Tektronix DMM4020 Digital-Multimeter, DMM, VFD-Multiple segment, 20000 counts CAT II 600 V DMM4020-A1 Data Sheet

4-24 

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. 

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. 

Table 4-14 describes the trigger configuration commands, which set and return the trigger 

configuration. 

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.