Cvexample - Keithley 595 Instruction Manual

GETTING STARTED
2.5.5 CV Example
The power ups measurement
configuration is
identical to
that of the previous example. Note that the device is discon-
Now that the user is acquainted with making basic
netted at the box on the voltage source side.
capacitance measurements, the following example will il-
lustrate the use of the voltage source to generate a stair-
case waveform while measuring capacitance.
Button
Press
Display Remarks
1. POWER IX
Memory test (RAM)
LO.
Memory test (ROM)
o.ooo IIF 2C!nF capacitance range, ZERO CHECK on, square wave.
CONFIGURE VOLTAGE SOlJIb
2. SELECT A
.dc
3. A LIMIT
4. ADJUST 'I (hold)
20.00
04.00
5. v LIMIT
6. ADJUST A (hold)
z
STEPV
8. Sm, then STEP V
9. ADJUST A
10. DELAY TIME
11. ADJUST A (hold)
12. DISPLAY SOURCE
I.3 ADJUST v (hold)
-20.00
-01.00
00.05
00.05
00.10
00.07
00.50
00.00
-0l.00
Select DC (tmns off STEP WAVEFORM). Capacitance not
measured when voltage source set to DC.
Voltage source upper LIMIT (20V) displayed.
Adjust voltage source upper LIMIT to 4V. (Press SHIFT, then AD-
JUST for coarse adjustment)
~Voltage source lower LIMIT (-2OV) displayed.
Adjust voltage source lower LIMIT to -lV. (Press SHIFT then
ADJUST for coarse adjustment)
~Display present STEP magnitude'and STEP type (square wave).
Change STEP type to staircase.
Adjust STEP voltage to .lV. ~~~
Display present DELAY TIME (0.07 seconds).
~Adjust~DELAY TIME to 0.5 seconds.
Display present voltage source setting (O.OOV).
Adjust voltage soUTCe to lower LIMIT. (note that -lV is the limit
of adjustment as set in step 6 above)
STAIRCASE OPERATION
14. SELECT v
xX.xX v $&xt STEP waveform (set 10~ s@ircgse in step 8), observe that
source steps are O.lV. Source stops at upper LIMIT (4V) and
waveform becomes DC.
15. STWV
00.10 ST Display STEP voltage.
16 +I-
-00.10 ST Change STEP direction.
17. DISPLAY SOURCE
04.00
V
Display voltage source output.
7.8. SELECT v
xX.xX v Select and start staircase.
19.
-01.00 v Source stops at -lV and waveform becomes DC.
PAUSING STAIRCASE WAVEFORM
Use SELECT v to start staircase, SELECT A to pause, and SELECT v to continue.
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