNA_PWR
Optional external power to antenna other than a standard
NovAtel GPS/GLONASS antenna (jumper plug P301 must be
correctly set)
N/C
N/C
N/C
N/C
CTS1
Clear to Send for COM 1
RTS1
Request to Send for COM 1
DSR1
Data Set Ready for COM 1
N/C
N/C
N/C
N/C
N/C
CTS2
Clear to Send for COM 2
RTS2
Request to Send for COM 2
DSR2
Data Set Ready for COM 2
N/C
VARF Output
Variable-frequency pulse train; normally high, active low. Pulse
width:100 ns - 6.55 ms. Frequency range: 0.15 Hz - 5 MHz.
Normally high, active low, 1 ms ± 50 ns pulse is output at 1 Hz
1PPS Output
(± 50 ns when clock steering on). Falling edge is used as
reference.
Normally high, active low pulse is 1 ms ± 50 ns wide. Falling
Measure
Output
edge is used as the reference. 10 Hz repetition rate.
Mark Input
Normally high, active low input pulse must exceed 55 ns in
duration. The falling edge is the reference. TTL or contact closure
compatible.
STATUS
High level output indicates 'good solution' or valid GPS position.
Low level output indicates 'no solution'.
*
For factory use only
*
For factory use only
\ RESET_IN
Reset TTL signal input from external system; active low.
RESET_OUT
Reset TTL signal output to external system; active high; 140 -
280 ms duration.
*
For factory use only
*
For factory use only
*
Kept high; for factory use only
GPS/GLONASS Receiver User Manual Rev 1
Table B.2 64 Pin I/O Connector Description
Descriptions
B Technical Specifications
Pin
Row A
Descriptions
1
GND
Digital Ground
2
+5V
Input, power supply
3
N/C
4
GND
Digital Ground
5
*
For factory use only
6
*
For factory use only
7
GND
Digital Ground
8
DTR1
Data Terminal Ready for COM 1
9
TXD1
Transmitted Data for COM 1
10
RXD1
Received Data for COM 1
11
DCD1
Data Carrier Detected for COM 1
12
N/C
13
*
For factory use only
14
*
For factory use only
15
GND
Digital Ground
16
DTR2
Data Terminal Ready for COM 2
17
TXD2
Transmitted Data for COM 2
18
RXD2
Received Data for COM 2
19
DCD2
Data Carrier Detected for COM 2
20
N/C
21
GND
Digital Ground
22
GND
Digital Ground
23
GND
Digital Ground
24
GND
Digital Ground
25
GND
Digital Ground
26
GND
Digital Ground
27
GND
Digital Ground
28
GND
Digital Ground
29
GND
Digital Ground
30
GND
Digital Ground
31
GND
Digital Ground
32
GND
Digital Ground
53
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