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Current Amplification (Low-Power Detectors)
Range Switch Position 123456
Low-Power Full Scale 20.00 nW 200.0 nW 2.000 µW 20.00 µW 200.0 µW 2.000 mW
Low-Power Full Scale 20.00 µW 200.0 µW 2.000 mW 20.00 mW 200.0 mW 2.000 W
(with Attenuator)
Full Scale Current:
1
20.00 nA 200.0 nA 2.000 µA 20.00 µA 200.0 µA 2.000 mA
Display Accuracy
Maximum Error 1.7% 1.7% 1.7% 1.7% 1.7% 1.7%
Expected (rms) Error 0.4% 0.4% 0.4% 0.4% 0.4% 0.4%
Display Resolution 10 pA 100 pA 1 nA 10 nA 100 nA 1 µA
Display Noise Floor
2
<10 pA <100 pA <1 nA <10 nA <100 nA <1 µA
Signal Gain
1
10
8
10
7
10
6
10
5
10
4
10
3
Absolute Maximum
Input Rating: Current 5 mA
Voltage −6V to +3V
Input Impedance 0 ohm
1
CAL Factor = 1.00E+0
2
Display Noise Floor scales with the calibration factor in the following way:
Display Noise Floor = (specified noise floor) × (calibration factor mantissa)
Voltage Amplification (High-Power Detectors)
Range Switch Position 3456
High Power Full Scale 2.000 W 20.00 W 200.0 W 2.000 kW
Full Scale Voltage:
1
2.000 mV 20.00 mV 200.0 mV 2.000 V
2
Display Accuracy
Maximum Error 1.9% 1.9% 1.9% 1.9%
Expected (rms) Error 0.4% 0.4% 0.4% 0.4%
Display Resolution 1 µV 10 µV 100 µV1 mV
Display Noise Floor
3
Accelerator Off <1 µV <10 µV <100 µV <1 mV
Accelerator On
4
<40 µV <40 µV <400 µV <1 mV
Signal Gain
1
10
3
10
2
10
1
10
0
Absolute Maximum
Input Rating: Voltage −6V to +3V
Input Impedance 1M ohm
1
CAL Factor = 1.00E+0
2
The maximum measurable input voltage allowed by the 1815-C is 300 mV.
3
Display Noise Floor scales with the calibration factor in the following way:
Display Noise Floor = (specified noise floor) × (calibration factor mantissa)
4
ACCEL ADJ fully clockwise (worst case)