Agilent E8491B user manual and datasheet
HP/Agilent E8491B
E8491B IEEE-1394 PC Link to VXI, C-Size
The Agilent E8491B IEEE-1394 PC Link to VXI is a C-size, 1-slot, message-based VXI module providing a direct connection from your PC to a VXI mainframe via the industry standard IEEE-1394 bus (FireWire). The E8491B is a cost-effective choice for test applications when used with the E84XX mainframe series. The E8491B is well suited for data acquisition applications moving large blocks of data.
The E8491B is a high-speed C-size device with Resource Manager and Slot 0 capability. Its logical address is 0, therefore it is always the mainframe’s Resource Manager and is typically installed in mainframe Slot 0. The high speed is accomplished, in part, through the use of small signals (200 mV) that are transmitted differentially over the twisted-pair wire set with controlled-impedance characteristics. The differential signal provides high-noise immunity.
The E8491B includes a C-size VXI Slot 0 module and a 4.5-meter cable. Ease of configuration is achieved with automatic recognition of a new IEEE-1394-based device without powering down the PC, known as “hot plug-in.”
The E8491B Option 001 is an OHCI-based IEEE-1394/PCI host adapter card. It is a PC plug-in card capable of transferring data at up to 400 Mbits/second. This card requires connection to the PC 12V disk drive power bus (not available on some industrial PC models) via a supplied cable. The card has three external 1394 ports. If required, the OHCI-based IEEE-1394/PCI card can supply 12 V at up to 1.5 A for IEEE-1394 devices that require power.
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