Timebase Program - HP 54501A Programming Reference Manual

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