Description
NI CPCI-3840AH
Technical Specifications Processor: Intel Pentium M low-power processor; memory support up to 2 GB DDR SDRAM; dual Gigabit Ethernet; CompactFlash, IDE and SATA storage interfaces; video output routed to rear transition module; operating temperature range -40 ℃ to +70 ℃; conformal coating on PCB circuits; 3U CompactPCI mechanical form.
Functional Features Extended temperature component screening; PCB conformal coating prevents condensation and dust corrosion; identical software compatibility with standard CPCI-3840; supports real-time Linux and embedded Windows; isolated Ethernet transceivers improve EMC performance in noisy field environments.
Application Scenarios Outdoor remote monitoring stations, railway vehicle measurement racks, military ground test equipment, offshore platform data acquisition and cold-climate industrial control systems.
Material Composition FR4 industrial PCB with acrylic conformal coating; wide-temperature grade memory and processor components; aluminum front panel; gold-plated CompactPCI backplane connector; sealed rear transition cable connectors.
Structural Characteristics 3U CompactPCI card mechanical footprint matching CPCI-3840; front panel status LED array; internal thermal vias optimized for heat spreading; component selection avoids commercial grade parts with narrow temperature rating.
Working Principle Identical computing and bus operation as standard CPCI-3840. Conformal coating and wide-temperature components maintain stable memory, clock and bus operation under extreme low and high ambient temperature. Measurement and control software runs unchanged from standard model.
Installation Requirements Install in forced-air cooled CompactPCI chassis; verify chassis cooling airflow meets thermal budget at extreme ambient temperature; use sealed cable glands for external wiring; single-point ground chassis protective earth.
Operation Notes Allow thermal stabilization after cold start before high-precision measurement; avoid mechanical shock during power-on operation; check conformal coating integrity after board removal and handling.
