Keithley 480 Picoammeter

Keithley 480 Picoammeter
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Keithley 480 Picoammeter Keithley 480 Picoammeter Keithley 480 Picoammeter
Keithley 480
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Manual

The Model 480 is a 3½ digit Picoammeter that provides seven decade current ranges from 10-9 to 10 -3 ampere, with 100% overranging on all ranges. The instrument features include an input voltage burden of ≤ 200V, front panel zero check and adjustment, an analog output and automatic polarity indication of the input current.
 

Features:

  • Maximum Transient Overload Voltage: 1000V for 3 seconds at 10 mA.
  • Input Voltage Burden: Less than 200 µV.
  • Settling Time at Display: Less than 1 second.
  • Display: Four 0.5" LED digits with appropriate decimal point and polarity indications.
  • Conversion Period: 400 milliseconds.
  • Over-range Indication: Display blinks all zeros above 1999 counts.
  • Maximum Common Mode Voltage: 30V rms, DC to 60 Hz sine wave.
  • Analog Output Voltage: 1 volt = 1000 counts.
  • Analog Output Resistance: 1000 ohms.
  • Connectors: Input: BNC, Output: Banana Jacks.
 

Specifications:

Range Maximum Reading Accuracy Analog Rise Time Normal Mode Rejection Ration Maximum Allowable Input
1 nA 1.999 0.8% + 4d 70 ms 70 db 600 V
10 nA 19.99 0.8% + 3d 70 ms 70 db 600 V
100 nA 199.9 0.5% + 3d 7 ms 60 db 600 V
1 µA 1.999 0.5% + 3d 7 ms 60 db 600 V
10 µA 19.99 0.5% + 3d 4 ms 50 db 75 V
100 µA 199.9 0.5% + 3d 1 ms 50 db 75 V
1 mA 1.999 0.5% + 3d 1 ms 50 db 20 V