5-6
Delta, Pulse Delta, and Differential Conductance
Model 6220/6221 Reference Manual
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System connections
WARNING
Before making or breaking system connections, the Models
622x and 2182/2182A, and the PC must be turned off and the
line cords must be disconnected from AC line power.
System connections depend on the system configuration being used (see
). Connections for the two system configurations are explained as fol-
lows:
Connections – stand-alone system
System connections for this configuration are shown in
.
RS-232
– The Model 622x communicates with the Model 2182/2182A via the
RS-232 interface. The Model 622x sends setup commands to the Model 2182/
2182A, and receives data (readings) from the Model 2182/2182A. Make sure to
use a null-modem RS-232 cable for this connection.
Trigger Link
– The Trigger Link synchronizes triggering between the Current
Source and the Nanovoltmeter. Trigger Link connections assume that the Model
2182/2182A is using the factory default (hard-wired) configuration:
EXT TRIG (input) = line #2
VMC (output) = line #1)
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Summary of Contents for 6220
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