The Sequencing Menu

Pressing the Lse(L) key accesses the Sequencing menu. This menu leads to a series of menus that aRow you to create and control sequences,

Gosub Sequence Command

The ~.~~~~~~~~~~ softkey, located in the Sequencing menu, activates a feature that allows

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the sequence to branch off to another sequence, then return to the original sequence. For example, you could perform an amplifier measurement in the following manner:

1.Create sequence 1 for the specific purpose of performing the gain measurement and printing the results. This sequence will act as a sub-routine.

2.Create sequence 2 to set up a series of different input power levels for the ampliiler gain

measurements In-between each power level setting, call sequence 1 as a sub-routine by ,: _. _ ~,~,~,~),~,~.~.:,~,~,~~,.,.,.,.

pressing ~~~~~~~~~~~ ~~~~~~:. Now, sequence 2 m p&,t the measurement

,.,...;.;~;;..;;;~..~~..............//.;;;.__ ..A..A.,.,.,..,.,.,.,.,...,,.,,.~,.,.‘.:...~.~...::.. c _....................................

results for each input power level applied to the amplifier.

TI’L I/O Menu

This menu c- be accessed bypressing ;~~~~:i h the Sequencing menu.

l’TL Output for Controlling Peripherals

Right TTL compatible output lines can be used for controlling equipment connected to the

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p~~elpofi. Bypressing~~~~~~ you m access the &&eys(~&edbelow)t&t control

the individual output bits Refer to Figure 6-81 for output bus pin locations.

~~~~~~ lets you set a single bit (0 _ 7) to high on the output bus.

-.._.......-...

~~~~~leti you set a swe bit (o _ 7) to low on the output bus.

‘ITL Input Decision Making

Five ITL compatible input lines can be used for decision making in test sequencing. For example, if a test Mure is connected to the parallel port and has a micro switch that needs to be activated in order to proceed with a measurement, you can construct your test sequence so that it checks the ‘ITL state of the input line corresponding to the switch. Depending on whether the line is high or low, you can jump to another sequence‘lb. access these decision

making fun&ions, press @ ~~~~~~. Refer to Figure 6-81 for input bus pin lo&ions.

lets you jump to another sequence if the single input bit you selected

6-146 Applicationmd Operation Concepts

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HP 8753E manual Sequencing Menu, Results for each input power level applied to the amplifier