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- Keithley Applications
- Posts: 2849
- Joined: June 10th, 2010, 6:22 am
- Country: United States
Low noise cable from Keithley(model 4801 or 4803) which has graphite lubrication on the shield braid greatly reduces the tribo electric effect can get you down to about 100fA. The cable must be rigidly supported.
The longer the cable the more chance for noise, drift and leakage and longer settle times.
Hope this helps.
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