Keithley 6400 Series Picoammeters

The cost-effective 5½-digit Model 6485 Picoammeter can measure currents from 10fA to 20mA, at speeds up to 1000 readings per second. The Model 6487 Picoammeter/Voltage provides higher accuracy and faster rise times than the 6485, a 500V source, and a damping function for use with capacitive devices. The Model 6482 Dual-Channel Picoammeter/Voltage Source offers higher measurement resolution than the Model 6485 or Model 6487 and dual, independent 30V voltage bias sources.

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Model Current Range Number of Channels PC Interface Resistance Source
6482 2nA – 20mA 2 GPIB, RS-232 – 0 – ±30V, each channel
6487 2nA – 20mA 1 GPIB, RS-232 10Ω – 1015Ω

 

 0 – ±500V

 
6485 2nA – 20mA 1 GPIB, RS-232 – –

 

6482 Dual-Channel Picoammeter/ Voltage Source
The Model 6482 Dual-Channel Picoammeter/Voltage Source provides two independent picoammeter/voltage source channels for a wide range of low-level measurement applications that require dual-channel measurements. Building off of the proven measurement capabilities of Keithley’s Model 6485 5½-digit Picoammeter, the Model 6482 adds higher measurement resolution, a second measurement channel, and dual, independent 30V voltage bias sources.

Key features

  • Dual-channel, 6½-digit measurement capability
  • Dual ±30V bias sources
  • Measure currents up to 20mA
  • Measure currents with 1fA resolution
  • 0–10V analog output for high
  • resolution measurement feedback
  • Supports assembly process, final testing, parts binning, and specification
  • 3000-point buffer memory on each channel allows data transfer after test completion
  • Trigger Link for binning and sweep test operations
  • IEEE-488 and RS-232 interfaces

 

Applications

  • Manufacturing component test
  • Dual diode testing
  • Semiconductor component testing
  • Multi-pin component testing
  • Ion beam monitoring
  • Electron microscopy

 

6487 Picoammeter/Voltage Source
The 5½-digit 6487 Picoammeter/Voltage Source improves on the measurement capability of the award-winning 6485, and adds a high resolution 500 V source. It provides higher accuracy and faster rise times than the 6485, as well as a damping function for use with capacitive devices.  With eight current measurement ranges and high speed autoranging, this cost-effective instrument can measure currents from 20 fA to 20 mA, take measurements at speeds up to 1000 readings per second, and source voltage from 200 µV to 505 V.

Key Features

  • 10 fA resolution
  • 5½-digit resolution
  • <200 µV burden voltage
  • Alternating Voltage method ohms measurements
  • Automated voltage sweeps for I-V characterization
  • Floating measurements up to 500 V
  • Up to 1000 readings/second
  • Built-in 486 and 487 emulation mode
  • IEEE-488 and RS-232 interfaces
  • Analog output
  • Digital I/O

 

Applications

  • Resistance/resistivity measurements
  • Beam monitoring and radiation monitoring
  • Leakage current testing in insulators, switches,
  • relays, and other components
  • Galvanic coupling measurements
  • I-V characterization on semiconductor and
  • optoelectronic devices
  • Fiber alignment
  • Circuit test and analysis in DCLF circuits
  • Sensor characterization
  • Capacitor leakage

 

6485 Picoammeter
The 5½-digit Model 6485 Picoammeter combines Keithley’s expertise in sensitive current measurement instrumentation with enhanced speed and a robust design. With eight current measurement ranges and high speed autoranging, this costeffective instrument can measure currents from 20fA to 20mA, taking measurements at speeds up to 1000 readings per second.

Although it employs the latest current measurement technology, it is significantly less expensive than other instruments that perform similar functions, such as optical power meters, competitive picoammeters, or user-designed solutions. With a price that’s comparable to a general purpose DMM, the Model 6485 makes picoamp-level measurements affordable for virtually any laboratory or production floor.

Key features

  • Cost-effective low current measurement solution
  • 10fA resolution
  • 5½-digit resolution
  • <200µV burden voltage
  • Up to 1000 readings/second
  • Built-in Model 485 emulation mode
  • IEEE-488 and RS-232 interfaces
  • Analog output

Applications

  • Beam monitoring and radiation monitoring
  • Leakage current testing in insulators, switches, relays, and other components
  • SEM beam current measurements
  • Galvanic coupling measurements
  • Optoelectronic device testing and characterization
  • Optical fiber alignment

 

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