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3 Data Logs
44 MiLLennium GPSCard SW Version 4.503/4.52 Command Descriptions Manual Rev 2
Figure 3-1 Pass-Through Log Data
When pass-through logs are being used, the GPSCard’s command interpreter continues to monitor the port for valid
input commands and replies with error messages when the data is not recognized as such. If you do not want the
pass-through input port to respond with error messages during unrecognized data input, see the MESSAGES
command, Appendix C, Page 110 for details on how to inhibit the port’s error message responses. As well, if you
do not want the reference station to accept any input from the remote device, use the ACCEPT NONE command
to disable the port’s command interpreter.
3.8.1 Command Syntax
Syntax:
Example 1:
log com2 com1a onchanged
3.8.2 ASCII Log Structure
log to-port from-port-A/B trigger
Syntax Range Value Description Default
log — Log command unlogall
to-port COM1, COM2 Port that will output the pass-through log data —
from-port-[A/B] COM1A/B, COM2A/B Port that will accept input data;
[A] option logs data as ASCII,
[B] option logs data with binary header
—
trigger onchanged or onnew log will output upon receipt of:
<CR>, <LF>, 80 characters, or 1/2 sec. timeout
—
$port ID week seconds pass-through data *xx [CR][LF]
Field # Field type Data Description Example
1 $port ID Log header:
Identifies port accepting input data
$COM1
2 week GPS week number 747
3 seconds GPS seconds into the week at time of log 347131.23
4 pass-through data Data accepted into COM1
(up to 80 characters)
$TM1A,747,347131.000000000,
0.000000058,0.000000024,
-9.000000009,0*78<CR>
5 *xx Checksum *2E
6 [CR][LF] Sentence terminator [CR][LF]
Serial Cable
Host PC
(Reference Station)
fix position (lat,lon,ht,id)
accept com1 none
log com1 pvaa ontime 5
messages com1 off
log console com1a onchanged
Host PC
(Rover Station)
To COM1
$
P
V
A
A
d
a
t
a
l
o
g
To COM1
Data Link
Serial Cable
To COM2
To COM2