Note
I
We will not program markers because we do not need
them.
r
After
*RST
the
L1ST:FREQ:MARK:STAT
list contains one entry
with the value
OFF.
This entry can be thought of as being replicated
as many times as imposed by the other non-singular lists. We will
store the parameters
in
data lines.
The
first data line is the sweep sequence as a string and the number
of intervals is defined by the succeeding data lines.
10 List-data:
!
20
!
30 DATA "(1:4)",4
40
!
50
!
The following 4 data lines contain
:
60
!
start
,
stop
,
"spacing"
,
time
70 DATA lE6
,
13E6
,
"LIN"
,
1
80 DATA 13E6
,
13E6
,
"LIN"
,
2
90 DATA 13E6
,
1E6
,
"LIN"
,
1
100 DATA 1E6
,
13E6
,
"LOG"
,
3
110
!
120
!
some variables
130
!
140
!
first the arrays for the
list
parameters
150
!
160 REAL
Lstart
(1
:
10)
!
start
frequencies
170 REAL Lstop(1: 10)
!
stop frequencies
180 REAL Ltime (1
:
10)
!
dwell times
190
DIM
Lspac$ (1
:
10) C51
!
spacing modes
200
DIM
Lseq$[801
!
sequence
210
DIM
Opc-resp$ C31
!
for entering the *OPC? response
220
!
230 INTEGER
I
!
the famous all purpose
I
240 INTEGER No-of-int
!
number of intervals
250
!
260 REAL El440
!
for the instruments HP-IB address.
270
!
Notice that
an
INTEGER
is
too small to hold
280
!
a HP-IB address with secondary addressing.
290
!
300 E1440=70911
!
assumed slot
0
commander
is
connected to
310
!
HP-IB interface with select code 7,
320
!
primary
HP-IB
address of slot 0 commander
is
9
330
!
and logical address of El440
is
11
(secondary
340
!
HP-IB address
is
logical add shifted left 3 bits)
350
!
360
!
lets fill the parameter arrays first
370
!
380 RESTORE List-data
!
not necessary in a program as short as this
3-8
Using
the
HP
E1440A
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