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
Figure 5-2). Connections for the two system configurations are explained as fol-
lows:
Connections – stand-alone system
System connections for this configuration are shown in Figure 5-3.
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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