1-112
Making Measurements
Using Test Sequencing
TTL Out Menu The softkey provides access to the TTL out menu. This menu
allows you to choose between the following output parameters of the TTL output signal:
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The TTL output signals are sent to the sequencing BNC rear panel output.
Sequencing Special Functions Menu
This menu is accessed by pressing the softkey in the Sequencing
menu. This menu provides access to the decision making menu and the more special
functions menu. It also contains the peripheral GPIB address and titling, wait x, pause,
and marker → CW functions.
Sequence Decision Making Menu
This menu is accessed by pressing the softkey in the Sequencing
Special Functions menu.
Decision making functions are explained in more detail in the following section. These
functions check a condition and jump to a specified sequence if the condition is true. The
sequence called must be in memory. A sequence call is a one-way jump. A sequence can
jump to itself, or to any of the other five sequences currently in memory. Use of these
features is explained under the specific softkey descriptions.
Decision Making Functions
Decision making functions jump to a softkey location, not to a specific sequence
title Limit test, loop counter, and do sequence commands jump to any sequence residing
in the specified sequence position (1 through 6). These commands do not jump to a specific
sequence title. Whatever sequence is in the selected softkey position, will run when these
commands are executed.
Having a sequence jump to itself A decision making command can jump to the
sequence it is in. When this occurs, the sequence starts over and all commands in the
sequence are repeated. This is used a great deal in conjunction with loop counter
commands. See the loop counter description that follows.
TTL input decision making TTL input from a peripheral connected to the parallel port
(in the GPIO mode) can be used in a decision making function. Refer to "The GPIO Mode"
on page 1-107.
Limit test decision making A sequence can jump to another sequence or start over
depending on the result of a limit test. When entered into a sequence, the
and commands require you to enter the
destination sequence.
TTL OUT
TTL OUT HIGH
TTL OUT LOW
END SWEEP HIGH PULSE
END SWEEP LOW PULSE
SPECIAL FUNCTIONS
DECISION MAKING
IF LIMIT TEST PASS