Datasheet
LOW LEVEL MEASURE & SOURCE
A Greater Measure of Confidence
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1.888.KEITHLEY
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6482
Dual-Channel Picoammeter/
Voltage Source
Dual-channel picoammeter/voltage source
Model 6482 specifications
SPECIFICATION CONDITIONS
This document contains specifications and supplemental information for the Model 6482 Dual-Channel Picoammeter/Voltage Source
instrument. Specifications are the standards against which the Model 6482 is tested. Upon leaving the factory, the Model 6482 meets
these specifications. Supplemental and typical values are nonwarranted, apply at 23°C, and are provided solely as useful information.
The Model 6482 provides two independent picoammeter/voltage source channels for a wide range of measurement applications. The
Model 6482 includes an analog output jack on the rear panel for each channel.
Source and measurement accuracies are specified at the Model 6482 terminals under these conditions:
1. 23° ± 5°C, <70 percent relative humidity.
2. After a one-hour warm-up period.
3. Speed normal (1 NPLC).
4. A/D autozero enabled.
5. Properly zeroed operation.
6. Calibration period: One year.
MEASUREMENT SPECIFICATIONS
1
Range
Maximum
Resolution
Accuracy
1, 2
23° ±5°C
±(% rdg + offset)
T
emperature Coefficient
0°–18°C & 28°–50°C
±(%rdg + offset)/°C
DC Input
Impedance
3
(maximum)
2.000000 nA 1 fA 1.00% + 2 pA 0.01 + 200 fA
20 kW
20.00000 nA 10 fA 0.40% + 2 pA 0.01 + 200 fA
20 kW
200.0000 nA 100 fA 0.30% + 200 pA 0.02 + 20 pA
200 W
2.000000 µA 1 pA 0.20% + 200 pA 0.02 + 20 pA
200 W
20.00000 µA 10 pA 0.10% + 20 nA 0.01 + 2 nA
2.0 W
200.0000 µA 100 pA 0.10% + 20 nA 0.01 + 2 nA
2.0 W
2.000000 mA 1 nA 0.10% + 2 µA 0.02 + 200 nA
0.2 W
20.00000 mA 10 nA 0.10% + 2 µA 0.02 + 200 nA
0.2 W
VOLTAGE BIAS SPECIFICATIONS
Range Resolution
Accuracy
23°C ±5°C
Maximum
Current Load Regulation
4
Temperature
Coefficient
±10 V <400 µV ±(0.15% of setting + 5 mV) 20 mA < 0.30%, 0 to 20 mA 150 ppm/°C
±30 V <4 mV ±(0.3% of setting + 50 mV) 20 mA < 0.30%, 0 to 20 mA 300 ppm/°C
ANALOG OUTPUT SPECIFICATIONS
OUTPUT VOLTAGE RANGE (output is inverting)
2
: –10V out for positive full scale input, +10V out for negative full scale input.
OUTPUT IMPEDANCE: 1kW typical.
Range
Accuracy
23°C ±5°C
±(% rdg. + offset)
Temperature Coefficient
0°–18°C & 28°–50°C
±(%rdg. + offset)/°C
Typical Rise Time
(10% to 90%)
2.000000 nA 6.0% + 90 mV 0.30% + 7 mV 6.1 ms
20.00000 nA 3.0% + 9 mV 0.11% + 700 µV 6.1 ms
200.0000 nA 6.0% + 90 mV 0.30% + 4 mV 395 µs
2.000000 µA 3.0% + 9 mV 0.11% + 400 µV 395 µs
20.00000 µA 6.0% + 90 mV 0.30% + 4 mV 135 µs
200.0000 µA 2.5% + 9 mV 0.11% + 400 µV 135 µs
2.000000 mA 6.0% + 90 mV 0.30% + 4 mV 21 µs
20.00000 mA 2.5% + 9 mV 0.11% + 400 µV 21 µs
TYPICAL NOISE FLOOR MEASUREMENT SPECIFICATIONS
Range
Typical Noise Floor
RMS (1 STDEV), 100 Samples
0.01 NPLC 0.1 NPLC 1.0 NPLC 10 NPLC
2.000000 nA 2.5 pA 1.5 pA 45 fA 15 fA
20.00000 nA 2.5 pA 1.5 pA 45 fA 15 fA
200.0000 nA 200 pA 120 pA 2 pA 500 fA
2.000000 µA 200 pA 120 pA 2 pA 500 fA
20.00000 µA 20 nA 12 nA 200 pA 50 pA
200.0000 µA 20 nA 12 nA 200 pA 50 pA
2.000000 mA 2 µA 1.5 µA 25 nA 5 nA
20.00000 mA 2 µA 1.5 µA 25 nA 5 nA
TYPICAL SPEED AND NOISE REJECTION
Digits
Readings per Second
NPLC NMRR
GPIB
(
SCPI)
GPIB
(488.1)
4½ 700 900 0.01 —
5½ 60 475 0.1 —
6½ 58 58 1 60 dB
GENERAL
SOURCE CAPACITANCE: Stable to 10.0nF (typical).
INPUT BIAS CURRENT
5
: 50fA max. @ 23°C.
INPUT VOLTAGE BURDEN
6
: 4.0mV maximum.
VOLTAGE SOURCE SLEW RATE: 3.0ms/V (typical).
COMMON MODE VOLTAGE: 200VDC.
COMMON MODE ISOLATION: Typically 10
9
W in parallel
with 150nF.
OVERRANGE: 105% of measurement range.
MEMORY BUFFER: 6000 readings (two 3000 point buf-
fers). Includes selected measured value(s) and time
stamp.
PROGRAMMABILITY: IEEE-488.2, RS-232, five user-defin-
able power-up states plus factory default and *RST.
OUTPUT ENABLE CONNECTOR:
Output Enable: Active low input.
Input line: SOT (start of test) trigger input.
POWER SUPPLY: 100V, 120V, 220V, 240V (±10%), 50Hz or
60Hz, 50VA maximum.
WARR ANT Y: 1 year.
EMC: Conforms to European Union EMC Directive.
VIBRATION: MIL-T-28800F random class 3.
SAFETY: Conforms to European Union Low Voltage
Directive.
WARM-UP: 1 hour to rated accuracy.
DIMENSIONS:
Rack Mount: 89mm high × 213mm wide × 370mm
deep (3.5 in. × 8.4 in. × 14.6 in.).
Bench Configuration (with handle and feet): 104mm
high × 238mm wide × 370mm deep (4.1 in. × 9.4 in.
× 14.6 in.).
WEIGHT: 23.1kg (10.5 lb.).
ENVIRONMENT: For indoor use only.
Altitude: Maximum 2000m (6562 ft.) above sea level.
Operating: 0° to 50°C, 70 % relative humidity up to
35°C. Derate 3% relative humidity/°C, 35° to 50°C.
Storage: –25° to 65°C.
NOTES
1. Speed = Normal (1.0 NPLC), filter on.
2. One year.
3. Measured as DVin/∆Iin at full scale (and zero) input currents.
4. Measured as DVin/∆Iin at full scale (20mA) and zero load currents.
5. Specification by design.
6. Measured (at input triaxial connector) as DVin at full scale (20mA)
versus zero input currents.