The Sequencing Menu; Gosub Sequence Command; Ti'l Output For Controlling Peripherals; Itl Input Decision Making - Agilent Technologies 8719D User Manual

Pressing the Isecl] key accesses the Sequencing menu. This menu leads to a series of menus that
allow you to create and control sequences.
The GOStTB SEQUENCE softkey, located in the Sequencing menu, activates a feature that allows
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 amplifier gain
measurements. In-between each power level setting, call sequence 1 as a sub-routine by
pressing GOSUB SEQIJEWE SEQUEWE 1 . Now, sequence 2 will print the measurement
results for each input power level applied to the amplifier.
This menu can be accessed by pressing TTL I/# in the Sequencing menu.
Eight lTL compatible output lines can be used for controlling equipment connected to the
parallel port. By pressing a TTL f/O you will access the softkeys (listed below) that control
the individual output bits. Refer to Figure 6-81 for output bus pin locations.
a s b i n a r y .
SET 3BfT lets you set a single bit (0 - 7) to high on the output bus.
CLEAR l$T lets you set a single bit (0 - 7) to low on the output bus.
Five 'l"l'L compatible input lines can be used for decision making in test sequencing. For
example, if a test fixture 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 TTL 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 functions, press a TTL X/O . Refer to Figure 6-81 for input bus pin locations.
looking for.
is in a high state.
L lets you jump to another sequence if the single input bit you selected
is in a low state.
6-142 Application and Operation Concepts