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Initialization
To make sure the bus and all appropriate interfaces are in a known state,
begin every program with an initialization statement. BASIC provides a
CLEAR command that clears the interface buffer. If you are using GPIB,
CLEAR will also reset the parser in the logic analyzer. The parser is the
program resident in the logic analyzer that reads the instructions you send to
it from the controller.
After clearing the interface, you could preset the logic analyzer to a known
state by loading a predefined configuration file from the disk.
Refer to your controller manual and programming language reference manual
for information on initializing the interface.
Example This BASIC statement would load the configuration file "DEFAULT " (if it
exists) into the logic analyzer.
OUTPUT XXX;":MMEMORY:LOAD:CONFIG ’DEFAULT ’"
Refer to chapter 10, "MMEMory Subsystem" for more information on the
LOAD command.
Example Program This program demonstrates the basic command structure used to program
the 1660-series logic analyzers.
10 CLEAR XXX !Initialize instrument interface
20 OUTPUT XXX;":SYSTEM:HEADER ON"!Turn headers on
30 OUTPUT XXX;":SYSTEM:LONGFORM ON" !Turn longform on
40 OUTPUT XXX;":MMEM:LOAD:CONFIG ’TEST E’" !Load configuration file
50 OUTPUT XXX;":MENU FORMAT,1" !Select Format menu for machine 1
60 OUTPUT XXX;":RMODE SINGLE" !Select run mode
70 OUTPUT XXX;":START" !Run the measurement
Introduction to Programming
Initialization
1–4