Datasheet

TEK.COM 9
2450-EC Graphical Potentiostat
Resistance Measurement Accuracy (Local or Remote Sense)
1, 2
Range
Default
Resolution
3
Default
Test Current
Normal Accuracy
(23°C ±5°C)
1 Year, ±(% rdg. + ohms)
Enhanced Accuracy
4
(23°C ±5°C)
1 Year, ±(% rdg. + ohms)
<2.000000 Ω
5
1 μΩ
User defined Source I
ACC
+ Meas. V
ACC
Meas. I
ACC
+ Meas. V
ACC
20.00000 Ω 10 μΩ
100 mA
0.098% + 0.003 Ω 0.073% + 0.001 Ω
200.0000 Ω 100 μΩ
10 mA
0.077% + 0.03 Ω 0.053% + 0.01 Ω
2.000000 kΩ 1 mΩ
1 mA
0.066% + 0.3 Ω 0.045% + 0.1 Ω
20.00000 kΩ 10 mΩ
100 μA
0.063% + 3 Ω 0.043% + 1 Ω
200.0000 kΩ 100 mΩ
10 μA
0.065% + 30 Ω 0.046% + 10 Ω
2.000000 MΩ 1 Ω
1 μA
0.110% + 300 Ω 0.049% + 100 Ω
20.00000 MΩ 10 Ω
1 μA
0.110% + 1 kΩ 0.052% + 500 Ω
200.0000 MΩ 100 Ω
100 nA
0.655% + 10 kΩ 0.349% + 5k Ω
>200.0000 MΩ
5
— User defined Source I
ACC
+ Meas. V
ACC
Meas. I
ACC
+ Meas. V
ACC
Temperature Coefficient, (0°–18°C and 28°–50°C)
±(0.15 × accuracy specification)/°C.
Source Current, Measure Resistance Mode
Total uncertainty = Isource accuracy + Vmeasure accuracy (4-wire remote sense).
Source Voltage, Measure Resistance Mode
Total uncertainty = Vsource accuracy + Imeasure accuracy (4-wire remote sense).
Guard Output Impedance 0.5 Ω (DC) in ohms mode.
Notes
1. All specifications are guaranteed with output ON.
2. Accuracies apply to 2- and 4-wire mode when properly zeroed.
3. 6.5 digit measure resolution
4. Source readback enabled. Offset compensation ON.
5. Source Current, Measure Resistance or Source Voltage, Measure Resistance only. For best measurements, use rear panel triax connectors.
Operating Characteristics
Max. Output Power 20 W, four-quadrant source or sink operation.
Source Limits Vsource: ±21 V (≤ 1 A range), ±210 V (≤ 100 mA range)
Isource: ±1.05 A (≤ 20 V range), ±105 mA (≤ 200 V range).
Overrange 105% of range, source and measure.
Regulation Voltage: Line: 0.01% of range. Load: 0.01% of range + 100 μV.
Current: Line: 0.01% of range. Load: 0.01% of range + 100 pA.
Source Limits Voltage Source Current Limit: Bipolar current limit set with single value. Min. 10% of range.
Current Source Voltage Limit: Bipolar voltage limit set with single value. Min. 10% of range.
V-Limit / I-Limit Accuracy Add 0.3% of setting and ±0.02% of reading to base specification.
Overshoot Voltage Source: <0.1% typical (full scale step, resistive load, 20 V range, 10 mA I-Limit.
Current Source: <0.1% typical (1 mA step, R
Load
= 10 kΩ, 20 V range).
Range Change Overshoot Overshoot into a fully resistive 100 kΩ load, 10 Hz to 20 MHz BW, adjacent ranges: 250 mV typical
Output Settling Time Time required to reach 0.1% of final value, 20 V range, 100 mA I-Limit: <200 μs typical.
Maximum Slew Rate 0.2 V/μs, 200 V range, 100 mA limit into a 2 kΩ load (typical).
Over Voltage Protection User selectable values, 5% tolerance. Factory default = none.
Voltage Source Noise 10 Hz–1 MHz (RMS): 2 mV typical into a resistive load.
Common Mode Voltage 250 V DC.