Phase locked loop (PLL) timing device evaluation system and method for evaluating PLL timing devices
First Claim
1. A method for evaluating Phase Locked Loop (PLL) timing devices comprising:
- providing an evaluation board including a PLL-timed physical device, an input and output circuit, connector receptacles and control logic;
providing PLL cards configured to be inserted into at least two of the connector receptacles, each of the PLL cards including a PLL timing device;
providing one or more backplane emulator card configured to be inserted into one of the connector receptacles, the backplane emulator card having electrical characteristics emulating a portion of a communication system extending between phase locked loop timing devices of the communication system; and
wherein different PLL cards and different backplane emulator cards can be coupled to the connector receptacles to emulate different configurations of the communication system.
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Accused Products
Abstract
An evaluation board and a method for evaluating Phase Locked Loop (PLL) timing devices. The evaluation board includes an input and output circuit disposed on a circuit board along with control logic, and a plurality of PLL-timed physical devices that are identical to the physical devices used in the customer'"'"'s communication system. A first connector receptacle and a second connector receptacle are coupled to the control logic and to one or more of the PLL-timed physical devices, and are configured to receive a PLL card including a PLL timing device. A third connector receptacle is coupled in series between the first connector receptacle and the second connector receptacle and is configured to receive a backplane emulator card having electrical characteristics emulating a backplane of the customer'"'"'s communication system.
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Citations
20 Claims
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1. A method for evaluating Phase Locked Loop (PLL) timing devices comprising:
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providing an evaluation board including a PLL-timed physical device, an input and output circuit, connector receptacles and control logic; providing PLL cards configured to be inserted into at least two of the connector receptacles, each of the PLL cards including a PLL timing device; providing one or more backplane emulator card configured to be inserted into one of the connector receptacles, the backplane emulator card having electrical characteristics emulating a portion of a communication system extending between phase locked loop timing devices of the communication system; and wherein different PLL cards and different backplane emulator cards can be coupled to the connector receptacles to emulate different configurations of the communication system. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An evaluation board comprising:
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a circuit board; an input and output circuit disposed on the circuit board; control logic disposed on the circuit board and coupled to the input and output circuit; a plurality of PLL-timed physical devices, where some of the PLL-timed physical devices are the same type of physical devices in a communication system, each of the plurality of PLL-timed physical devices coupled to the input and output circuit; a first connector receptacle disposed on the circuit board and coupled to the control logic and to one or more of the PLL-timed physical devices, the first connector receptacle configured to receive a PLL card including a PLL timing device; a second connector receptacle disposed on the circuit board and coupled to the control logic and to one or more of the PLL-timed physical devices, the second connector receptacle configured to receive a PLL card including a PLL timing device; and a third connector receptacle coupled in series between the first connector receptacle and the second connector receptacle and configured to receive a backplane emulator card having electrical characteristics emulating a backplane of the communication system. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A system for evaluating PLL devices comprising:
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a circuit board; an input and output circuit disposed on the circuit board; control logic disposed on the circuit board and coupled to the input and output circuit, the control logic including circuitry identical to control logic circuitry of a communication system that is being emulated; a plurality of PLL-timed physical devices, where some of the PLL-timed physical devices are the same type of physical devices in the communication system, each of the plurality of PLL-timed physical devices coupled to the input and output circuit; a first connector receptacle disposed on the circuit board and coupled to the control logic and to one or more of the PLL-timed physical devices; a second connector receptacle disposed on the circuit board and coupled to the control logic and to one or more of the PLL-timed physical devices; a plurality of phase locked loop (PLL) cards, each of the PLL cards including a PLL timing device that can be used in the communication system and including a card connector configured to be coupled to the first connector receptacle and the second connector receptacle; a third connector receptacle coupled in series between the first connector receptacle and the second connector receptacle; a backplane emulator card including a connector configured to be coupled to the third connector receptacle, the backplane emulator card having electrical characteristics emulating a backplane of the communication system; and wherein ones of the plurality of PLL cards can be coupled to the first connector receptacle and to the second connector receptacle, and the backplane emulator card can be inserted into the third connector receptacle for evaluating different configurations of the communication system. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification