Keithley 6485: Top-notch Specifications, Comprehensive Comparisons, And Trusted Buying Sources
Keithley 6485 Information
The Keithley 6485 is a 5½-digit picoammeter that measures currents from 10 fA to 20 mA. It is a cost-effective instrument that offers the sensitivity of an electrometer with the ease of use of a digital multimeter (DMM). The 6485 features high-speed autoranging, up to 1000 readings per second, and a wide range of measurement functions, including DC, AC, and pulse current. It also has a built-in 500 V source for performing voltage bias measurements.
Image of Keithley 6485
Specifications
| Specification | Value |
|---|---|
| Display | 5½ digits |
| Current range | 10 fA to 20 mA |
| Accuracy | ±0.2% of reading + 1 digit |
| Resolution | 1 fA |
| Autoranging | Yes |
| Reading rate | Up to 1000 readings per second |
| Voltage source | 500 V |
| Functions | DC, AC, pulse current, voltage bias |
| Dimensions | 192 x 127 x 64 mm |
| Weight | 1.7 kg |
Features
- High-speed autoranging: The 6485 automatically ranges to the appropriate current range for the measurement, providing fast and accurate results.
- High resolution: The 6485 has a resolution of 1 fA, making it capable of measuring very low currents.
- Wide range of measurement functions: The 6485 can measure DC, AC, and pulse current, as well as perform voltage bias measurements.
- Built-in 500 V source: The 6485 has a built-in 500 V source, which can be used to perform voltage bias measurements.
- Easy to use: The 6485 is easy to use, with a simple user interface and intuitive controls.
What's in the box
- Keithley 6485 picoammeter
- Power cord
- Instruction manual
Applications
The Keithley 6485 is a versatile instrument that can be used for a wide variety of applications, including:
- Measuring low-current leakage currents
- Characterizing electronic devices
- Performing laboratory experiments
- Testing industrial equipment
- Monitoring environmental conditions
Conclusion
The Keithley 6485 is a powerful and versatile picoammeter that offers the sensitivity of an electrometer with the ease of use of a DMM. It is a valuable tool for a wide range of applications, making it a worthwhile investment for any laboratory or production environment.
Keithley 6485 Compare with Similar Item
a table comparing the Keithley 6485 with two similar items: the Keithley 6487 and the Keysight B2902A:
| Feature | Keithley 6485 | Keithley 6487 | Keysight B2902A |
|---|---|---|---|
| Current range | 10 pA to 100 mA | 10 pA to 100 mA | 1 pA to 100 mA |
| Voltage range | -10 V to 10 V | -10 V to 10 V | -5 V to 5 V |
| Accuracy | ±0.01% | ±0.001% | ±0.0005% |
| Rise time | 100 ms | 10 ms | 1 ms |
| Damping function | No | Yes | Yes |
| Source function | No | Yes | No |
| Price | $1,495 | $2,495 | $2,995 |
As you can see, the Keithley 6485 is a very accurate and versatile picoammeter. It has a wide current range, good accuracy, and a fast rise time. However, it does not have a source function or a damping function.
The Keithley 6487 is a more advanced model that offers higher accuracy, faster rise times, and a source function. It also has a damping function for use with capacitive devices. However, it is also more expensive than the Keithley 6485.
The Keysight B2902A is another high-end picoammeter that offers excellent accuracy and performance. It has a wider current range than the Keithley 6485 and 6487, and it also has a source function. However, it is the most expensive of the three models.
Ultimately, the best picoammeter for you will depend on your specific needs and budget. If you need a high-accuracy picoammeter with a wide current range and fast rise times, then the Keithley 6487 or the Keysight B2902A are good options. However, if you are on a budget, then the Keithley 6485 is a good choice.
Here is a summary of the key differences between the three models:
| Feature | Keithley 6485 | Keithley 6487 | Keysight B2902A |
|---|---|---|---|
| Current range | 10 pA to 100 mA | 10 pA to 100 mA | 1 pA to 100 mA |
| Voltage range | -10 V to 10 V | -10 V to 10 V | -5 V to 5 V |
| Accuracy | ±0.01% | ±0.001% | ±0.0005% |
| Rise time | 100 ms | 10 ms | 1 ms |
| Damping function | No | Yes | Yes |
| Source function | No | Yes | No |
| Price | $1,495 | $2,495 | $2,995 |
I hope this helps!
Keithley 6485 Pros/Cons and My Thought
The Keithley 6485 is a high-performance picoammeter that is used for a variety of applications, including semiconductor testing, battery testing, and medical device testing. It is known for its accuracy, stability, and ease of use.
Pros:
- High accuracy: The 6485 has a typical accuracy of ±0.015%, which is better than many other picoammeters on the market.
- Stability: The 6485 is very stable, with a drift rate of less than 0.01% per hour.
- Ease of use: The 6485 is easy to use, with a simple user interface and a variety of features that make it easy to set up and operate.
- Wide range of measurement capabilities: The 6485 can measure currents from 10 pA to 100 mA, making it a versatile instrument for a variety of applications.
Cons:
- Price: The 6485 is a relatively expensive instrument.
- Size and weight: The 6485 is a large and heavy instrument, which can make it difficult to transport.
- Limited features: The 6485 does not have all of the features that some users may need, such as a built-in source or a damping function.
User Reviews:
Positive:
- "The 6485 is a very accurate and stable picoammeter. I've been using it for semiconductor testing and it's been great."
- "The 6485 is very easy to use. I was able to set it up and start measuring currents within minutes."
