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3-6
Measurements and Sourcing Voltage
Step 5. Connect the current to be measured to the picoammeter
Basic connections for measurements are shown in
.
WARNING
A safety shield is advisable whenever floating measurements are being
made. Connections for the safety shield are shown in
. The
metal safety shield must completely surround the noise shield or float-
ing test circuit, and it must be connected to safety earth ground using
#18 AWG or larger wire.
NOTE
When not making floating measurements, it is recommended that you ground
measurement LO at only one place in the circuit, such as with the ground link
connection on the rear panel of the 6487. (See
Fundamental information on making connections to the picoammeter input is
provided in
.
Step 6. Disable zero check and take a reading from the display
If the readings are noisy, you may want to use filtering to reduce noise. Filtering is covered
in
Figure 3-1
Connections for current measurements
Black (LO)
Red (HI)
237-ALG-2
Cable
Metal Noise Shield
Metal Safety Shield
Safety
Earth
Ground
Green
(Chassis)
Model 6487
120
LINE RATING
50, 60Hz
50 VA MAX
INPUT
(CHANGE IEEE ADDRESS
WITH FRONT PANEL MENU)
IEEE-488
CAT
I
TRIGGER LINK
RS-232
MADE IN
U.S.A.
ANALOG OUT
DIGITAL I/O
INTERLOCK
505V
MAX
V-SOURCE OUTPUT
505V PK TO CHASSIS
LO
HI
!
!
FUSE
LINE
630mAT
(SB)
100 VAC
120 VAC
315mAT
(SB)
220 VAC
240 VAC
505V PK
505V PK
505V PK
Содержание 6487
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Страница 35: ...1 20 Getting Started Model 6487 User s Manual...
Страница 47: ...2 12 Connections Model 6487 User s Manual...
Страница 61: ...3 14 Measurements and Sourcing Voltage Model 6487 User s Manual...
Страница 85: ...7 8 Remote Operation and Commands Model 6487 User s Manual...
Страница 86: ...A Specifications...
Страница 88: ...B GeneralMeasurement Considerations...
Страница 94: ...C ExamplePrograms...
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