Boolean Parameters; Reading Instrument Errors - HP 8360 User Handbook Manual

Reading Instrument
Errors
Although discrete parameters values look like command keywords,
do not confuse the two. In particular, be sure to use colons and
spaces properly. Use a colon to separate command mnemonics from
each other. Use a space to separate parameters from command
mnemonics.
Boolean Parameters. Boolean parameters represent a single binary
condition that is either true or false. There are only four possible
values for a Boolean parameter.
Examples of Boolean parameters:
Boolean TRUE, upper/lower case allowed
ON
Boolean FALSE, upper/lower case allowed
OFF
Boolean TRUE
1
Boolean FALSE
0
Examples of Boolean parameters in commands:
100 OUTPUT OSource;":FM:STATe On"
110 OUTPUT OSource;":AM:STATe 1"
When debugging a program, you may want to know if an instrument
error has occurred. Some instruments can display error messages on
their front panels. If your instrument cannot do this, you can put the
following code segment in your program to read and display error
messages.
10 !
20 !
T h e r e s t o f y o u r
3 0
! v a r i a b l e d e c l a r a t i o n s
40 !
50 DIM
60 INTEGER Err-num
70 !
80 ! Part of your program
9 0 ! t h a t g e n e r a t e s e r r o r s
100 !
110 !
200 REPEAT
210 OUTPUT QBox;":SYST:ERR?"
220 ! q u e r y i n s t r u m e n t e r r o r
230 ENTER OBox;Err-num,Err-msg$
240 ! Read error #, message
250 PRINT Err-num,Err-msg$
260 ! P r i n t e r r o r m e s s a g e
270 UNTIL Err-num = 0
2 8 0 ! R e p e a t u n t i l n o e r r o r s
290 !
3 0 0 ! T h e r e s t o f y o u r p r o g r a m
310 !
Getting Started Programming 1-75