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The PCI-702 and the PCI-703 Multiplexers feature an 8-to-1 relay switch configuration with a 200 MHz bandwidth. These multiplexers, or scanners, utilize coaxial relays and stripline circuit board techniques to attain a 200 MHz bandwidth and a channel-to-channel skew of 200 ps. Larger switch arrays can be constructed by layering the multiplexers. The PCI-702 has an additional set of relays that are used to select onboard termination resistors for each channel. These extra relays provide the PCI-702 with an "Auto-Termination" mode in which the selected channel is not terminated (it is typically terminated at the oscilloscope) and the remaining channels are terminated on the PCI-702. The PCI-703 does not have onboard termination resistors. The signal paths on the PCI-702 and the PCI-703 are bi-directional. For more information, download the .pdf of the complete, detailed data sheet and specifications.

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8-to-1 Relay Cards - 200 MHz Bandwidth - Coaxial Relays -
Switch Complete Output

The control panel for these analog multiplexers allows the test engineer to name each signal path, thereby making the test system easier to use and modify. Also, the command set for these scanners adheres to the Standard Commands for Programmable Instruments (SCPI) syntax.

The standard connector is the reliable and high bandwidth SMB, although SMA connectors are also available. The scanners were designed using 50 Ohm design rules, but 75 Ohm scanners have been built and are in use in a variety of video applications. Contact the factory for different connector and impedance requirements. These multiplexers have a "Switch Complete" output signal that is used to indicate that the relays have finished closing. This signal alleviates the requirement for the application software to provide a timing loop after each switch configuration change. The instrumentation system typically uses the Switch Complete output to arm a measuring instrument such as a digital storage oscilloscope.