Agilent Technologies 54503A User's Guide download pdf (Page 307)

100

101

Chapter 5 307

Programming

Data Transfer to Computer

Line 10 dimensions array A to 601 elements (one element for each

point of trace data). The array is dimensioned using the REAL

statement, allowing each array element to accept real-number data.

Line 20 sets the analyzer to a desired state.

Line 30 calls the subprogram that queries the spectrum analyzer for

the required state data.

Line 40 speciﬁes P-format (TDF P), then queries the analyzer for data

in trace A (TRA?).

Line 50 enters the data into the array.

Example 4 illustrates how to return data from a computer to the

spectrum analyzer.

XAMPLE 4

10 REAL A(1:601)

20 OUTPUT 718;"IP;CF 300MHZ;SP 20MHZ;SNGLS;TS;"

30 CALL Get_settings(Fa,Fb,Rl,Rb,Vb,St,Lg,Aunits$)

40 OUTPUT 718;"TDF P;TRA?"

50 ENTER 718;A(*)

60 PRINT "PRESS CONTINUE TO RETURN DATA TO THE ANALYZER"

70 PAUSE

80 OUTPUT 718;"IP;TDF P;VIEW TRA;"

90 CALL Setup_analyzer(Fa,Fb,Rl,Rb,Vb,St,Lg,Aunits$)

100 OUTPUT 718;"TRA ";

110 FOR I=1 TO 600

120 OUTPUT 718;A(I);"DBM,";

130 NEXT I

140 OUTPUT 718;A(601);"DBM;"

150 END

Lines 10 to 50 are the same as in Example 3.

Line 80 begins to send trace data by presetting the analyzer, preparing

the spectrum analyzer to accept data into trace A, and selecting the

P-format.

Line 90 sets the analyzer to the stored trace conditions per the

subroutine in Example 2.

Lines 100 to 140 enter the stored trace data into trace A. When

sending trace data into the analyzer using P-format, the data points

must be entered into the analyzer one point at a time. Note that in line

120, each data point value of the trace array is followed by the

amplitude units (in this case, dBm).

See Table 5-2 on page 315 for an example of how data is sent to the

computer using the TDF P format.

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