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^JT

Head Test Interval

Description: The ^JT command lets you change the printhead test interval from 100

to any desired interval. The ^JT command allows the printer to run the test after

printing a label. When a parameter is defined, the printer will run the test after

printing a set amount of labels.

The printer’s default head test state is off. Parameters for running the printhead test

are defined by the user.

Format: ^JT#,a,b,c

Parameters:

# = four-digit number of labels to be printed between head tests

Accepted Values: 0000 to 9999. If a value greater than 9999 is entered,

it will be ignored.

Default Value: 0000 (off)

a = manually select range of elements to test

Accepted Values: Y (yes) or N (no)

Initial Value at Power-up: N

b = first element to check when parameter

Accepted Values: 0 to 9999

Initial Value at Power-up:0

c = last element to check when parameter

Accepted Values: 0 to 9999

Initial Value at Power-up:9999

Comments: The ^JT command supports testing a range of print elements. The

printer automatically selects the test range by tracking which elements have been

used since the previous test.

^JT will also turn the automatic mode to specify the first and last elements for the

head test. This makes it possible to select any specific area of the label or the entire

print width.

If the last element selected is greater than the print width selected, the test stops at

the selected print width.

Whenever the head test command is received, a head test is performed on the next

label unless the count is set to zero.

ZPL II Programming Guide Volume One: Command Reference for X.10

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Zebra II Spécifications Page 191