Agilent Technologies 8360B, Руководство пользователя, Страница: 131 / 496

Using the User Flatness
Correction Commands,
Example Program 8
The following program in terrogates the sw ept signal generator and an
HP/Agilent 437B p o w er meter for frequency and p o w er information
resp ectiv ely . The sw ept signal generator is programmed to sw eep
from 2 to 20 GHz, with frequency-correction pairs ev ery 100 MHz
and +5 dBm lev eled output p o w er. F or this example, w e assume
that the path losses do not exceed 5 dBm and that the HP/Agilent
437B p o w er meter already has its p o w er sensor's calibration factors
stored in sensor data table 0. If another p o w er meter is used, the
p o w er sensor's calibration factors will ha v e to b e stored in a lo ok-up
table. Mo dify the program to suit y our particular measuremen t
requiremen ts. Up to 801 p oints may b e en tered in the user atness
correction table with this program.
SCPI commands are used to set up the source parameters and en ter
correction frequencies and data in to the correction table.
10 !ASSIGN THE ADDRESS TO THE SOURCE AND POWER METER
20 DIM A$[5000],B$[5000]
30 ASSIGN @Source TO 719
40 ASSIGN @Meter TO 713
50 INTEGER Error_flag
60 ABORT 7
70 !
80 !SET UP SOURCE
90 OUTPUT @Source;"*RST"
100 OUTPUT @Source;"FREQ:MODE SWE;STAR 2 GHZ;STOP 20 GHZ"
110 OUTPUT @Source;"SWEEP:TIME 200 MS"
120 OUTPUT @Source;"POW:LEV 5 DBM;:INIT:CONT ON"
130 OUTPUT @Source;"*OPC?"
140 ENTER @Source;Done
150 !
160 !SET UP POWER METER
170 OUTPUT @Meter;"PR"
180 OUTPUT @Meter;"FA"
190 OUTPUT @Meter;"TR0"
200 !
210 !ZERO POWER METER
220 OUTPUT @Source;"POW:STAT OFF"
230 Zero_meter(@Meter,@Source,Error_flag)
240 IF Error_flag THEN
250 BEEP
260 CLEAR SCREEN
270 PRINT "ERROR:METER DID NOT COMPLETE ZEROING OPERATION!"
280 ELSE
290 !
300 !SET UP CORRECTION FREQUENCIES IN USER FLATNESS CORRECTION TABLE
310 !OUTPUT @Source;"CORR:FLAT ";
320 Start_freq=2
330 Stop_freq=20
340 Increment=1
350 N=(((Stop_freq-Start_freq)/Inc1)
Getting Started Programming 1-103