National Instruments 6008 Manual De Usuario
© National Instruments Corporation
21
NI USB-6008/6009 User Guide and Specifications
Timing accuracy..................................... 100 ppm of actual sample rate
Input range
Single-ended
................................... ±10 V
Differential
...................................... ±20 V
1
,
±10 V, ±5 V, ±4 V,
±2.5 V, ±2 V, ±1.25 V, ±1 V
Working voltage
..................................... ±10 V
Input impedance ..................................... 144 k
Ω
Overvoltage protection
........................... ±35
Trigger source ........................................ Software or external digital
trigger
System noise
2
Single-ended
±10 V range ............................. 5 mVrms
Differential
±20 V range............................. 5 mVrms
±1 V range ............................... 0.5 mVrms
Absolute accuracy at full scale, single ended
Absolute accuracy at full scale, differential
3
1
±20 V means that |AI+ – (AI–)| <= 20V. However, AI+ and AI– must both be within ±10V of GND. Refer to the
for more information.
2
System noise measured at maximum sample rate.
Range
Typical at 25 °C
(mV)
Maximum over Temperature
(mV)
±10
14.7
138
3
Input voltages may not exceed the working voltage range.
Range
Typical at 25 °C
(mV)
Maximum over Temperature
(mV)
±20
14.7
138
±10
7.73
84.8
±5
4.28
58.4
±4
3.59
53.1
±2.5
2.56
45.1