5-60 Delta, Pulse Delta, and Differential Conductance Model 6220/6221 Reference Manual
Return to Section 5 topics
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 5-7 – System connections
• Figure 5-5, page 5-10 – DUT test connections
2. Configure communications for the Models 2182/2182A and 622x as
explained in “Configuring communications,” on page 5-10.
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 5-55 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 5-16 for
details.
To set the measurement units, press the UNITS key to display the
READING UNITS menu. Select VOLTS, OHMS, WATTS, or SIEMENS.
Measurement units can be changed while Differential Conductance is
running.
6. On the Model 622x, press the COND key to arm Differential Conductance.
Details on the “Arming process” are provided on page 5-56. The Model 6221
is armed when the message “DIFF COND ARMED Press TRIG to start” is
displayed briefly and the ARM annunciator turns on.
7. On the Model 622x, press the TRIG key to start taking Differential Conduc-
tance readings and send them to the buffer.
Differential Conductance measurements will stop after the last A/D
measurement is performed. However, Differential Conductance remains
armed and can be run again by pressing the TRIG key. The new Differential
Conductance readings will overwrite the old readings in the buffer.
8. When finished, press EXIT to disarm Differential Conductance.
9. On the Model 622x, press RECALL to access the Differential Conductance
readings stored in the buffer.
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