To maintain protection from electric shock and fire, replacement components in mains
circuits - including the power transformer, test leads, and input jacks - must be
purchased from Keithley Instruments. Standard fuses with applicable national safety
approvals may be used if the rating and type are the same. Other components that are
not safety-related may be purchased from other suppliers as long as they are equivalent
to the original component (note that selected parts should be purchased only through
Keithley Instruments to maintain accuracy and functionality of the product). If you are
unsure about the applicability of a replacement component, call a Keithley Instruments
office for information.
To clean an instrument, remove power from the instrument. Use a damp cloth or mild,
water-based cleaner. Clean the exterior of the instrument only. Do not apply cleaner
directly to the instrument or allow liquids to enter or spill on the instrument. Products
that consist of a circuit board with no case or chassis (e.g., a data acquisition board for
installation into a computer) should never require cleaning if handled according to
instructions. If the board becomes contaminated and operation is affected, the board
should be returned to the factory for proper cleaning and servicing.
Power and environmental specifications
For indoor use only.
Supply voltage
range
100 V to 240 V AC, 50 Hz to 60 Hz (auto sensing),
550 VA maximum
Altitude
Maximum 2000 m above sea level
Operating
0° C to 50° C, 70% R.H. up to 35° C. Derate 3% R.H./° C,
35° C to 50° C
Storage
-25° C to 65° C
Pollution degree
1 or 2
DC source output
202 W maximum
±40 V DC maximum
± 5.05 A at ± 40 V DC
± 10.1 A at ± 20 V DC
± 20.2 A at ± 10 V DC
Pulse region 7
Region maximums
Max pulse width
Max duty cycle
(see full
specifications for
other pulse regions)
50 A at 40 V
300 µs
1%
Measurement
input
Measurement category I
Voltage: 40 V DC maximum Hi to Lo, 250 V DC Lo to ground
Current: 5.05 A at 40 V; 10.1 A at 20 V; 20.2 A at ± 10 V
Impedance: Variable
Carefully consider and configure the appropriate
output-off state, and source and compliance levels
before connecting the Model 2651A SourceMeter
instrument to a device that can deliver energy. Failure
to consider the output-off state, and source and
compliance levels may result in damage to the
instrument or to the device under test.
