1 U8480 Series Remote Operation
48 U8480 Series Programming Guide
An example of the programming sequence is shown as follows.
-> SYST:PRES DEF // Presets the U8480 Series. 
-> TRIG:SOUR EXT // Sets the trigger source to external.
-> UNIT:POW DBM // Sets the measurement unit to dBm.
-> CALC:LIM:STAT 1 // Enables the test limit feature.
-> CALC:LIM:LOW 4 // Sets the lower limit to 4 dBm.
-> CALC:LIM:UPP 10 // Sets the upper limit to 10 dBm.
-> CALC:LIM:CLE:AUTO OFF // Disables auto-clearing of the fail counter.
-> CALC:LIM:CLE // Clears the fail counter of any limit failure.
Provides 5 dBm of RF power to the U8480 Series, followed by sending an 
external trigger signal to the U8480 Series.
-> CALC:LIM:FAIL? // Checks for limit failures.
<– 0 // No limit failure, where the measured 
power is within the range of >4 dBm and 
<10 dBm.
-> CALC:LIM:FCO? // Checks the total number of limit failures.
<– 0 // No limit failure has been detected.
Provides 12 dBm of RF power to the U8480 Series, followed by sending an 
external trigger signal to the U8480 Series.
-> CALC:LIM:FAIL? // Checks for limit failures.
<– 1 // Limit failures have been detected, where 
the measured power is 
>10 dBm. Previous limit failures will not 
be cleared.
-> CALC:LIM:FCO? // Checks the total number of limit failures.
<– 1 // One limit failure has been detected.
Provides 8 dBm of RF power to the U8480 Series, followed by sending an 
external trigger signal to the U8480 Series.
-> CALC:LIM:FAIL? // Checks for limit failures.
<– 1 // No limit failure. “1” was caused by the 
previous limit failure.
-> CALC:LIM:FCO? // Checks the total number of limit failures.