HP 3468A - Page 49

AUTOIO
(KEQ] [ALPHA] AUTOIO [ALPHA
Comments
The 82160A interface module for the calculator controls the interface loop
according to the modules operating mode - either Auto or Manual (see MANIO).
The Auto mode is the easier mode to use with all HP-IL devices including the
3468A. This is especially true if you have one printer and/or one mass storage
device in the loop.
In the Auto mode, when you execute a printer or mass storage operation, the in-
terface automatically searches through the loop for the proper device to carry out
the instruction. Hence the name AUTOIO. For example, if you execute the PRA
(PRint Alpha register) function when the 3468A is selected, the printer in the loop
automatically performs the operation. In the Manual mode, the printer would have
to be “SELECTED” before the PRA function is executed.
Writing Programs
Earlier in this chapter we looked at a simple ac voltage measurement problem and
developed a simple -hp- Model 41C/41CV program. That program illustrates the
essentials of programming: 1, a Label; 2, setting up the 3468A for a particular
measurement(s); 3, triggering the multimeter; and 4, inputting the results. Of
course, the program must also have an END statement. For more specific informa-
tion on programming, refer to the Owner’s Handbook and Programming Guide for
the -hp- Model 41C/41CV.
Let’s look at the sample problem again:
8
Be °F;
83 OUTA
4 INE
85 END
Line 01 is a title or “LABEL” for the program. Labels are used to identify a pro-
gram or subroutine. To run the program execute the “Label”, i.e.,
XEQ] [ALPHA] ACVOLTS [ALPHA]
44