Measurement-computing USB-3101 Manual de usuario descargar pdf (Pagina 19)

USB-3101 User's Guide Specifications

Note 2: The duration of this particular output transient is highly dependent on the enumeration process of

the host PC. Typically the output of the USB-3101 is stable after 2 seconds

Note 3: The maximum differential non-linearity specification applies to the entire 0 to 70 °C temperature

range of the USB-3101. This specification also accounts for the maximum errors due to the

software calibration algorithm (in Calibrated mode only) and the DAC8554 digital to analog

converter non-linearities.

Table 2. Absolute accuracy specifications – calibrated output

Range

Accuracy (±LSB)

±10 V

14.0

0 to 10 V

22.0

Table 3. Absolute accuracy components specifications – calibrated output

Range

% of reading

Offset (±mV)

Temp drift (%/°C)

Absolute accuracy at FS (±mV)

±10 V

±0.0183

1.831

0.00055

3.661

0 to 10 V

±0.0183

0.915

0.00055

2.746

Table 4. Relative accuracy specifications

Range

Relative accuracy (±LSB)

±10 V , 0 to 10 V

4.0 typ.

12.0 max.

Analog output calibration

Table 5. Analog output calibration specifications

Parameter

Conditions

Specifications

Recommended warm-up time

15 minutes min.

On-board precision reference

DC level: 5.000 V ±1 mV max.

Tempco: ±10 ppm/°C max.

Long term stability: ±10 ppm/SQRT(1000 hrs)

Calibration method

Software calibration

Calibration interval

1 year

Digital input/output

Table 6. Digital I/O specifications

Digital logic type

CMOS

Number of I/O

Configuration

Independently configured for input or output

Pull-up/pull-down configuration

(Note 4)

User configurable

All pins floating (default)

Digital I/O input loading

TTL (default)

47K ohms (pull-up/pull down configurations)

Digital I/O transfer rate (system paced)

System dependent, 33 to 1000 port reads/writes or single bit reads/writes per

second.

Input high voltage

2.0 V min, 5.5 V absolute max

Input low voltage

0.8 V max, –0.5 V absolute min

Output high voltage (IOH = –2.5 mA)

3.8 V min

Output low voltage (IOL = 2.5 mA)

0.7 V max

Power on and reset state

Input

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Measurement-computing USB-3101 Manual de usuario Pagina 19

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