Tektronix WCA200A, Руководство пользователя

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File Format
3- 256
WCA230A & WCA280A User Manual
short reserved1. Internal use only.
short validA, validP, validI, validQ. These parameters indicate whether data of
amplitude, phase, I or Q (value converted into a two-byte signed integer) is
written.
H
0.
Indicates that data is not written in the file.
H
--1. Indicates that data is written in the file.
There are seven combinations as listed in Table 3--34.
Table 3- 34:
Combinations of validA, P, I and Q
validA validP validI validQ
0 0 0 0
--1 0 0 0
0 --1 0 0
--1 --1 0 0
0 0 --1 0
0 0 0 --1
0 0 --1 --1
short bins. Shows the number of bins. It is the same as Bins in the file header.
short reserved2. Internal use only.
short triggered. Indicates whether the frame is before or after the trigger.
H
0.
Indicates that the frame is before the trigger (pre-trigger).
H
--1. Indicates that the frame is after the trigger (post-trigger).
short overLoad.
Indicates whether an input overload occurred.
H
0. Indicates that the MaxInputLevel value in the file header was correct.
H
--1. Indicates that the MaxInputLevel value in the file header was too low.
short lastFrame. The analyzer can divide its memory into (100 frames)
×
(40 blocks), for example. LastFrame indicates the last frame in a block.
H
0. Indicates that the frame is not the last in the block.
H
--1. Indicates that the frame is the last in the block.
unsigned long ticks. Shows a time stamp using UnitPeriod in the file header
(not FramePeriod) as a unit time.