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8808A
Users Manual
4-24
Compare Commands and Queries
Table 4-13 describes the compare commands and queries. These commands cause the
Meter to determine whether a measurement is higher than, lower than, or within a
specified range. These commands correspond with C, U and V on the front
panel.
Table 4-13. Compare Commands and Queries
Command Description
COMP Meter enters compare (COMP) function. Touch Hold is automatically turned
on. (Touch Hold can be turned off with HOLDCLR command.)
COMP? Meter returns Hl if the last COMP measurement reading was above the upper
limit of the compare range; LO if it was below the lower limit of the compare
range; PASS if within compare range; or a dash (—) if a measurement has
not completed.
COMPCLR Meter exits compare function (and Touch Hold if it is selected) and restores
display to normal operation.
COMPHI <high value> Sets HI compare (COMP) value to <high value>.
<high value> can be a signed integer, signed real number without exponent,
or signed real number with exponent.
COMPLO <low value> Sets LO compare (COMP) value to <low value>.
<low value> can be a signed integer, signed real number without exponent, or
signed real number with exponent.
HOLDCLR Meter exits Touch Hold and restores display to normal operation, but does not
exit the compare function.
Trigger Configuration Commands
Table 4-14 describes the trigger configuration commands, which set and return the trigger
configuration.
Table 4-14. Trigger Configuration Commands
Command Description
TRIGGER <type> Sets the trigger configuration to <type> where <type> is the number in the
Type column of Table 4-3 that corresponds with the applicable trigger, rear
trigger and setting delay. If the <type> entered is not between 1 and 5, an
Execution Error is generated.
Select a trigger type with settling delay enabled (trigger type 3 or 5) when the
input signal is not stable before a measurement is triggered. Typical settling
delays are provided in Table 4-3.
TRIGGER? Returns the trigger type set by the TRIGGER command.
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