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18 - Specification
Key Specifications of SMU4000 series
94
SMU4000 Series Instruction Manual
Measurement Supplementary Characteristics
Measurement Period
User settable 200µs to 20s (10µs resolution), or 0.01 to 100PLC
(0.001PLC resolution)
If set to integer PLC: synchronized to actual mains supply period
Accuracy: ± (50µs + 0.01%)
Typically, <±0.5µs delay between measured Voltage and Current
signal measurements
Temperature coefficient (5⁰
–
18⁰C and 28⁰
–
40⁰C)
± (0.15 x accuracy spec) / ⁰C
Burden
Voltage
Measurement >10G
Ω ±80
pA
Current
Measurement
4-wire sense: <±100µV
2-wire sense (front terminals): <0.16
Ω
2-wire sense (rear terminals): <0.08
Ω
External Guard offset
Voltage
<±100µV from SENSE or MAIN HI terminal
4-wire Sense Capability
Up to ±2V between respective MAIN and SENSE Terminals
Resistance Measurements (all modes except MV and MC)
Resistance is internally calculated from measured Voltage and Current.
Resistance errors (in Ohms) may be calculated from respective voltage and current
measurement results and specified errors as follows –
(Current*Voltage error + Voltage*Current error)/Current
2
)
Where Voltage is the Voltage reading in Volts (without polarity)
Voltage error is the specified Voltage measurement error in Volts
Current is the Current reading in Amps (without polarity)
Current error is the specified Current measurement error in Amps
Power Measurements (all modes except MV and MC)
Power is internally calculated from measured Voltage and Current.
Power errors (in Watts) may be calculated from respective voltage and current measurement
results and specified errors as follows –
(Current*Voltage error + Voltage*Current error + Voltage error*Current error)
Where Voltage is the Voltage reading in Volts (without polarity)
Voltage error is the respective specified Voltage error in Volts
Current is the Current reading in Amps (without polarity)
Current error is the respective specified Current error in Amps