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48
GSR1700 CSX Operations Manual
Chapter 6
Collecting Data
A conflict between an auto-generated file name and an existing
file name is unlikely. However, if a conflict occurs, the receiver
resolves it by creating a file name as follows: the first character is
a tilde (~), followed by a seven-digit random number and a .pdc
extension (for example,
~9368412.pdc
).
6.1.2
Data storage capacity
Table 25 indicates the approximate number of hours of data that
can be logged to memory for several recording intervals, based
on a 64 MB memory card.
%
Session ID assigned in sequence
(0,…,9 and A,…,Z) based on the
presence of files previously logged on
a particular day
15th session
created that day
is
E
Sample generated file name:
1234025E.pdc
NOTE
✉
Instead of using the auto-generated file name, you can specify the file
name using SDR+ software.
Table 24: Auto-generated file name convention
(continued)
Part of file name
Description
Example
Table 25: Hours of storage
a
a. Based on 64 MB memory card.
Epoch
rate
Average number of satellites
6
7
8
9
10
11
12
1
96
85
76
69
63
58
54
5
444
396
358
326
299
277
257
10
807
727
661
607
560
520
486
15
1110
1008
923
851
789
736
690
30
1777
1641
1525
1424
1336
1258
1188
60
2538
2392
2263
2146
2041
1946
1860
GSR1700 CSX Operations Manual (OM-1700CSX Rev 2, 750-1-0077).book Page 48 Wednesday, December 3, 2008 2:32 PM