Keysight Agilent E8491B | IEEE-1394 PC Link to VXI Module In Stock

Description

1. At-A-Glance Executive Brief

• Model / Catalog Number: E8491B (Includes Option 001 interface components typically)
• Brand: Keysight Technologies (formerly Agilent / Hewlett-Packard)
• Part Type: IEEE-1394 (FireWire) PC Link to VXI Module (C-Size, Slot 0 / Resource Manager)
• Lifecycle Status: Mature / Discontinued Support Line (Widely utilized in legacy aerospace, defense, and high-speed data acquisition test racks)
• Core Application: Providing high-speed, direct communication and control between an external PC and a C-size VXI test system mainframe
• Net Weight: ~2.3 kg (5.0 lbs, shipping weight including accessories)

2. Technical Introduction

A communication failure between an automated test controller PC and a modular VXI instrument chassis can halt production verification testing, corrupt data collection pipelines, and stall complex manufacturing test programs.

The Keysight / Agilent E8491B is a 1-slot, C-size, message-based VXI module engineered to establish a direct, high-speed connection from a standard personal computer to a VXI mainframe via the industry-standard IEEE-1394 (FireWire) bus. Operating with Slot 0 and Resource Manager capabilities (Logical Address 0), it handles high-throughput block data transfers efficiently using differential signaling for exceptional noise immunity. Deploying a verified original replacement controller restores direct PC-to-mainframe connectivity and timing control without requiring expensive system architecture redesigns.

Engineer’s Takeaway: Procuring an authentic Keysight E8491B module ensures exact VME/VXI backplane pin compatibility, correct VISA/SICL software layer handshakes, and strict adherence to FireWire data transfer parameters, preventing communication dropouts during critical test runs.

3. Core Technical Specifications

4. Field Engineer’s Tech Notes

• Hot-Plug Precautions: While the IEEE-1394 interface supports hot plug-in features for automated device recognition, always ensure proper grounding procedures and static safety precautions are followed before manipulating the FireWire data cable or extracting the module from an active C-size mainframe.
• PCI Host Card Power Connection: If utilizing the companion PCI host card (Option 001), ensure the auxiliary 12V disk drive power cable is correctly connected from the PC internal power supply to the PCI card to guarantee proper bus power delivery.

5. Adaptive QA & Testing Protocol

Every unit undergoes rigorous bench validation prior to dispatch. For the Keysight E8491B controller, our technicians mount the module in a dedicated C-size VXI test rack, verify slot 0 resource manager bootstrapping, test 400 Mbps FireWire communication throughput with an active PC host, and check differential signal integrity across the data lines. Functional test reports or pre-shipment video verification can be provided upon request.

6. Buyer’s FAQ

• Are these VXI controllers supplied as New Surplus or refurbished?

  We stock both factory-sealed New Surplus (NSFP) and fully bench-tested, static-safe operational units. Condition status is explicitly marked on every quote.

• What warranty coverage comes with this part?

  All replacement Keysight modular test instruments and controllers are backed by a standard 12-month operational warranty from the date of invoice.

• How fast can this module ship to minimize test bench downtime?

  In-stock items ship same-day via priority air courier services to global destinations, mitigating critical path delays during emergency facility maintenance.

• Does the E8491B include the required FireWire cable and host adapter card?

  Standard inventory kits include the C-size VXI module; specific configuration packages can include the matching interconnection cable and PCI host interface card upon request. Please specify your host connection needs when ordering.