Measurement-computing PCI-DAS6071 Bedienungsanleitung PDF herunterladen (Seite 40)

PCI-DAS6071 User's Guide Specifications

Analog output pacing and triggering

Table 14. External reference input (D/A EXTREF)specifications

Parameter

Specification

DAC pacing

(software programmable)

Internal counter – ASIC. Selectable time base:

 Internal 40 MHz

 External Source via AUXIN<5:0>, SW selectable.

External convert strobe: D/A UPDATE

Software paced

DAC gate source

(software programmable)

External digital: D/A START TRIGGER

External analog: ATRIG input

CH0 IN through CH63 IN

Software gated

DAC gating modes

External digital:

 Programmable, active high or active low, level or edge

External analog: Refer to Analog trigger on page 41

DAC trigger sources

External digital: D/A START TRIGGER

External analog: ATRIG input

CH0 IN through CH63 IN

Software triggered

DAC triggering modes

External digital:

 Software-configurable for rising or falling edge.

External analog: Refer to Analog trigger on page 41

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

1 MS/s max per channel, 2 channels simultaneous

Analog output external reference input (D/A EXTREF)

Table 15. External reference input (D/A EXTREF) specifications

Parameter

Specification

Range

±11 V

Overvoltage protection

±25 V powered on, ±15V powered off

Input impedance

10 kΩ

Bandwidth (–3 dB)

1 MHz

Gain Error – EXTREF mode

0 to 0.5%; not adjustable.

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 48 49

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