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PCT-8424, PCT-8425, PCT-8426

The PCT-8424/25/26 card is an additional type of multifunctional DAQ PCI card series offering isolated digital inputs equipped with counters/timers and bidirectional digital ports.

The card provides 24 isolated digital inputs equipped with set of prorgammable counters and assigned timers with capture register. While counters provide pulse counting, timers with capture registers measure time between last two pulses and elapsed time since the last pulse. All values (or the selected only) mentioned above can be captured simultaneously.

The card also provides three 8-bit bidirectional digital ports, software configurable as input or output. Moreover, the power-up configuration of DIO ports can be easily modified by the software utility and stored into onboard EEPROM memory.

The card also includes IRQ logic with interrupt sources derived not only from the internal timer, but from rising or falling edge of each digital port signal (i.e. 96 individually programmable interrupt sources).

The PCT-842x card is based on a FPGA unified core providing implementation of PCI Express bus and all peripheral circuitry, e.g. solution that gives maximum control and supervision over full functionality. High concentration of control algorithms within FPGA allows to add or modify functions without redesign the board.

All DAQ PCI Express cards are equipped CardID - two segment DIP switch that allows to recognise up to 4 cards (especially when installing multiple cards of the same type).

PCT-8424, PCT-8425 and PCT-8426 diferences

PCT-8424 - digital inputs intended for TTL/HC signals
PCT-8425 - digital inputs intended for driving by "PNP" outputs with 24V signal level
PCT-8426 - digital inputs intended for driving by "NPN" outputs with 24V signal level

All other features including isolation of digital input block are identical.

Standard and low-profile version

The cards are supplied in two versions - standard as PCT-842x and as PCT-842x/LP. Except for the different I/O connectors (see the following paragraphs), all other features of both versions are identical.

In the case of a standard version, isolated digital inputs are accessible via the D-Sub 25 connector, first digital port via the D-Sub 9 connector then (PCE-8019 cable); both of them are located on the card mounting bracket. Next two digital ports are accessible via the PCE-16xx series adaptor (not included), using the card mounting bracket with two D-Sub 25 or D-Sub 9 connectors.

In the case of a low-profile version, isolated digital inputs are accessible via the D-Sub 25 connector located on the card mounting bracket. All three digital ports are accessible via the PCE-8025/LP adaptor (not included), using the card mounting bracket with one D-Sub 25.

Delivery details

The product packet includes the card and InfoCD with drivers and user manual.

Specifications

Type PCT-8424 (standard version)
PCT-8424/LP (low-profile version)
PCT-8425 (standard version)
PCT-8425/LP (low-profile version)
PCT-8426 (standard version)
PCT-8426/LP (low-profile version)
Number and type of counters 24x 32-bit unidirectional with assigned timer
Counter inputs frequency 2MHz max. (PCT-8424)
200kHz max. (PCT-8425)
200kHz max. (PCT-8426)
Counter inputs signal level see isolated digital inputs description below
Number of assigned timer 24x 32-bit with capture register
Number of isolated
digital inputs
24
Isolated digital inputs
signal level
TTL/HC (PCT-8424)
24V with GND as a common signal (PCT-8425)
24V with +24V as a common signal (PCT-8426)
Isolated digital inputs
overvoltage protection
±10V continuously (PCT-8424)
±40V continuously (PCT-8425)
±40V continuously (PCT-8426)
Isolated digital inputs
isolation voltage
1kVDC (600VDC when ESD-X1 used)
Isolation protection Surge arrester CG5-600L
(ESD-X1 option)
Number of digital inputs 24/16/8/0
(three 8-bit bidirectional ports, see digital outputs)
Digital inputs signal level TTL/HC
Number of digital outputs 0/8/16/24
(three 8-bit bidirectional ports, see digital inputs)
Digital outputs signal level TTL/HC
Interrupt sources internal timer 1÷255ms
rising/falling edge of each digital port signal
Bus type PCI Express (x1, Gen 1)
I/O and MEM address,
Interrupt channels
assigned by PnP PCI BIOS
Dimensions approx. 56x128 mm
(low-profile version, or main board of standard version, see pictures above)