Choosing a high-frequency data acquisition recorder usually means deciding between channel count and sample rate. Do you need 16 inputs at 1 MHz, or 4 inputs at 102.4 kHz? The National Instruments High Frequency Data Acquisition System at USD 1,500 sidesteps that choice by bundling both boards into one used desktop package.
Quick verdict: If your work calls for a 16-channel general-purpose A/D board and a separate 4-channel board in a single system, this National Instruments bundle is a direct fit. It also includes the host desktop, monitor, keyboard, and mouse, so the listed price covers a complete setup rather than bare hardware.
Who it suits: This package is aimed at engineers and technicians who need multiple acquisition paths on a National Instruments platform. The PCI-6251 board provides 16 channels at 1 MHz, suited to capturing many signals at moderately high speed. The PCI-4474 board adds 4 channels at 102.4 kHz, a good match for lower-frequency measurements that need dedicated inputs. With the BNC-2110 signal box and cable included, connecting BNC-terminated signals is part of the deal. The rest of the bundle-a ViewSonic VA705-LED monitor, a Kensiko keyboard, a Microsoft-compatible mouse, an AMD Athlon 64 X2 Dual Core 4200+ host, and Windows XP-means you are not hunting for peripherals separately.
What stands out: The defining feature is the dual-board layout. Instead of choosing between speed and channel count, you get both. The 1 MHz / 16-channel path handles fast, multi-signal captures, while the 102.4 kHz / 4-channel path offers a separate input group for lower-frequency work. The BNC-2110 signal box is a practical bridge between your sensors and the boards. For USD 1,500, the bundle also includes a complete desktop environment, which is a concrete advantage if you want a dedicated acquisition station.
Meaningful trade-offs: The system is used, and the host PC is dated by any modern standard. The AMD Athlon 64 X2 Dual Core 4200+ and Windows XP are old enough that you should plan around limited host performance and an outdated operating environment. Both boards use the PCI bus, and the two inputs have different speed and channel profiles, so you will need to assign signals deliberately: the 4-channel board for lower-rate measurements and the 16-channel board for faster ones. The included monitor is a compact ViewSonic VA705-LED, which is serviceable but not a high-spec display.
Bottom line: At USD 1,500, the National Instruments High Frequency Data Acquisition System is a specific solution for buyers who want both a 16-channel high-speed path and a 4-channel higher-resolution path in one used desktop bundle. The host hardware is aging, but the dual-board offering and included peripherals make it a coherent starting point for a dedicated acquisition bench.
National Instruments High Frequency Data Acquisition System
For the listed USD 1,500, this used system pairs a PCI-6251 board with 16 channels at 1 MHz and a PCI-4474 board with 4 channels at 102.4 kHz. The BNC-2110 signal box and cable are included for signal routing, and the full desktop setup means the monitor, keyboard, mouse, and host PC are all part of the price. The main limitation is the dated platform: an AMD Athlon 64 X2 Dual Core 4200+ running Windows XP. Choose it when the combination of 16-channel speed and 4-channel precision matches your acquisition needs.
