Measurement-computing USB-202-OEM Manuale Utente Scaricare il pdf (Pagina 15)

USB-202-OEM User's Guide Specifications

Noise performance

For the peak to peak noise distribution test, the input channel is connected to AGND at the input terminal block,

and 12,000 samples are acquired at the maximum throughput.

Table 3. Noise performance specifications

Range Counts LSBrms

±10 V 5 0.76

Analog input calibration

Table 4. Analog input calibration specifications

Parameter Specification

Recommended warm-up time 15 minutes min

Calibration method Factory

Calibration interval 1 year

Analog output

Table 5. Analog output specifications

Parameter Condition Specification

Resolution

12 bits, 1 in 4,096

Output range

0 V to 5.0 V

Number of channels

Throughput (Note 4) Software paced 250 S/s single channel typ, PC dependent

Power on and reset voltage

Initializes to 000h code

0V, ±10 mV

Output drive Each D/A OUT 5 mA, sourcing

Slew rate

0.8 V/ µs typ

Note 1: Maximum throughput when scanning is machine dependent.

Table 6. Analog output accuracy, all values are (±); accuracy tested at no load

Range Accuracy (LSB)

0 V to 5.0 V 5.0 typ, 45.0 max

Table 7. Analog output accuracy components, all values are (±)

Range % of FSR Gain Error at FS (mV) Offset (mV)

(Note 5)

Accuracy at FS (mV)

0 V to 5.0 V 0.08 typ, 0.72 max 4.0 typ, 36.0 max 1.0 typ, 9.0 max 5.0 typ, 45.0 max

Note 2: Zero-scale offsets may result in a fixed zero-scale error producing a "dead-band” digital input code

region. In this case, changes in digital input code at values less than 0x040 may not produce a

corresponding change in the output voltage. The offset error is tested and specified at code 0x040.

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Measurement-computing USB-202-OEM Manuale Utente Pagina 15