Datasheet

Page 11
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Voltage measurement
Measurement range Display resolution Accuracy ± (% + offset)
2 V 1 μV 0.025 + 40 μV
20 V 10 μV 0.025 + 400 μV
Temperature coefficient 0 to 18°C and 28 to 45°C ± (0.05 x Accuracy)/°C
Supplemental characteristics
Input bias current < 20 fA
Input impedance > 200 TΩ, parallel with < 20 pF (non-guarded) or < 2 pF (guarded)
RMS noise 1.4 μV for 2 V range, 10 s duration, shorted input
NMRR
1
> 60 dB
CMRR
2
> 140 dB at DC; > 70 dB at 50 Hz or 60 Hz
Notes
Conditions: properly zeroed, 6½-digit, 1 PLC
1. Normal mode rejection ratio, integration time = 1, 2, ..., 100 PLC; power line frequency ± 0.1%
2. Common mode rejection ratio: 1 kΩ LO lead unbalance. Add the NMRR for PLC integration time.
Charge measurement
Measurement range
Display resolution Accuracy
1
± (% + offset)
2 nC
1 fC 0.4 + 50 fC
20 nC 10 fC 0.4 + 500 fC
200 nC 0.1 pC 0.4 + 5 pC
2 μC 1 pC 0.4 + 50 pC
Temperature coefficient 0 to 18°C and 28 to 45°C ± (0.1 x Accuracy)/°C
Notes
Conditions: Properly zeroed, 6½-digit, 1 ms aperture, specifications apply at 1 to 10 ms after charge acquisition.
1. Add 6 fC/s to the accuracy specification for the time span between NULL and measurement
Voltage source
Sourcing range Display resolution Accuracy ± (% + offset) Output current
1
Output noise
2
Settling time to
rated accuracy
1,3
20 V 700 μV 0.05 + 2 mV ± 20 mA 55 μVp-p
(0.1 Hz to 10 Hz)
1.6 mVrms
(10 Hz to 20 MHz)
200 μs
1000 V 35 mV 0.05 + 100 mV ± 1 mA 2.6 mVp-p
(0.1 Hz to 10 Hz)
3.0 mVrms
(10 Hz to 20 MHz)
5 ms
Temperature coefficient 0 to 18°C and 28 to 45°C ± (0.05 x Accuracy)/°C
Source function DC, sweep (linear single, linear double, list), ARB (square)
Notes
1. Supplemental characteristics
2. 10 Hz to 20 MHz: Supplemental characteristics
3. Open load
Temperature measurement (Thermocouple)
Temperature sensor Range Accuracy ± (% + offset)
1
Unit
Type-K thermocouple –25°C to 150°C 0.2% + 2°C °C, °F and K
Temperature probe in humidity sensor
2
–40°C to 80°C 0.5°C °C, °F and K
Notes
1. Thermocouple accuracy excluded for thermocouple, temperature probe accuracy included for humidity sensor
2. Supported humidity sensor: EE07 Digital Humidity / Temperature Probe from E+E Electronik