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Operates as a Splitter for Radar or TV Video Signals
Depending upon which of its two input connectors is used, it can either operate as a radar signal splitter card or as a TV video signal splitter card. Input signals to the card are conditioned, regenerated and split to three configurable outputs.
Typical applications for the card include distribution of analogue radar or TV video signals to multiple display consoles or to parallel radar processing systems on board ships or at land-based trials test sites.
6U VME form factor
The HPx-256 card has a 6U VME form factor and is powered via the +5V, +12V and -12V pins on the VME P1 connector. The card uses none of the address or data lines on either the VME P1 or P2 connectors. Signal I/O is exclusively via front panel connectors, although there are versions of the HPx-256 card that support signal I/O exclusively via the VME P2 connector (please consult Cambridge Pixel for further details of these, as well as other customised versions of the card).
Radar Signal Splitter
When the HPx-256 is used as a radar signal splitter card, radar signals are connected to the “Radar In” connector and the card splits these inputs to three sets of outputs. A single set of radar signals comprises up to five connections: video, trigger/sync, ACP, ARP and SHM. Jumper links allow input video signal termination of 50Ω, 75Ω or high impedance to be selected. Each of the output video signals has a fixed impedance of 75Ω and a configurable gain of “1.0” or “0.6”, which is independently selectable via jumper links.
The trigger/sync, ACP, ARP and SHM signals are received, thresholded and regenerated by the card. Per-signal jumper links select support for either single-ended (0 to 15V, 3V threshold) or differential (RS-422) input signals. Where single-ended input signals are selected, jumper links are also provided to independently select termination of 50Ω, 75Ω or high impedance. The output signal pulse width is the same as the input signal pulse width.
The output signals can be independently configured as single-ended, with 75Ω impedance (0 to 12V unterminated) or differential (RS-422) via jumper links.
TV Video Signal Splitter
When the HPx-256 is used as a TV video signal splitter card, a TV video signal is connected to the “TV In” connector and the card splits this input to three outputs. The card supports composite SMPTE 170M (NTSC) or CCIR (PAL) video with 1V peak-to-peak signalling. The input TV video signal is 75Ω terminated. The three TV video signal outputs have a source impedance of 75Ω.
HPx-256 VME Radar/TV Video Signal Splitter Card Details
