Datasheet
Specifications
Volts
Accuracy (1 Year)1
18°–28°C
Temperature Coefficient
0°–18°C & 28°–50°C
(% + offset)/°C
6½-Digit
Resolution
Range
2 V
(% + offset)
1 µV
0.025 + 40 µV
0.025 + 300 µV
0.06 + 3 mV
0.003 + 20 µV
0.002 + 100 µV
0.002 + 1 mV
20 V
10 µV
200 V
100 µV
NMRR
2 V and 20 V ranges: >60 dB. 200 V range: >55 dB. 50 Hz or 60 Hz2.
>120 dB at DC, 50 Hz or 60 Hz.
CMRR
Input Impedance
>200 TΩ in parallel with 20 pF, <2 pF guarded (1 MΩ with zero check on).
Small Signal Bandwidth at Preamp Output
Typically 100 kHz (–3 dB).
Notes
1. When properly zeroed, 6½-digit, 1 PLC (power line cycle), median filter on, digital filter = 10 readings.
2. Line sync on.
Amps
Accuracy (1 Year)1
18°–28°C
Temperature Coefficient
0°–18°C & 28°–50°C
(% + offset)/°C
6½-Digit
Range
20 pA
200 pA
2 nA
Resolution
10 aA 2
100 aA 2
1 fA
(% + offset)
1 + 3 fA
0.1 + 500 aA
0.1 + 1 fA
1 + 5 fA
0.2 + 300 fA
0.2 + 500 fA
0.2 + 5 pA
0.1 + 100 pA
0.1 + 500 pA
0.1 + 5 nA
0.1 + 20 fA
20 nA
200 nA
2 µA
10 fA
0.03 + 100 fA
0.03 + 1 pA
100 fA
1 pA
0.005 + 20 pA
0.005 + 100 pA
0.005 + 1 nA
0.008 + 20 nA
0.008 + 100 nA
20 µA
200 µA
2 mA
10 pA
100 pA
1 nA
0.1 + 100 nA
0.1 + 500 nA
20 mA
10 nA
Input Bias Current
<3 fA at Tcal. Temperature coefficient = 0.5 fA/°C, 20 pA range.
Input Bias Current Noise
<750 aA p-p (capped input), 0.1 Hz to 10 Hz bandwidth, damping on. Digital filter = 40 readings,
20 pA range.
Input Voltage Burden at Tcal 1°C
<20 µV on 20 pA, 2 nA, 20 nA, 2 µA, and 20 µA ranges.
<100 µV on 200 pA, 200 nA, and 200 µA ranges.
<2 mV on 2 mA range. <5 mV on 20 mA range.
Temperature Coefficient of Input Voltage Burden
<10µV/°C on pA, nA, and µA ranges.
Preamp Settling TimE (to 10% of final value), Typical
0.5 sec (damping off) 2.0 sec (damping on) on pA ranges. 15 msec on nA ranges damping off, 1 msec on
µA ranges damping off. 500 µsec on mA ranges damping off.
NMRR
>60 dB on all ranges at 50 Hz or 60 Hz3.
Notes
1. When properly zeroed, 6½-digit, 1 PLC (power line cycle), median filter on, digital filter = 10 readings.
2. aA = 10–18 A, fA = 10–15 A.
3. Line sync on.
6
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