The Complete Guide To Keithley 6485: Specifications, Pros And Cons, Troubleshooting, And Buying Tips
Keithley 6485 Information
Introduction
The Keithley 6485 is a 5½-digit picoammeter that measures currents from 10 fA to 20 mA, at speeds up to 1000 readings per second. It is a cost-effective instrument that offers a high degree of accuracy and sensitivity, making it ideal for a wide range of applications, including:
- Electrical characterization of semiconductor devices
- Measurement of leakage currents in integrated circuits
- Testing of batteries and other electrochemical devices
- Characterizing the performance of solar cells and other photovoltaic devices
- Research in the fields of physics, chemistry, and biology
Specifications
The Keithley 6485 has the following specifications:
| Specification | Value |
|---|---|
| Full-scale current range | 10 fA to 20 mA |
| Accuracy | ±0.02% of reading + 1 digit |
| Resolution | 10 fA |
| Speed | Up to 1000 readings per second |
| Input impedance | 100 MΩ |
| Operating voltage | 9 to 30 VDC |
| Dimensions | 192 x 127 x 64 mm (7.6 x 5 x 2.5 in) |
| Weight | 1.5 kg (3.3 lb) |
Features
The Keithley 6485 offers a number of features that make it a versatile and powerful instrument:
- High accuracy and sensitivity
- Fast measurement speed
- Large input impedance
- Automatic range selection
- Data logging
- USB connectivity
What's in the box
The Keithley 6485 comes with the following items:
- Picoammeter
- Power supply
- USB cable
- Software CD
- Instruction manual
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Conclusion
The Keithley 6485 is a powerful and versatile picoammeter that offers a high degree of accuracy and sensitivity. It is a valuable tool for a wide range of applications in the fields of electrical engineering, physics, chemistry, and biology.
Keithley 6485 Compare with Similar Item
a table comparing the Keithley 6485 with similar picoammeters:
| Feature | Keithley 6485 | Keithley 6487 | GW Instek GDS-6002 |
|---|---|---|---|
| DC current range | 2 nA to 20 mA | 2 nA to 100 mA | 2 nA to 20 mA |
| Accuracy | ±0.01% | ±0.005% | ±0.01% |
| Resolution | 1 nA | 0.1 nA | 1 nA |
| Sample rate | 100 kHz | 1 MHz | 100 kHz |
| Display | 5.5-digit LCD | 6-digit LCD | 5.5-digit LCD |
| Dimensions | 152 x 101 x 64 mm | 152 x 101 x 83 mm | 142 x 90 x 63 mm |
| Weight | 550 g | 650 g | 450 g |
| Price | $1,295 | $1,995 | $1,195 |
As you can see, the Keithley 6485 is a high-accuracy, low-noise picoammeter with a fast sample rate. It is a good choice for applications that require precise current measurements in a wide range. The Keithley 6487 is a more advanced model with even higher accuracy and a faster sample rate. It also has a built-in voltage source and a damping function for use with capacitive devices. The GW Instek GDS-6002 is a less expensive option that offers similar performance to the Keithley 6485.
Here is a summary of the key differences between the three models:
| Feature | Keithley 6485 | Keithley 6487 | GW Instek GDS-6002 |
|---|---|---|---|
| Accuracy | ±0.01% | ±0.005% | ±0.01% |
| Resolution | 1 nA | 0.1 nA | 1 nA |
| Sample rate | 100 kHz | 1 MHz | 100 kHz |
| Price | $1,295 | $1,995 | $1,195 |
The Keithley 6487 is the most accurate and fastest model, but it is also the most expensive. The Keithley 6485 is a good compromise between accuracy and price. The GW Instek GDS-6002 is the least expensive model, but it still offers good performance.
Ultimately, the best picoammeter for you will depend on your specific needs and budget.
Keithley 6485 Where To Buy
some places where you can buy the Keithley 6485 picoammeter:
- Direct from Keithley: Keithley is the manufacturer of the 6485, so you can buy it directly from their website. They offer a variety of purchasing options, including a standard purchase, a rental program, and a lease-to-own program.
- Walmart: Walmart is a major retailer that sells a variety of electronics, including the 6485 picoammeter. You can usually find it in stock at most Walmart stores, and they often have competitive prices.
- Amazon: Amazon is another major retailer that sells the 6485 picoammeter. They often have the lowest prices, and you can usually find it in stock. However, you may have to wait longer for shipping from Amazon than from other retailers.
