Keithley 6487 Single-channel Picoammeter/voltage Source With Gpib & Rs-232 Inter

US $2,495.00

Melrose, Massachusetts, United States
Jul 9th

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<Subscribe to Our Newsletter Keithley 6487 Single-Channel Picoammeter/Voltage Source with GPIB & RS-232 Interfaces Brand: Keithley Model No: 6487 Our Model No: 6487 Product Overview Features 10fA resolution 5 1/2-digit resolution Less than 200?V burden voltage Alternating Voltage method ohms measurements Automated voltage sweeps for I-V characterization Floating measurements up to 500V Up to 1000 readings/second Built-in Model 486 and 487 emulation mode IEEE-488 and RS-232 interfaces Analog output Digital I/OApplications:: 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 Description The Keithley 6487 Picoammeter/Voltage Source's 10fA resolution, superior sensitivity, voltage sweeping, and Alternating Voltage resistance measurements make it well suited for characterizing low current devices. Using the latest current measurement technology, it is significantly less expensive than other instruments that perform similar functions, such as optical power meters, tera-ohmmeters, competitive picoammeters, or user-designed solutions. With a price that's comparable to a high-end DMM, the 6487 makes picoamp-level measurements affordable for virtually any laboratory or production floor. Low Voltage Burden and Higher Accuracy While DMMs typically employ shunt ammeter circuitry to measure current, the 6487 is a feedback picoammeter. This design reduces voltage burden by several orders of magnitude, resulting in a voltage burden of less than 200V on the lower measurement ranges. The low voltage burden makes the 6487 function much more like an ideal ammeter than a DMM, so it can make current measurements with high accuracy, even in circuits with very low source voltages. Rear Panel Triax Input This allows the picoammeter to be used in floating operation, up to 500V. When not floating, the addition of a triax to BNC adapter allows inexpensive, easy-to-use BNC cables to be employed, rather than more expensive triaxial cables. RS-232 and IEEE-488 Interfaces These interfaces make it easy to integrate the 6487 into automated test and measurement systems. Scaled Voltage Analog Output This output allows the 6487 to transmit measurement results to devices like DMMs, data acquisition cards, oscilloscopes, or strip chart recorders. Built-in Trigger Link Interface The Trigger Link interface simplifies synchronizing the 6487 with other instruments and voltage sources. This interface combines six independent selectable trigger lines on a single connector for simple, direct control over all instruments in a system. Display On/Off Switch For research on light-sensitive components, such as measuring the dark currents of photodiodes or I-V measurements on unpackaged semiconductors, the front panel display can be switched off to avoid introducing light that could significantly reduce the accuracy of the results. One-Touch Front Panel Design Functions can be configured easily with the push of a button, without complicated function menus. Wafer-Level Photodiode Testing The 6487 Picoammeter/Voltage Source can be paired with a calibrated light source and a probing fixture to create a cost-effective photodiode test system. Multiple 6487s can be connected to the DUT's probe pads to provide photocurrent readings or, with the addition of a switch matrix, one picoammeter can take current measurements from multiple pads. In the first step of the measurement process, performed in total darkness, the 6487 produces a voltage sweep and then measures the resulting dark current. In the second step, a voltage bias is applied and the resulting photocurrent is measured while the light level is increased in calibrated steps. The same basic test configuration can be used for testing positive intrinsic negative (PIN) and avalanche photodiodes (APDs). The 6487's high resolution on the 10V source range provides superior sweeping and biasing when small biases are required. The 500V source capability is necessary to bias APDs. Monitoring and Control of Focused Ion Beam Currents In semiconductor fabrication, focused ion beam systems are often used for nanometer-scale imaging, micromachining, and mapping. Careful monitoring of the magnitude of the beam current with an ion detector is critical. The ion detector generates a secondary current that's proportional to the current of the primary ion beam. When this secondary current is measured, it can be used to control the intensity of the primary beam. However, this secondary current is very low, often just a few picoaps, so the instrumentation measuring it must provide high measurement accuracy and repeatability, as well as sub-picoamp resolution. The 6487's wide measurement range and 5 1/2-digit resolution make it ideal for this application. Signal connections to the 6487 are made through the instrument's triax connector. Often, a detector may require high voltage to attract ions, making the 6487's 500V source a necessity. High Resistance Measurements The 6487 Picoammeter can be used to measure high resistances (>1GW) in applications such as insulation resistance testing. A constant voltage is placed in series with the unknown resistance and the picoammeter. The voltage drop across the picoammeter is negligible, so all the voltage appears across the unknown resistance. The resulting current is measured by the picoammeter and the resistance is calculated using Ohm's Law (R = V/I). To prevent generated current due to electrostatic interference, the unknown resistance is housed in a shielded test fixture. A small series resistor may be added to reduce noise if the unknown resistor has high stray capacitance across it. Included Components 1 - Single-Channel 5 1/2-Digit Picoammeter w/Line Cord 1 - Triax Protective Shield/Cap (CAP-31) 1 - Triax Cable (7078-TRX-3) 1 - 1 kV Source Banana Cable Set (8607) 1 - 4-Pin Female Interlock Connector (CS-459) 1 - Certificate of Calibration 1 - User Manu Terms & Conditions Please note estimated delivery time above. Contact us for details or if you have a delivery requirement. We ask for your patience while striving to ensure your shipment arrives quickly and accurately. Domestic Shipping FREE Standard Shipping on items OVER $75 and less than 30lbs to continental U.S. Add $36 for AK, HI, or PR. Please contact us for shipping rates to any overseas US territories including: Northern Mariana Islands, Guam, Puerto Rico, U.S. Virgin Islands and American Samoa. PO Boxes/APOs require USPS shipping and may therefore experience longer lead times 6.25% Sales Tax for shipping to MA International Shipping Due to international voltage requirements, please ask us prior to purchasing to confirm your product will operate correctly in your country. Please contact us for shipping rates to any overseas U.S. territories. International customers are responsible for all shipping charges, including any duties or taxes. >

Condition:	New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. ...	MPN	6487
Brand	Keithley