Fluke 8808A User Manual - Page 83

Measurement Queries

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4 Operating the Meter Using the Computer Interface Computer Interface Command Set Measurement Queries Table 4-12 describes measurement queries, which are shown on the primary and/or secondary displays. Command MEAS1? MEAS2? MEAS? VAL1? VAL2? VAL? Table 4-12. Measurement Queries Description Meter returns the value shown on the primary display after the next triggered measurement is completed. Meter returns the value shown on the secondary display after the next triggered measurement is completed. If the secondary display is off, an Execution Error is generated. If both displays are on, Meter returns the value shown on both displays after the next triggered measurement is completed in the format selected. (See FORMAT command in Table 4-15.) Refer to the following examples for each format: Example of Format 1: +1.2345E+0,+6.7890E+3 Example of Format 2: +1.2345E+0 VDC, +6.7890E+3 ADC If the secondary display is not on, MEAS? is equivalent to MEAS1? Note: If MEAS is used in external trigger (TRIGGER 2 through TRIGGER 5), unexpected results will be obtained. Meter returns the value shown on the primary display. If the primary display is blank, the next triggered measurement is returned. Meter returns the value shown on the secondary display. If the secondary display is blank, the next triggered measurement is returned. If the secondary display is off, an Execution Error is generated. If both displays are on, Meter returns the value shown on both displays in the format selected. (See FORMAT command in Table 4-15.) Refer to the following examples for each format: Example of Format 1: +1.2345E+0,+6.7890E+3 Example of Format 2: +1.2345E+0 VDC, +6.7890E+3 ADC If the secondary display is not on, VAL is equivalent to VAL1. If a display is blank, the next triggered measurement on that display (or displays) is returned. 4-23

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Operating the Meter Using the Computer Interface
Computer Interface Command Set
4
4-23
Measurement Queries
Table 4-12 describes measurement queries, which are shown on the primary and/or
secondary displays.
Table 4-12. Measurement Queries
Command
Description
MEAS1?
Meter returns the value shown on the primary display after the next triggered
measurement is completed.
MEAS2?
Meter returns the value shown on the secondary display after the next
triggered measurement is completed. If the secondary display is off, an
Execution Error is generated.
MEAS?
If both displays are on, Meter returns the value shown on both displays after
the next triggered measurement is completed in the format selected. (See
FORMAT command in Table 4-15.) Refer to the following examples for each
format:
Example of Format 1: +1.2345E+0,+6.7890E+3<CR><LF>
Example of Format 2: +1.2345E+0 VDC, +6.7890E+3 ADC<CR><LF>
If the secondary display is not on, MEAS? is equivalent to MEAS1?
Note: If MEAS is used in external trigger (TRIGGER 2 through TRIGGER 5),
unexpected results will be obtained.
VAL1?
Meter returns the value shown on the primary display. If the primary display is
blank, the next triggered measurement is returned.
VAL2?
Meter returns the value shown on the secondary display. If the secondary
display is blank, the next triggered measurement is returned. If the secondary
display is off, an Execution Error is generated.
VAL?
If both displays are on, Meter returns the value shown on both displays in the
format selected. (See FORMAT command in Table 4-15.) Refer to the
following examples for each format:
Example of Format 1: +1.2345E+0,+6.7890E+3<CR><LF>
Example of Format 2: +1.2345E+0 VDC, +6.7890E+3 ADC<CR><LF>
If the secondary display is not on, VAL is equivalent to VAL1. If a display is
blank, the next triggered measurement on that display (or displays) is
returned.