Input noise, Excitation level, Power – Measurement Computing USB-2404-UI User Manual
Page 18
USB-2404-UI User's Guide
Specifications
18
Full-bridge, ±62.5 mV/V
±3
±20
Full-bridge, ±7.8 mV/V
±3
±20
Input noise
Table 5. Input noise (ppm of rangerms) specifications
Mode, range
Conversion time
High speed
Best of 60 Hz
rejection
Best of 50 Hz
rejection
High resolution
Voltage, ±60 V
7.6
1.3
1.3
0.5
Voltage, ±15 V
10.8
1.9
1.9
0.7
Voltage, ±4 V
10.8
2.7
2.7
1.3
Voltage, ±1 V
7.6
1.3
1.3
0.5
Voltage/Thermocouple, ±125 mV
10.8
1.9
1.9
1.0
Current, ±25 mA
10.8
1.9
1.9
1.0
4-wire and 2-wire resistance, 10 k
Ω
4.1
1.3
0.8
0.3
4-wire and 2-wire resistance, 1 k
Ω
7.1
1.8
1.2
0.7
4-wire and 3-wire RTD, Pt 1000
7.6
1.7
1.1
0.4
4-wire and 3-wire RTD, Pt 100
10.8
1.9
1.9
0.9
Quarter-bridge, 350
Ω
5.4
1.0
1.0
0.7
Quarter-bridge, 120
Ω
5.4
1.0
1.0
0.7
Half-bridge, ±500 mV/V
3.8
0.5
0.5
0.2
Full-bridge, ±62.5 mV/V
5.4
1.0
1.0
0.8
Full-bridge, ±7.8 mV/V
30
4.7
4.7
2.3
Excitation level
Table 6. Half-bridge and full-bridge mode excitation level specifications
Measurement conditions
Load resistance (
Ω)
Excitation (V)
Half-bridge
700
2.5
Half-bridge
240
2.0
Full-bridge
350
2.7
Full-bridge
120
2.2
Table 7. Resistance, RTD, and quarter-bridge mode excitation level specifications
Load resistance (
Ω)
Excitation (mV)
120
50
350
150
1,000
430
10,000
2,200
Power
Table 8. Power specifications
Parameter
Specification
Current consumption from USB
500 mA, maximum