Chapter 11 151
Using HP Instrument BASIC
Usable I/O Interfaces and Select Code
11. Using HP Instrument
2. Chapter Title 3. Chapter Title
4. Chapter Title
5. Chapter Title
BASIC
Usable I/O Interfaces and Select Code
Interfaces usable in the 4294A Instrument BASIC and their select codes are as follow.
External RUN/CONTinue Connector
Applying a TTL-level signal to the RUN/CONT connector located on the 4294A's rear
panel allows you to externally release either the RUN trigger or the CONT trigger for the
program. The pulse to be applied needs to be of negative TTL level and to be not less than
20 μsec in pulse width. The trigger is made effective at the trailing edge of the pulse.
Select code Device
1
2
7
8
LCD
Keyboard
External GPIB interface
Internal GPIB interface
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