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5-10
Delta, Pulse Delta, and Differential Conductance
Model 6220/6221 Reference Manual
Return to
Figure 5-5
Guarded test connections
Configuring communications
For both front panel and remote operation, the RS-232 of the Model 2182/2182A
must be enabled (on), and the selected communications interface for the Model
622x must be the GPIB or the Ethernet (Model 6221 only).
Model 2182/2182A communications
Configure the Model 2182/2182A for RS-232 communications as follows:
On the Model 2182/2182A, press the
SHIFT
key and then the
RS-232
key to
access the RS-232 menu. From this menu, configure the RS-232 as follows:
1.
Select
ON
for the RS-232 interface.
2.
Select the
19.2K
baud rate.
3.
Select the
NONE
setting for flow control.
Details on setting communications are provided in the User’s Manual for the Model
2182/2182A (see
“Interface selection and configuration,” on page 10-3
).
DUT
High
Low
HI
LO
OUTPUT
connector
Keithley 622x
Current Source
(Inner shield set
as
Guard)
Channel 1
Guard
Test Fixture
Connect test fixture to a known
safety earth ground using #18
AWG (or larger) wire.
WARNING
Rear
Panel
Front
Panel
Triax Cable
2107
Input Cable
(Black)
INTERLOCK
connector
Interlock Cable
Interlock Switch
The triax cable and input cable shown in this drawing are
supplied with the Keithley Models 622x and 2182/2182A.
(Red)
(Green)
Guard Plate
WARNING
The voltage levels
on the Guard and
High terminals are
the same. A safety
hazard exists when
the OUTPUT is 30V
rms (42V peak) or
more.
Note
Keithley 2182/2182A
Nanovoltmeter
NOTE
For this connection scheme, the inner shield of the
Model 622x OUTPUT connector must be connected to
the driven guard. See
for de-
tails on connecting the inner shield of the OUTPUT
connector to Guard.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com
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