Measurement-computing USB-3102 Instrukcja Użytkownika Pobierz pdf (Strona 20)

Chapter 4

Specifications

Typical for 25 °C unless otherwise specified.

Specifications in italic text are guaranteed by design.

Analog voltage output

Table 1. Analog voltage output specifications

Parameter

Conditions

Specifications

Digital to Analog converter

DAC8554

Number of channels

(Note 1)

Resolution

16 bits

Output ranges

Calibrated

±10 V, 0 to 10 V

Software configurable

Un-calibrated

±10.2 V, -0.04 to 10.08 V

Software configurable

Output transient

±10 V to (0 to 10 V) or

(0 to 10 V) to ±10 V range

selection.

(Note 2)

Duration: 5 uS typ.

Amplitude: 5V p-p typ.

Host PC is reset, powered on,

suspended or a reset command is

issued to device.

(Note 3)

Duration: 2 S typ.

Amplitude: 2V p-p typ.

Initial power on

Duration: 50 mS typ.

Amplitude: 5V peak typ.

Differential non-linearity

(Note 4)

Calibrated

±1.25 LSB typ.

-2 LSB to +1 LSB max.

Un-calibrated

±0.25 LSB typ.

±1 LSB max.

Output current

VOUTx pins

±3.5 mA typ.

Output short-circuit protection

VOUTx connected to AGND

Indefinite

Output coupling

Power on and reset state

DACs cleared to zero-scale: 0 V, ±50 mV typ.

Output range: 0-10 V

Output noise

0 to 10 V range

14.95 µVrms typ.

±10 V range

31.67 µVrms typ.

Settling time

to 1 LSB accuracy

25 µS typ.

Slew rate

0 to 10 V range

1.20 V/µS typ.

±10 V range

1.20 V/µS typ.

Throughput

Single-channel

100 Hz max., system dependent

Multi-channel

100 Hz/#ch max., system dependent

Note 1: Each of the four DAC8554 outputs controls a VOUTx and IOUTx channel-pair simultaneously.

So, for example, when writing to channel VOUT0, the associated IOUT0 channel will also be

updated. Conversely, when writing to channel IOUT0, the associated VOUT0 channel is also

updated. Unused VOUTx and IOUTx output channels should be left disconnected.

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