Measurement-computing PCI-DAS6013 Uživatelský manuál stáhnout pdf (Strana 34)

PCI-DAS6013 and PCI-DAS6014 User's Guide Specifications

Table 5. Analog output absolute accuracy specifications

Range

Absolute Accuracy

±10 V

±12.6 LSB

Table 6. Absolute accuracy components specifications

Range

% of Reading

(1 year)

Offset

(mV)

Temp Drift

(%/DegC)

Absolute Accuracy at FS (mV)

±10 V

±0.02

±1.9

±0.0005

±3.84

Each PCI-DAS6014 is tested at the factory to assure the board’s overall error does not exceed the absolute

accuracy specification listed in Table 5.

Table 7. Relative accuracy specifications

Range

Relative Accuracy

±10 V

±3.0 LSB, typ

Relative accuracy is defined as the measured deviation from a straight line drawn between measured endpoints

of the transfer function.

Analog output pacing and triggering

DAC pacing

(software programmable)

Internal counter – ASIC. Selectable time base:

 Internal 40 MHz, 50 ppm stability.

 External source via AUXIN<5:0>, software selectable.

External convert strobe: D/A UPDATE

Software paced

DAC gate source

(software programmable)

External digital: D/A START TRIGGER

Software gated

DAC gating modes

External digital: Programmable, active high or active low, level or edge

DAC trigger sources

External digital: D/A START TRIGGER

Software triggered

DAC triggering modes

External digital: Software-configurable for rising or falling edge.

DAC pacer out

Available at user connector: D/A PACER OUT

RAM buffer size

16 K samples

Data transfer

DMA

Programmed I/O

Update DACs individually or simultaneously, software selectable.

DMA modes

Demand or non-demand using scatter gather.

Waveform generation

throughput

10 kS/s max per channel, 2 channels simultaneous

Analog input / output calibration

Recommended warm-up time

15 minutes

Calibration

Auto-calibration, calibration factors for each range stored on board in non-volatile

RAM.

Onboard calibration reference

DC Level: 10.000 V ± 5 mV. Actual measured values stored in EEPROM.

Tempco: 5 ppm/°C max, 2 ppm/°C typical

Long-term stability: 15 ppm, T = 1000 hrs, non-cumulative

Calibration interval

1 year

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 40 41 42

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