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APPENDIX
C
APPLE
II (APPLE
II IEEE-488
INTERFACE)
The following
program sends a command string to the Model 194 from an Apple II computer
and displays the instrument
reading string on the computer
CRT.
The computer
must be equipped
with the Apple II IEEE-488 Interface installed
in slot 3
DIRECTIONS
1. Using the front panel program feature, set the primary
address of the Model 194 to 9.
2. With the power off, connect the Model 194 to the IEEE-488 interface installed in the Apple II
computer.
3. Enter the lines in the program below, using the RETURN key after each line,
4. Run the program and type in the desired command string at the command prompt. For exam-
ple, to place the instrument
in the autorange and average modes, type in ROFlX and press the
return key.
5. The instrument
reading
string
will
then
appear
on the CRT. A typical
display
is:
NDCV+12345E+O.
PROGRAM
COMMENTS
Terminator.
Prompt for and enter command string.
Set output
to IEEE-488 bus.
Define input from IEEE-488 bus.
Enable remote.
Address 194 to listen, send string.
Line feed on.
Address 194 to talk, input data.
Untalk the 194.
Define output
to CRT.
Define input from keyboard.
Display reading string.
Repeat.
1. If conversion
to numeric
variable is required,
make the following
changes:
2. The Apple II INPUT statement terminates on commas. To avoid problems, program the Model
194 for the GO or Gl data format to eliminate
commas.
c-3
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