Measurement-computing USB-2527 Manual de usuario descargar pdf (Pagina 54)

USB-2527 User's Guide Specifications

Note 2: Noise reflects 10,000 samples at 1 MHz, typical, differential short

Thermocouples

Table 3. TC types and accuracy (Note 3)

TC type

Temperature range (°C)

Accuracy (±°C)

Noise typical (±°C)

-200 to + 760

1.7

0.2

-200 to + 1200

1.8

0.2

-200 to + 400

1.8

0.2

-270 to + 650

1.7

0.2

-50 to + 1768

4.8

1.5

-50 to + 1768

4.7

1.5

-270 to + 1300

2.7

0.3

+300 to + 1400

3.0

1.0

Note 3: Assumes 16384 oversampling applied, CMV = 0.0V, 60 minute warm-up, still environment, and

25°C ambient temperature; excludes thermocouple error; TC

= 0° C for all types except B

(1000°C), PS-9V1AEPS-2500 power supply for external power.

Analog outputs

Analog output channels can be updated synchronously relative to scanned inputs, and clocked from either an

internal onboard clock, or an external clock source. Analog outputs can also be updated asynchronously,

independent of any other scanning system.

Table 4. Analog output specifications

Channels

Resolution

16-bits

Data buffer

PC-based memory

Output voltage range

±10 V

Output current

±1 mA; sourcing more current (1 to 10mA) may require a PS-9V1AEPS-2500 power supply

option

Offset error

±0.0045 V maximum

Digital feed-through

<10 mV when updated

DAC analog glitch

<12 mV typical at major carry

Gain error

±0.01%

Coupling

Update rate

1 MHz maximum, resolution 20.83 ns

Settling time

2 µs to rated accuracy

Pacer sources

Four programmable sources:

 Onboard output scan clock, independent of scanning input clock

 Onboard input scan clock

 External output scan clock (XDPCR), independent of external input scan clock (XAPCR)

 External input scan clock (XAPCR)

Trigger sources

Start of input scan

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 ... 63 64

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