Analog Plotting; Printing Results - Keithley 595 Instruction Manual

OPERATION
3.10 ANALOG PLOTTING
In addition to sending data over the IEEE-485 bus to plot
curves with a digital plotter, the Model 595 can also out-
put data via two rear panel analog outputs to an analog
plotter, such as an X-Y recorder.
The staircase measurement described in paragraphs 3.6
through 3.8 is also applicable for measurements to be plot-
ted with an analog plotter. However, the user must draw
his own grid and labels. Keep in mind that the maximum
output voltage through the rear panel analog outputs is
+W, so scale the boundaries of the analog plotter
accordingly.
The rear panel analog outputs present the displayed
reading (C, I or Q/t) and the voltage at which the reading
was taken. The user can select X10 gain, if desired, from
the front panel analog output program to magnify the C,I
output for greater resolution (see paragraph 3.5.3 for more
information).
To plot .a curve with an analog plotter, set up a staircase
measurement with the waveform set to DC as explained
in paragraph 3.8.~ Make sure ZERO CHECK is enabled.
Then, make connections between the plotter and the Model
595. Next, set the programmed voltage sensitivity (X ads)
and the C, I, or Q/t sensitivity (Y axis) on the plotter. Finally,
set the waveform to STEP and the analog plotter will begin
to plot the Cv, IV or Q/t-V curve.
NOTES:
1. Unlike the digital plotter, the analog output follows the
displayed measurement (i.e., C and Q/t).
2. If suppress or C/Cc, is altered once the plot has started,
the plot will also be affected.
3.11 PRINTING RESULTS
The Model 595 can output data to a listen-oniy or ad-
dressable IEEE-488 printer. The printer's address must be
set to 3.
In order to send data to a printer, the Model 595's IEEEdB
code mu&be set to either 40 or 41. Code 40 will output
data with a prefix on the data string (i.e., NCVI +
L23456E-12, -01820 + 1.2340+3E-12). Code 41 will out-
put data without a prefix on the data string (i.e.,
+L2.?456E-12, -OI.820 i- L-E-12). Note that data sent
to the printer from the Model 595 follows the C, I, or Q/t
display.
To output data fmm the Model 595 to a printer, perform
the folkwing:
1. Make connections to the device under test and set up
measurement parameters.
2. Select the front panel IEEE-488 address program and set
the Model 595's address to either 40 or 41.
3. Exit the front~panel IEEE program. The Model 595 wilI
output each reading to the printer.
To stop the sequence, change the instrument's IEEE-488 ad-
dress or select-one-shot trigger using the trigger program.
NOTES:
1. When the Model 595 is sending data to a printer there
should be noother~ contmller besides the Model 595 on
the bus (although multiple Model 595s or 590s are per-
mitted provided only one instrument is talking at a time).
2.. When the Model 595 is sending data to a printer or digitaI
plotter, two such listening devices may be connected to
the bus providing they are in an addressable mode and
are set to the correct address (printer, 3; plotter, 5).
3. When the Model 595 is set at code 40-43, the device-
dependent cmnman ds K, G and Y will be affected. See
Appendix H for more information.
4 At fast reading rates, the printer may not be able to keep
up, so some readings wilI not be printed.
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