Model 6220/6221 User’s Manual Delta, Pulse Delta, and Differential Conductance 5-39
Return to Section 5 topics
Delay – The delay for Differential Conductance is used to allow the current source
to settle when the output changes to the next stepped delta level. This delay
occurs after a trigger from the Model 2182/2182A is received. Delay can be set
from 1ms to 9999.999s. The default delay setting is 2ms.
Compliance Abort – By enabling (YES) Compliance Abort, Differential Conduc-
tance operation will abort if the current source goes into compliance. By default,
Compliance Abort is disabled (NO).
Details on setting the sweep parameters are explained in “Operation”, page 5-38.
Operation
Operation – front panel
The system configuration for front panel stand-alone operation is shown in
Figure 5-2A on page 5-5.
1. Connections are shown in the following illustrations. All power must be
removed from all components in the system before making connections:
• Figure 5-3, page 5-6 – System connections
• Figure 5-5, page 5-8 – DUT test connections
2. Configure communications for the Models 2182/2182A and 622x as
explained in “Configuring communications,” page 5-9.
3. On the Model 2182/2182A, select the desired measurement range (using
the RANGE keys) and the integration rate (using the RATE key). Rate must
be set to an integer value (1, 2, 3, ... up to 50 or 60). If some other rate is
selected, it will automatically be changed to 1PLC by the Model 622x during
the arming process.
4. On the Model 622x, press CONFIG and then COND to access the DIFF
CONDUCTANCE menu. See “Configuration settings” on page 5-37 for
details on these settings.
a. Set the START, STOP, STEP, DELTA, DELAY, and compliance abort
(CMPL ABORT) parameters.
b. When finished, use the EXIT key to back out of the menu structure.
5. Set the measurement units.
The basic Differential Conductance reading is in volts (which is the default
setting). However, it can instead be expressed (and displayed) as an
Ohms, Watts or Siemens reading. See “Measurement units” on page 5-11
for details.
NOTE The source range for the Model 622x is automatically set to
the best fixed range when Differential Conductance is armed.
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