Using the User Flatness
The
following program interrogates the swept
CW
generator and
Correction Commands,
an
HP 437B
power meter for frequency and power information
Example Program 8
respectively.
The swept CW
generator is programmed to sweep from
2 to 20
with frequency-correction pairs every 100 MHz and
leveled output power. For this example, we assume that the
path losses do not exceed 5
and that the HP 437B power meter
already has its power sensor’s calibration factors stored in sensor
data table 0. If another power meter is used, the power sensor’s
calibration factors will have to be stored in a look-up table. Modify
the program ‘co suit your particular measurement requirements. Up
to 801 points may be entered in the user flatness correction table
with this program.
SCPI
commands are used to set up the source parameters and enter
correction frequencies and data into the correction table.
10
20
30
40
50
60
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80
90
100
110
120
130
140
150
160
170
180
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200
210
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THE ADDRESS TO THE SOURCE AND POWER METER
DIM
ASSIGN @Source TO 719
ASSIGN
TO 713
INTEGER Error-flag
ABORT 7
I
!SET UP SOURCE
OUTPUT
OUTPUT
SWE;STAR 2 GHZ;STOP 20
OUTPUT
200 MS"
OUTPUT
5 DBM;:INIT:CONT
OUTPUT
ENTER QSource;Done
!SET UP POWER METER
OUTPUT
OUTPUT
OUTPUT
POWER METER
OUTPUT
IF Error-flag THEN
BEEP
CLEAR SCREEN
PRINT
DID NOT COMPLETE ZEROING OPERATION!"
ELSE
I
!SET UP CORRECTION FREQUENCIES IN USER FLATNESS CORRECTION TABLE
Increment=1
Getting Started Programming
103
