Table of Contents
Advertisement
IEEE-488 PROGRAMlblING
4.9.9 Analog
Output
(0)
Test Analog Output
(01)
Options of the 0 command control plotting
or graphing
through
the analog output.
The majority
of these com-
mands perform the same function
as the front panel XY
mode buttons such as XY MODE, XY TRIG, and XY DATA.
Full details on using the analog output may be found in
paragraph
3:U.
This command
sets the analog outputs
to their pro-
grammed full scale values for testing purposes. The X, Y,
and Z output levels arc progammed with the 04, 05 and
06 commands respectively.
XY MODE (02,m)
The general format of the 0 command
is:
O","l
where n and m are command options as indicated below:
Command
Description
The 01,m command performs the same operation as the
front panel XY MODE key in that it selects the type of
graphing device to be used for plotting information:
CRT,
oscilloscope, XY analog plotter, or strip chart. In the CRT
and scope modes, the horizontal
resolution
is 100 points,
while
that value
increases to 4096 and programmed
number of samples for the analog plotter and strip chart
modes respectively.
00
01
02,o
02,l
02,2
02,3
02,4
02,5
03,o
03,l
03,2
03,3
04, m
05, I"
06,I"
07,m
08,"l
09
Abort plot if presently
active.
Test Analog Output
(set outputs
to full
scale).
XY Mode Off (Power on, DCLISDC).
CRT Mode
Oscilloscope
Mode.
Future Ex&xwion.
Slow 1'I"t IXY Analoe Plotter)
Strip Chart.
"
Measurement
Buffer.
64K RAM Buffer.
Display Readings.
IEEE-488 Reading Buffer.
Program m as x-output
full scale value
(lal~lOV).
Proa-am m as Y outout full scale value
Y
Set m as Z output
blanking
level (l=high;
O=low).
Program m as XY Zoom value
(O.l~m~1.000).
Program m as XY Pan value (O<m<64k).
start Plotter.
Each of these command groups is further discussed below.
Start/Stop
Plotting
(00 and 09)
These commands perform essentially the same functions
as the XY TRIG button. By sending the appropriate
com-
mand, you can start or stop the plot. Sending 09 with the
plot mode enabled will also update the analog output buf-
fer with current information.
Note that these commands
perform essentially the same functions
as the 'I30 and T31
trigger commands.
XY DATA (03,m)
As with the XY DATA key, this command selects the source
of data for the plot: measurement
buffer, 64K RAM buf-
fer, front panel readings, or IEEE-488 reading buffer. The
measurement
buffer
mode accesses the programmed
number of samples, while the 64K RAM mode acwsses
the complete A/D RAM memory regardless of the pro-
grammed
number
of samples. Data in the front panel
reading mode will be plotted as it becomes available for
the front panel. The IEEE-488 reading buffer mode is con-
trolled by the Q command.
X Output
Full Scale (04,m)
This command performs the same function as front panel
Program 4. The allowable range for the X output full scale
value m is 1 to 1OV in 1pV increments.
Note that m is in
volts. Power up factory default is 1OV.
Y Output
Full Scale (05,m)
05,m programs the Y output full scale value in the same
manner as front panel Program 5. The value m can be set
t" values in the range of 1 to 1OV in ~/LV increments. Again,
m is in volts. Power up factory default is 1OV.
4-30
Advertisement
Table of Contents
