HP 8590 E & L Series Spectrum Analyzers and HP 8591C Cable TV ...

Program Example for the RS-232 Interface
10 'File = 232PROG6
20 OPEN "COMl:9600,N,8,1" AS #l
30 'create a 401-point trace array
40 DIM TRCA(401)
50 PRINT #l,"IP;"
60 'set output format of spectrum analyzer for real numbers
70 PRINT #l,"TDF P;"
80 'set spectrum analyzer parameters
90 PRINT #l "SNGLS."
100 PRINT #;,"CF 3;OMZ;"
110 PRINT tl,"SP 200MZ;"
120 PRINT #1 "TS."
130 PRINT #l:"MKPK;"
140 'move peak to center of spectrum analyzer screen
150 PRINT #1 "MKCF."
160 PRINT #l:"TS;"'
170 'ask spectrum analyzer for trace data
180 PRINT #1 "TRA'."
190 'input the t&e data to the BASIC program
200 FOR I=1 TO 401
210 INPUT #l,TRCA(I) 'data input in dBm
220 NEXT I
230 'create file to store trace on disk
240 OPEN "TRACEA" FOR OUTPUT AS #2
250 'print the trace data to the disk
260 FOR I=1 TO 401
270 PRINT #2,TRCA(I)
280 NEXT I
290 'put spectrum analyzer into continuous-sweep mode
300 PRINT tl , "CONTS." ,
310 END
Using the OPEN command, we create an empty file on the disk for storing the trace and assign
an input and an output path to the file TRACEA. Then we send the trace data to the file. (See
lines 260 through 280.)
Lines 20 through 220 of 232PROG6 are identical to the previous program, 232PROG5.
Programming Topics 3-5