File Header Format - Pentek Talon RTX 2767 Operating Manual

Page 46
7.3

File Header Format

Table 7−1
the fields in the header.
Field
Offset
0x0 Model Number
0x4 File Name
0x104 File Size (in MSs)
0x108 File Size (in secs)
0x10C Time Stamp
0x12C Reserved
0x22C Buffer Size
0x230 Data Rate (in MS/s)
0x234 Data Loss
Data Offset (in
0x238
bytes)
0x23C Data Type
0x240 Packing Mode
0x244 Rate Divider
0x248 Input Voltage Level
Sampling Rate (in
0x24C
MHz)
Tuning Frequency
0x250
(in MHz)
0x254 Decimation
0x258 Reserved
0x25C Reserved
0x260 Board Number
0x264 Reserved
0x268 Reserved
0x26C Reserved
0x270 Reserved
0x274 Channel Number
0x278 Reserved
0x27C Reserved
Last Good Data
0x280
Location
0x288 ADC Resolution
Rev.: 1.0
below shows the format of the file header, with a brief description of each of
Table 7−1: Talon File Header Format
Data
Type
int_32
char[256]
int_32
float_32
char[32]
char[256]
int_32
float_32
int_32
int_32
int_32
int_32
int_32
int_32
float_32
float_32
int_32
int_32
int_32
int_32
int_32
int_32
int_32
int_32
int_32
int_32
int_32
int_64
int_32
Talon RTX 2767 Operating Manual
Description
The Talon model number (0x27670000 for Model 2767).
The name of the recorded file.
The size of the file in MSs (not including the header). The
total amount of data written in the recording.
The length of the recording, in seconds.
The recording time stamp. See Time Stamp Field on
48.
Factory Reserved.
The buffer size used by the recorder, in bytes.
The calculated data rate of the recording in megasamples
(millions of samples) per second.
Data loss indicator. 0 = no data lost. 1 = data lost.
The offset into the file where the recorded data resides −
for legacy use only.
0 = Raw A/D samples. 1 = DDC Complex I/Q data.
Packing Mode. 1 = 8−bit packed data, 2 = 16−bit packed
data, 3 = 32−bit packed data.
For baseband recordings only, the rate divider applied to
the sample clock.
The full scale input voltage level: 2 = 8 dBm.
The sampling rate of the A/D converter, in MHz.
For IF recordings only, the tuning frequency of the DDC, in
MHz.
For IF recordings only, the decimation of the DDC.
Factory Reserved.
Factory Reserved.
Board Model 786510 = 0x78651000.
Factory Reserved.
Factory Reserved.
Factory Reserved.
Factory Reserved.
The channel number in the system.
Factory Reserved.
Factory Reserved.
If data loss occurs, this field represents the amount of
good data available prior to any real−time data loss.
The number of bits of resolution in the A/D converter.
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