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Example: Scanning
Using TTL VXIbus
Triggers
E1406A
Command Module
Trig
In
Trig
Out
50 Switchbox Applications
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This example uses the TTL VXIbus triggers (TTLT 0-7) to synchronize
channel closures with the E1412A 6-Digit Multimeter. A 2-wire ohms
measurement is performed. Measurement synchronization is attained by
using the following E1406 and E1412A signals.
•
E1406 TTL Trig In
multiplexer to change channels
•
E1406 TTL Trig Out
multimeter for a measurement.
•
E1412A TTL Ext Trig
multimeter to initiate a measurement.
•
E1412A TTL VM Complete
multiplexer that measurement is complete and the multiplexer
should change channels.
The E1412A multimeter GPIB select code = 7, primary address = 09 and
secondary address = 03 (addressed at 70903). The E1476A GPIB select
code = 7, primary address = 09 and secondary address = 14 (addressed at
70914). Figure 2-7 shows connections for this example. A BASIC language
example program follows Figure 2-7.
E1412A
Multimeter Module
Terminal Module
Trig
VM Complete
Figure 2-7. Example: Scanning Using TTL VXIbus Triggers
is used by the multimeter to trigger the
is used by the multiplexer to trigger the
is used by the multiplexer to signal the
used the multimeter to signal the
Command
Module
E1476A
Multiplexer Module
E1476A
E1412A
E1476A
Multiplexer Modules
Chapter 2
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