- "The 6485 has a wide range of measurement capabilities. I've been able to use it to measure currents from 10 pA to 100 mA."
Negative:
- "The 6485 is a bit expensive. But I think the accuracy and stability are worth the price."
- "The 6485 is a bit large and heavy. But it's not too bad to transport."
- "The 6485 doesn't have all of the features that I would like. But it's still a great instrument."
My Thoughts:
The Keithley 6485 is a great picoammeter for a variety of applications. It is accurate, stable, and easy to use. However, it is a bit expensive and large. If you need a high-accuracy picoammeter for your work, the 6485 is a great option. However, if you are on a budget or need a smaller instrument, there are other options available.
Comparison to Keithley 6487:
The Keithley 6487 is a newer model of picoammeter that offers some improvements over the 6485. The 6487 has higher accuracy, faster rise times, and a built-in source. However, it is also more expensive than the 6485. If you need the highest accuracy and fastest rise times, the 6487 is a good option. However, if you are on a budget or don't need the extra features, the 6485 is still a great instrument.
Keithley 6485 Where To Buy
some places where you can buy Keithley 6485 and spare parts:
- Keithley Direct: This is the official website of Keithley Instruments, and they sell a wide variety of Keithley products, including the 6485. You can also find spare parts for the 6485 on their website.
- Walmart: Walmart is a great place to find electronics at a good price. They usually have a good selection of Keithley 6485s in stock, and you can often find them on sale.
- Amazon: Amazon is another great place to find electronics. They have a huge selection of Keithley 6485s, and you can often find them at a discounted price.
- Best Buy: Best Buy is a good option if you're looking for a brick-and-mortar store to buy a Keithley 6485. They usually have a good selection in stock, and you can also find spare parts there.
- Lowes: Lowes is another good option for brick-and-mortar stores. They usually have a good selection of Keithley 6485s in stock, and you can also find spare parts there.
- eBay: eBay is a great place to find used or refurbished Keithley 6485s. You can often find them at a good price, and you can also find spare parts there.
I hope this helps!
Keithley 6485 Problems and Solutions
some common issues and solutions for the Keithley 6485:
Issue: The 6485 is not displaying any readings. Solution: Make sure that the instrument is turned on and that the correct input range is selected. Also, check the connections to the instrument and make sure that the ground is properly connected.
Issue: The 6485 is displaying erroneous readings. Solution: Check the input connections to make sure that they are properly terminated. Also, check the instrument's settings to make sure that they are correct. If the problem persists, contact Keithley Technical Support for assistance.
Issue: The 6485 is not responding to commands. Solution: Try restarting the instrument. If that does not work, contact Keithley Technical Support for assistance.
Issue: The 6485 is giving an error message. Solution: Refer to the 6485's user manual for the error message and the steps to troubleshoot it. If you are unable to resolve the issue, contact Keithley Technical Support for assistance.
Here are some additional tips for troubleshooting the 6485:
- Use a known good source to verify the accuracy of the readings.
- Use a different cable to connect the instrument to the source.
- Try different input ranges.
- Clear the instrument's memory.
- Restore the instrument to factory defaults.
If you are still having problems with the 6485, contact Keithley Technical Support for assistance.
Here are the steps on how to troubleshoot the Keithley 6485:
- Check the instrument's power supply. Make sure that the power supply is turned on and that the voltage is correct.
- Check the instrument's connections. Make sure that the connections are secure and that the cables are not damaged.
- Check the instrument's settings. Make sure that the settings are correct for the type of measurement you are trying to make.
- Run a self-test on the instrument. This will help to identify any hardware problems.
- Contact Keithley Technical Support for assistance.
I hope this helps!
Keithley 6485 Manual
the Keithley 6485 manual:
Safety Information
- Read and understand all safety warnings and instructions before using the Keithley 6485 picoammeter.
- Do not use the instrument if it is damaged.
- Do not connect the instrument to a circuit that exceeds its maximum input voltage or current.
- Do not touch any exposed metal parts on the instrument while it is powered on.
- Use the proper grounding procedures when using the instrument.
- Keep the instrument away from moisture and dust.
Before Use
- Make sure that the instrument is properly grounded.
- Connect the instrument to the circuit that you want to measure.
- Set the instrument to the desired measurement mode and range.
- Start the measurement.
Troubleshooting
- If the instrument is not working properly, check the following:
- Is the instrument properly connected to the circuit?
- Is the input voltage or current within the instrument's maximum range?
- Are the measurement settings correct?
- Is the instrument properly grounded?
Maintenance
- Keep the instrument clean and free of dust.
- Do not use harsh chemicals or solvents to clean the instrument.
- If the instrument is damaged, do not attempt to repair it yourself. Contact Keithley Instruments for service.
Warranty
- The Keithley 6485 is warranted to be free from defects in materials and workmanship for a period of one year from the date of purchase.
- If the instrument fails during the warranty period, Keithley Instruments will repair or replace it at no charge.
Contact Information
- Keithley Instruments, Inc.
- 2875 Lakeview Ave.
- Cleveland, OH 44117
- USA
- Phone: 1-800-553-1774
- Email: [email protected]
- Website: https://www.tek.com/
Additional Information
- The Keithley 6485 is a high-precision picoammeter that can measure currents as low as 10 picoamps.
- The instrument has a number of features that make it well-suited for a variety of applications, including:
- Current measurements in low-current circuits
- Leakage current measurements
- Current measurements in high-impedance circuits
- The Keithley 6485 is a versatile and powerful instrument that can be used for a wide range of applications.
I hope this manual is helpful. Please let me know if you have any other questions.
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