HP 54501A - Timebase Program

Timebase
Program
This
sample
program
demonstrates
some
of the
commands
in
the
TIMEBASE
subsystem.
The
program
assumes
that
the
AC
CAL
signal
from
the
rear
panel
of
the
instrument
is
connected
to
channel
1
through a
10:1
probe.
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
320
330
340
350
360
CLEAR
707
OUTPUT
707;":EOI
ON"
OUTPUT
707;"*RST"
OUTPUT
707;":AUTOSCALE"
WAIT
3
REAL
Sens,Tdelay
INTEGER
J
OUTPUT
707;":BNC
PROBE"
OUTPUT
707;":ACQUIRE:TYPE
NORMAL"
OUTPUT
707;":TIMEBASE:RANGE
5E-4"
OUTPUT
707;":TIMEBASE:DELAY
0
OUTPUT
707;":TIMEBASE:REFERENCE
CENTER"
OUTPUT
707;":BEEPER"
OUTPUT
707;":SYSTEM:OSP
ENTER 2
•PRESS
ENTER
-
DELAY
FROM TRIGGER EVENT
WILL
CHANGE'"
OUTPUT
707;":SYSTEM:DSP
Tde1ay=0
'The
following
lines
vary
the
timebase
delay
i
FOR
J=l
TO
18
OUTPUT
707;":TIMEBASE:DELAY
";Tde1ay
Tde1ay=Tde1ay+4E-5
WAIT
.3
NEXT
J
i
OUTPUT
707;":BEEPER"
OUTPUT
707;":SYSTEM:DSP
"PRESS
ENTER
HORIZONTAL
TIME WILL
CHANGE'"
ENTER
2
'Device
clear
command.
•initializes
HP-IB
registers.
'Turn on
EOI
•Reset
instrument to
•known
state
'Autoscales
the
unit
•Set
up
Sens
and
Tdelay
!as
variables
'Set up
J
as
variable
!BNC
output
to probe
mode
'Real
time
acquisition
'Set timebase
to
50
us/div
'Set
delay to
zero
'Delay
reference
at
•center
of
graticule
'Set
Tdelay to
zero
Example
Programs
B-4
HP
54501A
Programming