Littelfuse

Typical Application Circuit

CAD software vendor Mentor Graphics Corp. (Wilsonville, Ore.) is developing just such a product. While not intending to replace Valor at the assembly stage, performing a basic DFM check before a design leaves the engineer's desktop would reduce the rate of do-overs at the factory, according to Steve Hughes, product-marketing manager in the Systems Design Division of Mentor.

That interest is at a high pitch can be seen in the recent flurry of requisitions for passive-optical-networking equipment. Verizon, for example, recently said it was investing $800 million in PON deployments this year, while BellSouth announced in June, at the Supercomm trade show, that it would spend $6 billion over the next few years for PON implementations. For its part, NTT in Japan has already chosen infrastructure providers for its planned PON deployment and is in the process of selecting suppliers of customer premises equipment.

Sensicast has devised a suite of control programs that have frequency agility” — that is, they seek out the clear frequencies and attempt to evenly spread out the simultaneous communications going on among the nodes on the mesh. In an industrial setting, multipath — or reflected transmissions that arrive slightly later to confuse a receiver — is also a problem that must be automatically overcome.

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CAD software vendor Mentor Graphics Corp. (Wilsonville, Ore.) is developing just such a product. While not intending to replace Valor at the assembly stage, performing a basic DFM check before a design leaves the engineer's desktop would reduce the rate of do-overs at the factory, according to Steve Hughes, product-marketing manager in the Systems Design Division of Mentor.

That interest is at a high pitch can be seen in the recent flurry of requisitions for passive-optical-networking equipment. Verizon, for example, recently said it was investing $800 million in PON deployments this year, while BellSouth announced in June, at the Supercomm trade show, that it would spend $6 billion over the next few years for PON implementations. For its part, NTT in Japan has already chosen infrastructure providers for its planned PON deployment and is in the process of selecting suppliers of customer premises equipment.

Sensicast has devised a suite of control programs that have frequency agility” — that is, they seek out the clear frequencies and attempt to evenly spread out the simultaneous communications going on among the nodes on the mesh. In an industrial setting, multipath — or reflected transmissions that arrive slightly later to confuse a receiver — is also a problem that must be automatically overcome.

A fixed-station interrogator reads the tag data as the container shipment leaves the originating depot. The information is relayed back to military supply-chain-management computers, called the In-Transit Visibility (ITV) network. Similarly, as the container tags are read at various fixed sites during transit, data is relayed back to ITV servers to keep track of the shipment. The fixed locators can also write any desired additional data to the tag.

The specification of constraints might appear to be a burden for using formal verification, but in fact it is a natural outgrowth of the overall verification process. An accurate set of assertions to capture an IP block's input protocol provides great benefit for both stand-alone and chip-level simulations. Treating these assertions as formal constraints is easy, and in practice the set of input assertions from simulation is very close to that needed for accurate formal verification.

Oscilloscope powerhouse Tektronix (Beaverton, Oregon) now has a new triggering system for its popular TDS7000B Series Digital Phosphor Oscilloscopes (DPO). Tek's new Pinpoint triggering system was previously available only for the firm's TDS6000B Series of oscilloscopes. Pinpoint is now available at no additional cost to owners of TDS7000B instruments.

GTS01A24-28S_Datasheet PDF

That interest is at a high pitch can be seen in the recent flurry of requisitions for passive-optical-networking equipment. Verizon, for example, recently said it was investing $800 million in PON deployments this year, while BellSouth announced in June, at the Supercomm trade show, that it would spend $6 billion over the next few years for PON implementations. For its part, NTT in Japan has already chosen infrastructure providers for its planned PON deployment and is in the process of selecting suppliers of customer premises equipment.

Sensicast has devised a suite of control programs that have frequency agility” — that is, they seek out the clear frequencies and attempt to evenly spread out the simultaneous communications going on among the nodes on the mesh. In an industrial setting, multipath — or reflected transmissions that arrive slightly later to confuse a receiver — is also a problem that must be automatically overcome.

A fixed-station interrogator reads the tag data as the container shipment leaves the originating depot. The information is relayed back to military supply-chain-management computers, called the In-Transit Visibility (ITV) network. Similarly, as the container tags are read at various fixed sites during transit, data is relayed back to ITV servers to keep track of the shipment. The fixed locators can also write any desired additional data to the tag.

The specification of constraints might appear to be a burden for using formal verification, but in fact it is a natural outgrowth of the overall verification process. An accurate set of assertions to capture an IP block's input protocol provides great benefit for both stand-alone and chip-level simulations. Treating these assertions as formal constraints is easy, and in practice the set of input assertions from simulation is very close to that needed for accurate formal verification.

Sensicast has devised a suite of control programs that have frequency agility” — that is, they seek out the clear frequencies and attempt to evenly spread out the simultaneous communications going on among the nodes on the mesh. In an industrial setting, multipath — or reflected transmissions that arrive slightly later to confuse a receiver — is also a problem that must be automatically overcome.

A fixed-station interrogator reads the tag data as the container shipment leaves the originating depot. The information is relayed back to military supply-chain-management computers, called the In-Transit Visibility (ITV) network. Similarly, as the container tags are read at various fixed sites during transit, data is relayed back to ITV servers to keep track of the shipment. The fixed locators can also write any desired additional data to the tag.

The specification of constraints might appear to be a burden for using formal verification, but in fact it is a natural outgrowth of the overall verification process. An accurate set of assertions to capture an IP block's input protocol provides great benefit for both stand-alone and chip-level simulations. Treating these assertions as formal constraints is easy, and in practice the set of input assertions from simulation is very close to that needed for accurate formal verification.

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A fixed-station interrogator reads the tag data as the container shipment leaves the originating depot. The information is relayed back to military supply-chain-management computers, called the In-Transit Visibility (ITV) network. Similarly, as the container tags are read at various fixed sites during transit, data is relayed back to ITV servers to keep track of the shipment. The fixed locators can also write any desired additional data to the tag.

The specification of constraints might appear to be a burden for using formal verification, but in fact it is a natural outgrowth of the overall verification process. An accurate set of assertions to capture an IP block's input protocol provides great benefit for both stand-alone and chip-level simulations. Treating these assertions as formal constraints is easy, and in practice the set of input assertions from simulation is very close to that needed for accurate formal verification.

The specification of constraints might appear to be a burden for using formal verification, but in fact it is a natural outgrowth of the overall verification process. An accurate set of assertions to capture an IP block's input protocol provides great benefit for both stand-alone and chip-level simulations. Treating these assertions as formal constraints is easy, and in practice the set of input assertions from simulation is very close to that needed for accurate formal verification.

Oscilloscope powerhouse Tektronix (Beaverton, Oregon) now has a new triggering system for its popular TDS7000B Series Digital Phosphor Oscilloscopes (DPO). Tek's new Pinpoint triggering system was previously available only for the firm's TDS6000B Series of oscilloscopes. Pinpoint is now available at no additional cost to owners of TDS7000B instruments.

Semiconductors are inherently reliable. The tight controls during manufacturing, the refined processes, the rigorous testing and verification all result in a pretty impressive array of reliable devices.

Lit by a blue LED, the latest addition to the Knitter-Switch range of miniature, illuminated push buttons extends the choice for design engineers beyond the existing red, green and yellow colours. Blue is a popular colour with automotive products and the new switch is simple to customise for many application by using a wide range of buttons and bezels.