- **12 Programmable Timer/Counter Channels:** The AX5500P incorporates **four Intel 8254-compatible programmable interval timer (PIT) chips**, each providing three independent 16-bit counters, for a total of **12 timer/counter channels**. These channels can be configured for event counting, frequency generation, pulse width measurement, or square wave output. - **24 TTL Digital I/O Lines:** The card provides **24 channels of TTL-level digital input/output**, emulating the functionality of an **Intel 8255 Programmable Peripheral Interface (PPI) in Mode 0**. This allows for flexible digital signal interfacing, including control signal monitoring, switch input reading, and device actuation. - **PCI Bus Interface:** Fully compliant with the **PCI local bus standard**, the AX5500P supports plug-and-play configuration and automatic resource allocation, eliminating the need for manual jumper or DIP switch settings. - **Dual Connector Interface:** Equipped with both a **DB37 male connector** and a **50-pin flat cable header**, the card offers versatile connectivity options for external devices, sensors, and control modules. - **Compact Form Factor:** The board measures **175 mm × 97 mm**, allowing installation in standard PCI slots of desktop PCs or industrial computers. - **Industrial-Grade Design:** Built with high-quality components and robust PCB design, the AX5500P ensures long-term reliability and stable performance in demanding industrial environments. - **Software Compatibility:** The card is compatible with standard operating systems supporting PCI devices and can be integrated with various data acquisition and control software platforms.

Manufacturer: Axiom

Category: Counter/Timer PCI

- **Four Independent 24-bit Counters:** Each channel supports up/down counting with a maximum count value of FFFFFFH (16,777,215 in binary). - **Dual Input Modes:** Selectable **photo coupler isolated input** (5–12 VDC) or **TTL-level input** (5 VDC) per channel via software command. - **Two-Phase Signal Support:** Capable of counting quadrature (A/B phase) signals from rotary encoders or linear scales, as well as single-phase pulse inputs. - **Programmable Timer:** Built-in timer generates periodic interrupts at user-defined intervals (1 ms to 200 s). - **Interrupt and Match Output:** Each channel can issue an interrupt or one-shot pulse output when the counter value matches a preset comparison value. - **Digital Filtering:** Adjustable digital filter (0.1 µs to 1056.1 µs) per channel to suppress noise and contact chattering. - **General-Purpose Inputs:** One general-purpose input per channel, available in both TTL and opto-isolated configurations. - **Photo Coupler Isolation:** Provides electrical isolation between external devices and the board, enhancing noise immunity and protecting the host system. - **Software Support:** Bundled with **API-PAC(W32)** driver library for Windows and **API-CNT(LNX)** for Linux, enabling easy integration with programming environments such as Visual C/C++, Visual Basic, Delphi, and gcc. - **LabVIEW Compatibility:** Supported by the **VI-DAQ** library for National Instruments LabVIEW, allowing seamless integration into data acquisition systems. - **Universal PCI Interface:** 32-bit, 33 MHz PCI bus with universal keying (supports both 3.3 V and 5 V signaling environments).

Manufacturer: Contec

Category: Counter/Timer PCI

- **Four independent 24‑bit up/down counters** supporting single‑phase or two‑phase pulse inputs. - **Dual input modes:** differential line‑receiver input and TTL‑level input selectable per channel. - **High‑speed counting:** up to **1 MHz** for both differential and TTL inputs. - **Programmable timer:** allows periodic interrupt generation from **1 ms to 200 s**. - **Surge protection:** differential input section equipped with Zener‑diode surge suppression to prevent damage from voltage spikes. - **Digital filter function:** hardware‑based noise suppression to eliminate chattering and false counts. - **Counter coincidence output:** generates a pulse when a preset count value is reached. - **Interrupt generation:** triggered by count match or timer expiration for real‑time event handling. - **Compact PCI short‑size board:** 176.4 mm (L) × 107.0 mm (H). - **High reliability:** industrial‑grade components, RoHS‑compliant construction. - **Software support:** Windows and Linux drivers (API‑TOOL), and LabVIEW VI‑DAQ library for seamless integration with measurement applications. - **Connector compatibility:** 96‑pin half‑pitch connector compatible with CNT24‑4(PCI) and other CONTEC counter boards.

Manufacturer: Contec

Category: Counter/Timer PCI

- **Four Independent 32‑bit Counters:** Each channel supports up/down counting with 32‑bit resolution, suitable for incremental encoders, linear gauges, or pulse‑output sensors. - **Two‑Phase and Single‑Phase Counting:** Supports A/B/Z phase inputs for quadrature encoders or single‑phase pulse counting with optional gate control. - **High‑Speed Input Capability:** Maximum input frequency of **10 MHz (duty 50%)**, ensuring accurate counting of high‑frequency pulse trains. - **LVTTL Input Compatibility:** Accepts LVTTL‑level signals for direct connection to modern digital sensors and encoders. - **Bus Master Transfer Function:** Enables high‑speed data transfer between the board and PC memory without CPU overhead, improving real‑time performance. - **Low‑Profile PCI Form Factor:** Compact 121.69 mm × 105.68 mm board size, compliant with PCI Low Profile specification. Includes a standard‑height bracket for full‑size PCI slots. - **Programmable Timer:** Built‑in timer selectable from **1 ms to 6553 ms** in 1 ms increments for periodic sampling or timed interrupts. - **Interrupt Generation:** One interrupt line with multiple selectable factors: - Count match - Count error - Sampling factor - Carry/Borrow - Timer event - **Digital Filter Function:** Hardware digital filter prevents false counts due to noise or contact chattering. - **Counter Coincidence and Test Pulse Outputs:** Provides external output signals for synchronization, testing, or triggering external devices. - **Optional Differential Input Conversion:** Can be converted to differential input operation using optional **CTP‑4D** terminal and **CNT‑68M/50M** cable. - **Software Support:** Includes free Windows and Linux drivers (API‑TOOLs) and LabVIEW VI‑DAQ library for easy integration. - **RoHS and Lead‑Free Compliant:** Environmentally friendly design meeting EU RoHS directives.