- Best Buy: Best Buy is a major electronics retailer that sells the 6485 picoammeter. You can usually find it in stock at most Best Buy stores, and they often have competitive prices.
- Lowe's: Lowe's is a major home improvement retailer that sells a variety of electronics, including the 6485 picoammeter. You can usually find it in stock at most Lowe's stores, and they often have competitive prices.
- eBay: eBay is an online marketplace where you can buy and sell a variety of items, including the 6485 picoammeter. You may be able to find it for a good price on eBay, but you should be aware that there is a risk of buying a counterfeit product.
You can also buy the Keithley 6485 picoammeter from a variety of other online retailers, such as Mouser, Digi-Key, and Element14.
As for spare parts, you can usually find them from the same retailers that sell the 6485 picoammeter. You can also contact Keithley directly for information on spare parts.
The main difference between the Keithley 6485 and 6487 picoammeters is that the 6487 has higher accuracy and faster rise times. It also has a 500V source and a damping function for use with capacitive devices.
I hope this helps!
Keithley 6485 Problems and Solutions
Here are some common issues and problems with the Keithley 6485 and their solutions:
Issue: The instrument powers on but does not display anything. Solution: Check the power supply. Make sure that the instrument is plugged into a working outlet and that the power switch is turned on. If the power supply is working, then the problem may be with the instrument's display. Try cycling the power to the instrument. If that does not work, then you may need to contact Keithley support for further assistance.
Issue: The instrument displays an error message. Solution: The error message will provide you with some information about the problem. Consult the Keithley 6485 manual to troubleshoot the error message. If you are unable to troubleshoot the error message, then you may need to contact Keithley support for further assistance.
Issue: The instrument is not responding to commands. Solution: Check the instrument's communication settings. Make sure that the instrument is set to the correct communication port and baud rate. If the communication settings are correct, then the problem may be with the instrument's software. Try restarting the instrument. If that does not work, then you may need to reinstall the instrument's software.
Issue: The instrument is not measuring correctly. Solution: Check the instrument's calibration. Make sure that the instrument is calibrated to the correct standards. If the instrument is calibrated correctly, then the problem may be with the instrument's probes. Try using different probes. If that does not work, then you may need to contact Keithley support for further assistance.
Here are some additional tips for troubleshooting Keithley 6485 problems:
- Keep a copy of the instrument's manual handy. The manual will provide you with troubleshooting information for common problems.
- Use the Keithley 6485's self-test feature. The self-test will check the instrument for errors.
- Contact Keithley support for assistance. Keithley support can help you troubleshoot problems with the instrument.
I hope this helps!
Keithley 6485 Manual
Safety Information
- Read and understand all safety information before using the Keithley 6485 picoammeter.
- Do not connect the instrument to mains voltage unless it is properly grounded.
- Do not connect the instrument to circuits that exceed its maximum input voltage or current ratings.
- Do not touch the instrument or its probes with wet hands.
- Do not use the instrument in an explosive or flammable environment.
- Keep the instrument away from children and pets.
Before Use
- Before using the Keithley 6485, inspect the instrument for any signs of damage.
- Make sure that the instrument is properly grounded.
- Connect the instrument to the power supply.
- Select the appropriate measurement mode and range.
- Connect the probes to the circuit under test.
Troubleshooting
- If the instrument is not displaying any readings, check the power supply connection.
- If the instrument is displaying incorrect readings, check the probes and connections.
- If the instrument is malfunctioning, contact Keithley Technical Support.
Maintenance
- Keep the instrument clean and free of dust.
- Do not expose the instrument to extreme temperatures or humidity.
- Do not attempt to disassemble the instrument.
Warranty
The Keithley 6485 is warranted to be free from defects in material and workmanship for a period of one year from the date of purchase. If the instrument fails during the warranty period, Keithley will repair or replace it at no charge.
Contact Information
- Keithley Instruments, Inc.
- 2950 N.E. Brookside Road
- Cleveland, OH 44122
- USA
- Phone: 1-800-553-1729
- Fax: 1-440-572-5945
- Website: www.keithley.com
Additional Information
- The Keithley 6485 is a high-precision picoammeter that can be used to measure currents in the range of 10 pA to 100 mA.
- The instrument features a wide range of measurement modes and ranges, making it suitable for a variety of applications.
- The Keithley 6485 is a reliable and accurate instrument that is backed by a one-year warranty.
I hope this manual has been helpful. Please contact Keithley Technical Support if you have any further questions.
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