LDI DIGISONDE 4D - RSF Format: File Specification

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DIGISONDE-4D
SYSTEM MANUAL
VERSION 1.2.11
5-74 SECTION 5 - SYSTEM SOFTWARE – ANNEX C
Byte #
Description
Units
Range
Type
Format
1 (with Artist)
44
Printer Output, P2
-
0 (none)
1 (b/w)
2 (color)
packed BCD
2 digits
45
Threshold
3 dB over the
MPA
0 - no threshold
1 - MPA - 27 dB
...
9 - MPA - 3 dB
10 - MPA
11 - MPA + 3 dB
12 - MPA + 6 dB
...
packed BCD
2 digits
46
Constant Gain Code
0 (full gain: tracker high,
switch high),
1 ( -9 dB: tracker high,
switch low),
2 (-9 dB: tracker low,
switch high),
3 ( -18 dB: tracker low,
switch low)
packed BCD
2 digits
47-48
Spare
49, 50
CIT Length
msec
0-40000
unsigned int
I5
51
Journal
-
bit0: new gain
bit1: new height
bit2: new freq.
bit3: new case
char
Z4
52, 53
Bottom of the height window, B
1 km
0-9999
packed BCD
4 digits
54, 55
Top of the height window, T
1 km
0-9999
packed BCD
4 digits
56, 57
Number of heights to store, O
units
1-512
packed BCD
4 digits
RSF Format: File Specification
5:154. An RSF ionogram file consists of a variable number of 4 096 byte blocks. Each block contains a
Header and a variable number of Frequency Groups. The RSF Header structure is described in the Table 5C-
38.
Table 5C- 38: The RSF Header
Item
Description
Units
Range
Accuracy
Precision
Type
Format
Record Type
Block identification
-
7 (first block)
6 (all other blocks)
exact
exact
char
(1 byte)
Z2
Header Length
Total number of bytes
taken by Header
-
60, fixed
exact
exact
char
(1 byte)
I2
Version Marker
Version control char
-
FF (hex), fixed
-
-
char
(1 byte)
Z2
General Purpose
PREFACE
See Table 5C- 37