Model 6485 Picoammeter Instruction Manual Measurement Concepts 2-5
Figure 2-2
Maximum input levels
Low noise input cables
When making precision measurements, you should always use low noise cables. The fol-
lowing low noise cables are recommended for use with Model 6485:
Model 4801 Input Cable — This 4 ft (1.2m) low-noise triax cable is terminated with male
BNC connectors on each end. (One Model 4801 is included standard with every order.)
Model 4802-10 — This 10 ft (3m) low-noise BNC cable is terminated at one end with a
male BNC connector (the other end is unterminated).
Model 4803 Low Noise Cable Kit — This cable kit includes:
• 15m (50 ft) of low noise coax cable
• 10 male BNC connectors
• 5 female BNC chassis-mount connectors
NOTE As a general rule, always use the shortest possible cable for measurements.
Input HI
Input LO
42V Peak
Chassis Ground
* Maximum Continuous Input Signals
220V Peak, DC to 60Hz sine wave
Max Continuous
Input Signal *
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