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Power Meter Remote Operation
Setting Measurement Limits
Figure 1-6: Limits Checking Results
Amplitude
+10 dBm
o
o
+4 dBm
In this application a swept frequency signal is applied to the input of the
Device Under Test. The power meter measures the output power. The
limits have been set at +4 dBm and +10 dBm. A fail occurs each time the
output power is outside these limits. Use the SENSe subsystem to
configure the power meter for limits checking. The following example
program, in HP Basic, shows how to set the limits to +4 dBm and
+10 dBm.
10 !Create I/O path name
20 ASSIGN @Power to 713
30 !Clear the Power Meter's Interface
40 CLEAR @Power
50 !Set the Power Meter to a known state
60 OUTPUT @Power;"*RST"
70 !Set the measurement units to dBm
80 OUTPUT @Power;"UNIT:POWer DBM"
90 !Set the upper limit to 10 dBm
100 OUTPUT @Power;"SENSe:LIMit:UPPer 10"
110 !Set the lower limit to 4 dBm
120 OUTPUT @Power;"SENSe:LIMit:LOWer 4"
130 !Switch the limit checking on
140 OUTPUT @Power;"SENSe:LIMit:STATe ON"
150 !Check the limits
160 OUTPUT @Power;"SENSe:LIMit:UPPer?"
170 ENTER @Power;A
180 OUTPUT @Power;"SENSe:LIMit:LOWer?"
1-54
Fail
o
o
o
o
o
Fail
Frequency
HP E4418B/E4419B Programming Guide
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