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10-14
Limit Tests
be 1011. To use one of the other formats, convert the binary number to its decimal, hexadecimal,
or octal equivalent:
Binary 1011 = Decimal 11 = Hexadecimal B = Octal 13
The <NDN> (non-decimal numeric) parameter type is used to send non-decimal values.
These values require a header (#B, #H or #Q) to identify the data format being sent. The letter
in the header can be upper or lower case. The <NRf> (numeric representation format) parameter
type is used to send decimal values and does not use a header.
The following examples show the proper parameter syntax to set an output pattern to 1101
(lines 4, 3 and 1 set HI):
#b1101
Binary format (<NDN> parameter type)
#hD
Hexadecimal format (<NDN> parameter type)
#q15
Octal format (<NDN> parameter type)
13
Decimal format (<NRf> parameter type)
NOTE
When a query command to read a programmed output pattern (i.e.,
CALC2:LIM:UPP:SOUR2?) is sent, the format for the returned value is deter-
mined by the presently selected response message format for output patterns (see
FORMat:SOURce2 command in Table 10-2).
C) FAIL?
In the event of a failure, you can read the measurement event register to determine which limit
(upper or lower) failed. See Section 13 to program and read the measurement event register.
D) DATA?
The INITiate command must be sent to perform the programmed number of measurements.
If the instrument is programmed to perform a finite number of measurements, the :DATA? com-
mand will return all the CALC2 readings after the last reading is taken. The :DATA:LATest?
command will only return the last (latest) CALC2 reading.
If the instrument is programmed to perform an infinite number of measurements (arm count
or trigger count set to infinite), you cannot use the :DATA? command to return CALC2 readings.
However, you can use the :DATA:LATest? command to return the last CALC2 reading after
aborting the measurement process. After sending the INITiate command to start the measure-
ment process, use the ABORt command to abort the measurement process, then use
:DATA:LATest? to return the last CALC2 reading.
Sending :DATA? or :DATA:LATest? without first sending INITiate will return “old” readings,
or cause an error (-220) if limit is not enabled or there are no readings available.
E) ARM:SOURce <name>
Typical “start of test” options:
•
IMMediate — Test starts when LIMIT key is pressed.
•
NSTest — Test starts when component handler pulls the SOT line low.
•
PSTest — Test starts when component handler pulls the SOT line high.
Summary of Contents for 6514
Page 203: ...14 CommonCommands...
Page 207: ...15 SCPISignalOriented MeasurementCommands...
Page 235: ...18 PerformanceVerification...
Page 254: ...19 Calibration...
Page 274: ...20 RoutineMaintenance...
Page 278: ...A Specifications...
Page 282: ...B StatusandErrorMessages...
Page 288: ...C GeneralMeasurement Considerations...
Page 294: ...D DDCEmulationCommands...
Page 299: ...E ExamplePrograms...
Page 306: ...F IEEE 488BusOverview...
Page 320: ...G IEEE 488andSCPI ConformanceInformation...
Page 324: ...H CalibrationOptions...