- **48 Programmable Digital I/O Lines:** Configurable as input or output in two groups of 24 channels each. - **8255 Mode 0 Compatibility:** Emulates two Intel 8255 PPIs for flexible I/O configuration. - **High Output Drive Capability:** Up to 24 mA sink and 15 mA source per channel. - **Low Input Loading:** 0.2 mA at 0.4 V ensures minimal signal distortion. - **Integrated Event Counter:** One 16‑bit programmable counter for event counting up to 2 MHz. - **Programmable Timer Pacer:** One 32‑bit timer (two cascaded 16‑bit counters) with selectable 32.768 kHz or 2 MHz clock sources. - **Interrupt Support:** Selectable IRQ3–IRQ15 (9 levels) for event, timer, or input‑triggered interrupts. - **Opto‑22 Connector Compatibility:** Two 50‑pin connectors (CN1, CN2) with standard Opto‑22 pinout for easy integration with industrial I/O modules. - **Compact ISA Form Factor:** Occupies only two consecutive I/O addresses, allowing multiple cards per system. - **TTL Logic Compatibility:** All I/O lines are TTL‑level compatible using 74LS244 buffer/driver circuits. - **Software Support:** Includes DOS and Windows drivers, C/C++ libraries, and LabVIEW driver (ACLS‑LVIEW). - **Flexible Jumper Configuration:** Adjustable base address, pull‑up/pull‑down resistors, interrupt levels, and clock sources.

Manufacturer: Adlink Technology Inc.

Category: Counter/Timer ISA

- **Multi-Function Counter/Timer/Pulse Generator:** Provides 10 independent channels of 16-bit counting and timing functionality, enabling simultaneous measurement and control of multiple signals. - **Dual AM9513A Timing Devices:** Equipped with two AMD AM9513A programmable timer/counter chips, offering flexible configuration for frequency measurement, event counting, pulse width modulation, and time interval generation. - **High-Speed Operation:** Supports maximum input frequency up to **7 MHz**, ensuring accurate counting and timing for high-speed digital signals. - **Interrupt Support:** One programmable interrupt request (IRQ) selectable from **IRQ 3–7, 9–12, 14, or 15**, allowing flexible integration with PC interrupt architecture. - **Digital I/O Capability:** Includes **16 TTL-level inputs** and **16 TTL-level outputs**, enabling direct interface with external logic-level devices for control and monitoring. - **Compact Form Factor:** Board dimensions of **160 mm × 122 mm**, suitable for standard PC expansion slots. - **Connector Interface:** Two **37-pin D-sub female connectors** provide robust and standardized external connectivity for signal I/O. - **High Precision and Stability:** 16-bit resolution counters ensure fine granularity in timing and counting operations, suitable for precision measurement and control. - **Industrial Reliability:** Designed for continuous operation in industrial environments, with robust electrical design and high noise immunity.

Manufacturer: Contec

Category: Counter/Timer ISA