Agilent Technologies 8753ET User Manual page 123

Table 1-6 on page 1-112 for the definition of each pin of the test set I/O connector.
CAUTION +22 volts is available on the TESTSET I/O connector. Be careful not to connect this to a
printer port or to sensitive electronic equipment.
This connector, with the limit output, TTL OUT and TESTSET I/O outputs can also be used with part handlers
to provide control interface.
The TESTSET I/O bits are set using the
Seq TTL I/O TTL OUT
1-6. The value changes with the test port, so if the external control is required for both test port directions,
the settings must be made under both
can be used to set different external conditions in a test requiring changes between the forward and reverse
measurements, as might be needed in a high power test, for example.
TTL I/O Menu
This menu can be accessed by pressing
TTL Output for Controlling Peripherals Eight TTL compatible output lines can be used for controlling
equipment connected to the parallel port. By pressing
softkeys that control the individual output bits. Refer to
PARALLEL OUT ALL
binary.
lets you set a single bit (0  7) to high on the output bus.
SET BIT
lets you set a single bit (0  7) to low on the output bus.
CLEAR BIT
TESTSET I/O FWD
keys. The values of the outputs (pins 11, 22, and 23) are described in
TESTSET I/O FWD
in the Sequencing menu.
TTL I/O
Seq
Figure 1-80
lets you input a number (0 to 255) in base 10 and outputs it to the bus as
Making Measurements
Using Test Sequencing
and TESTSET I/O REV
and TESTSET I/O REV
, you will access the following
TTL I/O
for output bus pin locations.
keys under the
Table
. This capability
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