Trace-Data Transfers - HP 8753E Programming And Command Reference Manual

Trace-Data Transfers

Transferring trace-data from the analyzer using an instrument controller
can be divided into three steps:
1. allocating an array to receive and store the data
2. commanding the analyzer to transmit the data
3. accepting the transferred data
Data residing in the analyzer is always stored in pairs for each data
point (to accommodate real/imaginary pairs). Hence, the receiving array
has to be two elements wide, and as deep as the number of points in the
array being transferred. Memory space for the array must be declared
before any data can be transferred from the analyzer to the computer.
As mentioned earlier, the analyzer can transmit data over HP-IB in five
different formats. The type of format affects what kind of data array
is declared (real or integer), because the format determines what type
of data is transferred. Programming examples of data transfers using
different formats are discussed in "Example 3: Measurement Data
Transfer," located in HP BASIC Programming Exampks Guide. For
information on the various types of data that can be obtained (raw
data, error-corrected data, etc.), see "Data Levels," located later in this
document.
For information on transferring trace-data by selected points, see
"Limit Line and Data Point Special Functions," located in HP BASIC
Programming Examples Guide
Note
"Example 7C: Reading ASCII Disk Files to the
Instrument Controller's Disk File," located in HP
BASIC Programming Examples Guide, explains how to
access disk files from a computer.
HP-IB Programrm 'I@ and Command Reference Guide