GW Instek GDS-800 Series Programming Manual - Manual (Page 28)

GDS-806/810/820/840 Programming Manual
27
:ACQuire:POINt (query only)
Transfer the displayed waveform data (always 500 points data totally) from the
oscilloscope. Each point is composed by two bytes (the integer value of 16 bits).
The high byte (MSD) will be prior transferred.
Syntax
:ACQuire:POINt
Arguments
→Specify the channel number (1|2)
Returns
The string of data is following.
# Data size digit Data size Horizontal
scale
Channel indicator Waveform data size Waveform data
#: Begin a transmission of data string.
Data size digit: Indicate the digits of following data string amount (1 digit).
Data size: the amount of current data string (4 digits).
Horizontal scale: The corresponding Horizontal scale of received waveform data (4
bytes). The Horizontal scale is indicated by floating point format which compatible
with IEEE 754 standards.
Channel indicator: Show the channel which sent the waveform data.
Waveform data size: The total amounts indicator of waveform data (4 bytes).
Waveform data: The effective waveform data which covers 500 points (1000 bytes)
totally
Example
Transfer the waveform data of channel 1 at 250μs per division:
:ACQuire1:POINt , the oscilloscope will return the following messages: