Measurement-computing USB-3101 Manuel d'utilisateur télécharger pdf (Page 18)

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

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 1)

Duration: 5 µS typ.

Amplitude: 5V p-p typ.

Host PC is reset, powered on,

suspended or a reset command is

issued to device.

(Note 2)

Duration: 2 S typ.

Amplitude: 2V p-p typ.

Initial power on

Duration: 50 mS typ.

Amplitude: 5V peak typ.

Differential non-linearity

(Note 3)

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: 0-10V

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: The USB-3101 output voltage level defaults to 0V whenever the output voltage range is

reconfigured.

The USB-3101 output voltage level will also default to 0V:

1) Whenever the host PC is reset, shut down or suspended.

2) If a reset command is issued to the device.

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Measurement-computing USB-3101 Manuel d'utilisateur Page 18

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