Introduction and Specifications
Specifications
1
1-27
Table 1-4. 2635A Specifications (cont)
Ohms Input
Range
Resolution
Typical Full Maximum Current Maximum Open
Slow Fast
Scale Voltage Through Unknown Circuit Voltage
300Ω 10 mΩ 0.1Ω 0.22V 1 mA 3.2V
3 kΩ 0.1Ω 1Ω 0.25V 110 µA1.5V
30 kΩ 1Ω 10Ω 0.29V 13 µA1.5V
300 kΩ 10Ω 100Ω 0.68V 3.2 µA3.2V
3 MΩ 100Ω 1 kΩ 2.25V 3.2 µA3.2V
10 MΩ 1 kΩ 10 kΩ 2.72V 3.2 µA3.2V
4-Wire Accuracy ±(% ± Ω)
Range
18°C to 28°C0°C to 60°C
90 Days, Slow 1 Year, Fast 1 Year, Fast 1 Year, Fast 1 Year, Fast
300Ω 0.056% + 20 mΩ 0.060% + 20 mΩ 0.060% + 0.2Ω 0.175% + 20 mΩ 0.175% + 0.2Ω
3 kΩ 0.053% + 0.2Ω 0.057% + 0.2Ω 0.057% + 2Ω 0.172% + 0.2Ω 0.172% + 2Ω
30 kΩ 0.055% + 2Ω 0.059% + 2Ω 0.059% + 20Ω 0.176% + 2Ω 0.176% + 20Ω
300 kΩ 0.053% + 20Ω 0.057% + 20Ω 0.057% + 200Ω 0.184% + 20Ω 0.184% + 200Ω
3 MΩ 0.059% + 200Ω 0.063% + 200Ω 0.063% + 2 kΩ 0.203% + 200Ω 0.203% + 2 kΩ
10 MΩ 0.115% + 2 kΩ 0.120% + 2 kΩ 0.200% + 30 kΩ 0.423% + 2 kΩ 0.423% + 30 kΩ
2-wire Accuracy
Not specified
Input Protection
300V dc or ac rms on all ranges
Crosstalk Rejection
Refer to "Crosstalk Rejection" at the end of Table 1-3.
Frequency Inputs
Frequency Range
15 Hz to greater than 1 MHz
Range
Resolution Accuracy ±(% ± Hz)
Slow Fast Slow Fast
15 Hz - 900 Hz
9 kHz
90 kHz
900 kHz
1 MHz
0.01 Hz
0.1 Hz
1 Hz
10 Hz
100 Hz
0.1 Hz
1 Hz
10 Hz
100 Hz
1 Hz
0.05% + 0.02 Hz
0.05% + 0.1 Hz
0.05% + 1 Hz
0.05% + 10 Hz
0.05% + 100 Hz
0.05% + 0.2 Hz
0.05% + 1 Hz
0.05% + 10 Hz
0.05% + 100 Hz
0.05% + 1 kHz
