Transferring Data with IBASIC. Agilent Technologies 8712ES, 8714ET, 8714ES, 8712ET

Trace Data Transfers

Transferring Data with IBASIC

Table 6-3

Number of Trace Points

51

201

401

1601

Transferring Data with IBASIC

If you are using IBASIC, your IBASIC program can avoid the overhead of using OUTPUT and ENTER to transfer trace data, and instead use the analyzer's built-in high-speed subprograms. These built-in subroutines let you quickly move data between the analyzer's measurement arrays and your program's data arrays. For example, to read the analyzer's formatted data array, use the following:

10 DIM Fmt(1:201)

20 INTEGER Chan

30 LOADSUB Read_fdata FROM "XFER:MEM 0,0"

40 Chan=1

50 Read_fdata(Chan,Fmt(*))

Refer to the HP Instrument BASIC User's Handbook for more details.

The table below compares the speed of IBASIC using high-speed transfer subroutines with that of a fast external controller using the SCPI

TRACE:DATA? CH1FDATA query.

High-Speed Trace Transfer Times

Controller Using Binary

TRACE:DATA?

(ms)

21

23

30

82

IBASIC Using

Read_fdata

(ms)

7

10

13

32

6-10 Programmer’s Guide