Isolated Connections - Keithley 2500 User Manual

Model 2500 and 2502 User's Manual

Isolated connections

To maintain proper isolation between the analog outputs and chassis ground, it is strongly
recommended that you use the isolated connections shown in
Analog Devices 3B41-03 Isolated Wideband Voltage Input is used to provide isolation
between the Model 2502 ANALOG OUT and the measuring instrument. Analog output HI
(center conductor) is connected to the HI input terminal of the isolator and analog output
LO (inner shield) is connected to the LO input. The two isolator V
nected to the measuring instrument HI and LO INPUT terminals as shown.
Refer to the 3B41-03 documentation for connections, power supply, and configuration
information for your application.
Figure 2-11
Isolated analog output connections
Measuring Instrument
Ω2 Ω4
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Analog Devices 3B41-03
Wideband Isolated
Voltage Input
INPUT
HI
V
OUT
SENSE
INPUT
Ω 4 WIRE
HI
V
OUT
350V 1100V
!
PEAK PEAK
Common
2001 MULTIMETER
LO
500V
PEAK
INPUTS
TEMP
RANGE F R
AUTO
FRONT/REAR
2A 250V
AMPS
RANGE
CAL
ENTER
INPUT
LO
Center
Conductor
Triax
Cable
HI
WARNING:
Input
INPUT
RATINGS MAX.
100V @ 20mA
COMMON
MODE
CHANNEL 1 CHANNEL 2
200V
LO
!
CAT I
ANALOG
OUT
VOLTAGE
SOURCE
Inner
OUT
Shield
CAUTION:
CHANNEL 1
ANALOG
OUT
Connections
Figure 2-11. In this case, an
terminals are con-
OUT
Model 2502
NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
IEEE-488
MADE IN
(CHANGE IEEE ADDRESS
U.S.A.
WITH FRONT PANEL MENU)
DIGITAL I/O
RS-232
TRIGGER LINK
LINE RATING
50, 60Hz
60 VA MAX
FUSE LINE
630 mAT 100 VAC
(SB) 120 VAC
!
315 mAT 220 VAC
(SB) 240 VAC
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
2-13