Measurement-computing Personal Daq/3000 Series Manual de usuario descargar pdf (Pagina 68)

7-2 Specifications

937492 Note: Specifications are subject to change without notice.

Analog Inputs

Channels: 16 single-ended or 8 differential. Programmable on a

per-channel basis as single-ended or differential.

Expansion: An additional 48 analog inputs per module via optional PDQ30 module.

Expansion channel features are identical to those of the main channels.

Expansion Connector: 25-pin DSUB, female

Over-Voltage Protection: ±30V without damage

Voltage Measurement Speed: 1 µs per channel

Ranges: Software or sequencer selectable on a per-channel basis.

±10V, ±5V, ±2V, ±1V, ±0.5V, ±0.2V, ±0.1V

Input Impedance: 10MΩ single-ended; 20MΩ differential

Total Harmonic Distortion: -80 dB, typical for ±10V range, 1 kHz fundamental

Signal to Noise and Distortion: 72 dB, typical for ±10V range, 1 kHz fundamental

Bias Current: 40 pA typical (0°C to 35°C)

Crosstalk: -75 dB DC to 60 Hz; -65 dB @10 kHz, typical

Common Mode Rejection: -70 dB typical DC to 1 kHz

Maximum Usable Input Voltage

+ Common Mode Voltage

Ranges Maximum

(CMV + V

)

5, 10V 10.5V

0.1, 0.2, 0.5, 1, 2V 6.0V

Voltage Measurement Noise vs. Oversampling

0.01

0.10

1.00

10.00

100.00

1 10 100 1000 10000 100000

Oversampling Rate

Noise (RMS Counts), Typical

100mV

10V

500mV

200mV

Range

Note: does not include noise due to quantizing of returned data

1 2 ... 63 64 65 66 67 68 69 70 71 72 73 ... 85 86

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Measurement-computing Personal Daq/3000 Series Manual de usuario Pagina 68