Manufacturer: Contec

Category: Counter/Timer PCI

- **Eight 32‑bit Up/Down Counters:** Each channel supports two‑phase (A/B/Z) or single‑phase counting with gate control. - **High‑Speed Pulse Input:** Accepts TTL‑level or differential line‑receiver inputs up to 10 MHz (50 % duty). - **Bus‑Master Data Transfer:** Direct memory access (DMA) transfer between board and PC memory at up to 80 MB/s (maximum 133 MB/s) without CPU load. - **Synchronous Control Connector (SCC):** Enables synchronous operation of up to 16 boards (any combination of counter or motion controller types). - **Disconnection Detection:** Detects signal line disconnection during differential input and issues alarm output or interrupt. - **Digital Filter Function:** Programmable input filter suppresses noise and contact chattering for accurate counting. - **Counter Coincidence and Test Pulse Outputs:** Hardware outputs for event signaling and diagnostic testing. - **Interrupt Generation:** One interrupt line with multiple selectable factors (count match, count error, SCC error, carry/borrow, timer). - **Programmable Timer:** 1 – 6553 ms range, selectable in 1 ms increments, for periodic interrupt or timed operations. - **32/32 TTL Digital I/O:** Provides 32 inputs and 32 outputs for general‑purpose digital control. - **Surge Protection:** Input interface equipped with Zener diodes to protect against voltage surges and transient currents. - **Software Support:** Windows and Linux drivers (API‑TOOLs), and LabVIEW VI‑DAQ library for seamless integration. - **RoHS Compliant:** Environmentally friendly, lead‑free construction.

Manufacturer: Contec

Category: Counter/Timer PCI

- **8 Independent 16-bit Timer/Counters:** Each channel operates independently, allowing simultaneous timing and counting operations. - **2 Cascaded 32-bit Timer/Counters:** Two 16-bit counters can be cascaded to form 32-bit counters for extended range and precision. - **16 TTL-Level Digital I/O Channels:** Configurable as 16 inputs or 8 inputs and 8 outputs, supporting flexible digital control. - **High-Speed Operation:** Supports counting frequencies up to **10 MHz**, suitable for high-speed pulse and frequency measurement. - **Programmable Clock Sources:** Two on-board internal clock sources (0.5 MHz, 1 MHz, 2 MHz, 4 MHz) and eight external clock inputs for flexible timing control. - **Interrupt Management:** Jumper- and software-selectable interrupt sources with four interrupt channels (two counter-based and two digital input-based). - **Comprehensive Software Support:** Drivers for Windows 98/NT/2000/XP and LabVIEW 6.0/7.0, with sample programs in VB, VC, BCB, and Delphi. - **PCI Bus Interface:** Fully compliant with PCI specifications, supporting plug-and-play configuration and automatic resource allocation. - **EEPROM-Based Board Identification:** Each card includes a unique serial number stored in EEPROM for easy identification and configuration. - **Diagnostic Utility:** PCI Scan Utility for resource monitoring, serial number identification, and troubleshooting. - **Compact Design:** 185 mm × 110 mm PCB form factor for easy integration into standard PC chassis. - **RoHS Compliant:** Environmentally friendly design meeting Restriction of Hazardous Substances standards.

Manufacturer: Axiom

Category: Counter/Timer PCI

- **Ten Independent 16-bit Timer/Counters:** Each counter can operate independently or be cascaded for extended bit-width timing (up to 160-bit when all are cascaded). - **Cascaded 32-bit Timer:** Two counters (channels 11 and 12) are hardware-cascaded to form a 32-bit timer with a fixed 8 MHz base clock. - **Flexible Clock Source Selection:** Each counter can select its clock source from: - On-board 8 MHz oscillator - External clock input (up to 10 MHz) - Output of the previous counter (for cascading) - Cascaded 32-bit timer output - **Programmable De-bounce Filters:** Eleven channels of programmable de-bounce filters for external clock and interrupt inputs, with glitch rejection and programmable de-bounce clock up to 2 MHz. - **Dual Interrupt System:** Two interrupt sources—external interrupt input and cascaded counter output (counter #12)—allow flexible event handling and watchdog timer functionality. - **Digital I/O Capability:** - 8 TTL-compatible digital input channels - 8 TTL-compatible digital output channels - Programmed I/O data transfer mode - **High Reliability and Noise Immunity:** De-bounce filtering and TTL-level compatibility ensure stable operation in industrial environments. - **Plug-and-Play PCI Interface:** Fully compliant with PCI Local Bus Specification Rev. 2.0, supporting automatic resource allocation by BIOS. - **Software Support:** Comprehensive driver and library support for multiple operating systems and development environments, including LabVIEW®, HP-VEE™, and ActiveX (DAQBench™).

Manufacturer: Adlink Technology Inc.

Category: Counter/Timer PCI