Agilent B2902A Precision Source/Measure Unit 100fA to 10A, 100nV to 210V - Parts

Manufacturer: Keysight

Model: B2902A

Condition: For Parts or Not Working. Comes in non-original packaging.  This SMU is in Fair cosmetic condition, with minor scuffs and a few scratches, especially on top.  There is a small dent on top near the back of the case.  The front and bottom say Agilent, but the boot-up screens also say Keysight; this must have been manufactured during the company's brand-name changeover.  The calibration label is expired.

Please NOTE: This unit was REJECTED from Keysight's calibration laboratory because the current measurement is bad at high currents.
The photos show the exact item(s) the buyer will receive.

Notes: This SMU is in PARTIAL working condition.  The display and controls work as expected.  It was able to perform its self-test and self-calibration routines without giving errors.  From 210V to millivolt outputs, the indicated output matches our meter pretty well (below millivolts, our cables induced too much noise). 

The reason this is listed for sale AS-IS, in need of repair is that the current output is wacky.  At low currents up to 1.5A it matches our meter pretty well, but the high current/low volts range somehow forgot how to measure right.  Both channels are capable of supplying (and sinking) current, up to and over 3A ... but the SMU thinks it is providing wrong voltages, and calculates wrong currents.

Picure 4 shows:

• our 2kΩ resistor absorbing current at high voltage
• our 2kΩ resistor being measured at 1.98k because the readings were off at maximum voltage
• Both front and rear outputs gave 105mA at 208V
• Our precision 10kΩ resistor and custom short
• Front and rear channels read "close" to actual values
• High and low voltage outputs work ok according to our meter

• The REJECTION label
• Measuring ok at 1.5A
• Giving over 3A while declaring lower currents output (VERY BAD) on both channels

Included:

• (1) Agilent B2902A SMU

Specifications:

• Manufacturer: Keysight
• Model: B2902A
• Precision Source/Measure Unit (SourceMeter)
• Five instruments in one: Voltage/Current Source, Measure Current/Voltage/Resistance
• 2 channels (front and rear)
• Currents from amps to femtoamps
• Voltages from microvolts to 210V
• Color LCD display with Single, Dual, Graph or Roll viewing modes
• Four-quadrant sink/source operation
• Maximum power: 31.8W
• Maximum DC voltage and current ranges:
  • 210V, 0.105A (pulses to 200V, 1.515A)
  • 21V 1.515A
  • 6V 3.03A (pulses to 10A)
• Programming resolutions:
  • 200mV range, 1μV
  • 200V range, 100μV
  • 100nA range, 1pA
  • 3A range, 100μA
• Measurement resolutions:
  • ±200mV range, 100nV
  • ±200V range, 100μV
  • ±100nA range, 100fA
  • ±3A range, 10μA
  • 2Ω range, 1μΩ
  • 100MΩ range, 100Ω
• Minimum pulse width: 50μS
• Overtemperature protected
• Automatic fan speed
• Digital I/O or LXI triggering
• 2- or 4-wire sensing
• Grounded or floating output
• Sweep capability: Lin, Log, or List, Single or Double direction, DC or Pulse, 1 to 100,000 steps
• Interfaces: IEEE-488 GP-IB, Ethernet, USB, and Digital I/O
• Configurable for remote safety interlocks
• SCPI programmable
• LXI compliant

AS-IS

• No returns - No refunds - No exchanges
• By purchasing this item, you are agreeing to not seek reimbursement should the item not function to the manufacturer's specifications.
• Read the notes carefully to ensure you are buying something you can use
• See complete terms

CDN Systems LLC, DBA Doug Deals, is not an authorized distributor or affiliated with the manufacturer of this product. Original manufacturer's warranty does not apply.