Tektronix TLS 216 Waveform Data/Record Lengths, Waveform Data Locations and Memory Allocation, Waveform Preamble

Command Groups

TLS 216 Programmer Manual 2–37

The defined binary formats also specify the order in which the bytes are

transferred. The four binary formats are RIBinary, RPBinary, SRIbinary, and

SRPbinary.

RIBinary is signed integer where the most significant byte is transferred first,

and RPBinary is positive integer where the most significant byte is transferred

first. SRIbinary and SRPbinary correspond to RIBinary and RPBinary respec-

tively but use a swapped byte order where the least significant byte is transferred

first. The byte order is ignored when DATa:WIDth is set to 1.

You can transfer multiple points for each waveform record. You can transfer a

portion of the waveform or you can transfer the entire record. The DATa:STARt

and DATa:STOP commands let you specify the first and last data points of the

waveform record.

When transferring data into the logic scope, you must specify the location of the

first data point within the waveform record. For example, when you set

DATa:STARt to 1, data points will be stored starting with the first point in the

record, and when you set DATa:STARt to 500, data will be stored starting at the

500th point in the record. The logic scope will ignore DATa:STOP when reading

in data as it will stop reading data when it has no more data to read or when it

has reached the specified record length.

When transferring data from the logic scope, you must specify the first and last

data points in the waveform record. Setting DATa:STARt to 1 and DATa:STOP

to the record length will always return the entire waveform. You can also use the

vertical bar cursors to delimit the portion of the waveform that you want to

transfer. DATa:STARt and DATa:STOP can then be set to the current cursor

positions by sending the command DATa SNAp.

The DATa:SOUrce command specifies the data location when transferring

waveforms from the logic scope. You can transfer out multiple waveforms at one

time by specifying more than one source.

You may transfer waveforms one at a time into the logic scope. Waveforms sent

to the logic scope are always stored in one of the 16 reference memory locations.

You can specify the reference memory location with the DATa:DESTination

command. You must define the memory size for the specified location before

you store the data. The ALLOcate: WAVEFORM:REF<x> command lets you

specify the memory size for each reference location. Waveforms must be selected

for display to be transferred.

Each waveform that you transfer has an associated waveform preamble that

contains information such as the horizontal scale, the vertical scale, and other

settings in place when the waveform was created. Refer to the WFMPre

Waveform Data/RecordLengthsWaveform Data Locationsand Memory AllocationWaveform Preamble