6. Header of Acquisition Frame
Acquisition header has 54 bytes, described in details with the following table:
Byte No Name
Register
address
Value
range
Description
1
Start of Frame
---
'@' (0x40)
Beginning character of frame/header ASCII „@”
2
FrameIdx
0x06
[7:0]
Actual value of frame counter – 16-bit counter with
automatic reset at overflow
3
[15:8]
4
TimeStamp
0x18
[7:0]
Register TimeStamp – value of TIMER register captured
on trigger event
5
[15:8]
6
TriggerOverrun
0x12
[7:0]
Register TriggerOverrun – amount of lost triggers since
last acquisition (16-bit counter)
7
[15:8]
8
TriggerOverrunSource
0x0A
[3:0]
Flags of lost triggers sources since last acquisition
9
GPI Captured
[5:0]
State of GPI[5:0] captured on trigger event
10
Encoder 1 Position
0x6E
[7:0]
Encoder 1 position captured on trigger event
11
[15:8]
12
0x70
[23:16]
13
[31:24]
14
Encoder 2 Position
0x7A
[7:0]
Encoder 2 position captured on trigger event
15
[15:8]
16
0x7C
[23:16]
17
[31:24]
18
Peak Detectors Status
0x2A
[7:0]
PeakDetectors control/status register
19
(0x00)
- reserved
20
PDA RefPos
0x36
[7:0]
PDA gate – reference level crossing position
21
[15:8]
- useful bits [17:0]
22
0x38
[23:16]
23
(0x00)
- reserved
24
PDA MaxVal
0x3A
[7:0]
PDA gate – maximum value of signal in the gate
25
(0x00)
- reserved
26
PDA MaxPos
0x3C
[7:0]
PDA gate – position of maximum value
27
[15:8]
- useful bits [17:0]
28
0x3E
[23:16]
29
(0x00)
- reserved
30
PDB RefPos
0x4A
[7:0]
PDB gate – reference level crossing position
31
[15:8]
- useful bits [17:0]
32
0x4C
[23:16]
33
(0x00)
- reserved
34
PDB MaxVal
0x4E
[7:0]
PDB gate – maximum value of signal in the gate
35
(0x00)
- reserved
36
PDB MaxPos
0x50
[7:0]
PDB gate – position of maximum value
37
[15:8]
- useful [17:0]
38
0x52
[17:16]
39
(0x00)
- reserved
40
PDC RefPos
0x5E
[7:0]
PDC gate – reference level crossing position
41
[15:8]
- useful bits [17:0]
42
0x60
[17:16]
43
(0x00)
- reserved
44
PDC MaxVal
0x62
[7:0]
PDC gate – maximum value of signal in the gate
45
(0x00)
- reserved
46
PDC MaxPos
0x64
[7:0]
PDC gate – position of maximum value
47
[15:8]
- useful bits [17:0]
48
0x66
[17:16]
49
(0x00)
- reserved
50
DataCount
0x24
[7:0]
Amount of measurement data (parameter DEPTH)
51
[15:8]
- useful bits [17:0]
52
0x26
[17:16]
53
(0x00)
- reserved
54
End of Header
---
'/' (0x2F)
Header end character – ASCII „/”
55
Sample 1
[7:0]
First measurement sample
56
Sample 2
[7:0]
Second measurement sample
[...]
54+
(Cnt-1)
Sample [DataCount-1]
[7:0]
54+Cnt
Sample [DataCount]
[7:0]
Last measurement sample
