Measurement-computing USB-2408 Series Instrukcja Użytkownika Pobierz pdf (Strona 27)

USB-2408 Series User's Guide Specifications

Parameter

Conditions

Specifications

Power on and reset state

DACs cleared to zero-scale: 0 V,

±50 mV

Output noise

60 µV

rms

(BW=1.5 KHz)

Settling time

To rated accuracy, 10 V step

75 µS

Slew rate

1.0 V/µs

Throughput

Single-channel

1000 S/s max, system-dependent,

0.01 S/s min

Multi-channel

1000 S/s / #ch max, system-

dependent, 0.01 S/s min

Table 14. Calibrated absolute accuracy specifications

Range

Accuracy (±LSB)

±10 V

16.0

Table 15. Calibrated absolute accuracy components specifications

Range

% of reading

Offset (±mV)

Temp drift (%/°C)

Absolute accuracy at FS (±mV)

±10 V

±0.0183

1.831

0.00055

3.661

Table 16. Relative accuracy specifications

Range

Relative accuracy (±LSB)

±10 V

4.0 typ

Analog input/output calibration

Table 17. Analog input/output calibration specifications

Parameter

Specifications

Recommended warm-up time

45 minutes min

Calibration

Firmware calibration

Calibration interval

1 year

AI calibration reference

+10.000 V, ±5 mV max. Actual measured values stored in EEPROM

Tempco: 5 ppm/°C max

Long term stability: 30 ppm/1000 hours

AO calibration procedure

(USB-2408-2AO only)

The analog output pin is internally routed to the analog input pin.

AOUTx readback

(USB-2408-2AO only)

Each AOUTx output can be independently measured by the onboard A/D converter.

Software-selectable

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