GW Instek GDS-1102B - Page 37

COMMAND DETAILS
37
Format:
Header: The header (in ASCII)
encodes the number of bytes for the
header followed by the number of
data points in bytes for the raw data.
#42000
Header identifier
Indicates the number
of characters that will
encode the number of
data points (ie. 2000
= 4 characters) after
which the raw data
will follow.
Indicates the number
of bytes that follow
(for the raw data).
ASCII
Raw Data:
Each two bytes (in hex) encodes the
vertical data of a data point. The data
is signed hex data (2’s complement, -
32768 ~ 32767).
Waveform Raw Data Example:
Header raw data……….
Hex:
23 34 32 30 30 30 00 1C 00 1B 00 1A 00
1A 00 1B ………..
ASCII/Decimal:
#42000 28 27 26 26 27…….
The actual value of a data point can be
calculated with the following formula:
(Decimal value of hex data/AD
Factor) * vertical scale.
Note: AD Factor is fixed as 25. The
vertical scale is returned with the