Digital input / output. Measurement Specialties PCI-2513

PCI-2513 User's Guide Specifications

Note 2: Noise reflects 10,000 samples at 1 MHz, typical, differential short, using CA-68-3S cable.

Digital input / output

Table 3. Digital input/output specifications

Number of I/O

Ports

Input scanning mode

Configuration

Input protection

Input high

Input low

Output high

Output low

24

Three banks of eight.

Each port is programmable as input or output

Asynchronous, under program control at any time relative to input scanning

10 kΩ pull-up to +5 V, 20 pf to analog common

±15 kV ESD clamp diodes

+2.0 V to +5.0 V

0 to 0.8 V

>2.0 V

<0.8 V

Output current

Digital input pacing

Digital output pacing

Output 12 mA per pin, 200 mA total continuous

Onboard clock, external input scan clock (XAPCR)

Four programmable sources:

 Onboard output scan clock, independent of input scan clock

 Onboard input scan clock

 External output scan clock (XDPCR), independent of external input scan clock (XAPCR)

 External input scan clock (XAPCR)

Digital input trigger sources and modes

Refer to Table 7

Digital output trigger sources Start of input scan

Data transfer

Sampling/update rate

Pattern generation output

DMA

12 MHz maximum

Two of the 8-bit ports can be configured for 16-bit pattern generation. The pattern can also be updated synchronously with an acquisition at up to 12 MHz.

Counters

Counter inputs can be scanned based on an internal programmable timer or an external clock source.

Channels

Resolution

Input frequency

Input signal range

Input characteristics

Trigger level

Minimum pulse width

De bounce times

Time-base accuracy

Counter read pacer

Trigger sources and modes

Programmable mode

Counter mode options

Table 4. Counter specifications

Four independent

32 bits

20 MHz maximum

–5 V to 10 V

10 k pull-up, ±15 kV ESD protection

TTL

25 ns high, 25 ns low

16 selections from 500 ns to 25.5 ms, positive or negative edge sensitive, glitch detect mode or debounce mode

30 ppm (0 °C to 50 °C)

Onboard input scan clock, external input scan clock (XAPCR)

Refer to Table 7

Counter

Totalize, clear on read, rollover, stop at all Fs, 16- or 32-bit, any other channel can gate the counter

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