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Model 6220/6221 Reference Manual
Delta, Pulse Delta, and Differential Conductance
5-59
Return to
•
Model 2182/2182A
– After its Trigger Delay expires, the Model 2182/2182A
performs another measurement conversion (A/D Rdg #3). The differential
voltage (dV) is then calculated by the Model 622x. The Model 2182/2182A
outputs trigger pulse back to the Model 622x to output the next stepped cur-
rent level.
shows the data (reading) flow process from the Model
2182/2182A to the Model 622x.
Figure 5-15
Differential Conductance triggering sequence
Operation
Operation – front panel
The system configuration for front panel stand-alone operation is shown in
NOTE
Differential Conductance readings from the Mod-
el 2182/2182A will be unfiltered. Noisy readings
can be filtered by the Model 622x before sending
them into the buffer. See
for details.
622x
Diff
Cond
Delay
622x
Output
Trigger
2182/2182A
A/D Rdg
#2
dV
Calc
622x
I-Source
First dV Calcuation Cycle
Note
Time periods not
drawn to scale.
Start
622x
Output
Trigger
2182/
2182A
Trigger
Delay
2182/2182A
A/D Rdg
#1
2182/
2182A
Output
Trigger
622x
Diff
Cond
Delay
2182/2182A
A/D Rdg
#3
622x
Output
Trigger
622x
Diff
Cond
Delay
2182/
2182A
Output
Trigger
2182/
2182A
Output
Trigger
2182/
2182A
Trigger
Delay
2182/
2182A
Output
Trigger
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