Probe body for an electrical measurement system
First Claim
1. A probe body having a first probe-tip terminal for connection by way of a probe tip to a test point, a second probe-tip terminal for connection to a stimulus probe, and a cable port for connection by way of at least one cable to a measurement instrument, and comprising:
- probe circuitry having an output terminal connected to the cable port and also having an input terminal,a function generator, andswitch means having a first state in which the input terminal of the probe circuitry is connected to the first probe-tip terminal, a second state in which the input terminal of the probe circuitry is connected to the function generator, so that when the switch means are in the second state the function generator may be used to impress a signal having a predetermined waveform on the probe circuitry, and a third state in which the input terminal of the probe circuitry is connected to the first probe-tip terminal and the function generator is connected to the second probe-tip terminal.
1 Assignment
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Accused Products
Abstract
A probe body for a measurement system comprises a probe-tip terminal for connection by way of a probe tip to a test point, a cable port for connection by way of at least one cable to a measurement instrument, probe circuitry, a function generator, and a switch. In a first state of the switch, the input terminal of the probe circuitry is connected to the probe-tip terminal and in a second state of the switch the input terminal of the probe circuitry is connected to the function generator. When the switch is in the second state, the function generator may be used to impress a signal having a predetermined waveform on the probe circuitry.
23 Citations
23 Claims
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1. A probe body having a first probe-tip terminal for connection by way of a probe tip to a test point, a second probe-tip terminal for connection to a stimulus probe, and a cable port for connection by way of at least one cable to a measurement instrument, and comprising:
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probe circuitry having an output terminal connected to the cable port and also having an input terminal, a function generator, and switch means having a first state in which the input terminal of the probe circuitry is connected to the first probe-tip terminal, a second state in which the input terminal of the probe circuitry is connected to the function generator, so that when the switch means are in the second state the function generator may be used to impress a signal having a predetermined waveform on the probe circuitry, and a third state in which the input terminal of the probe circuitry is connected to the first probe-tip terminal and the function generator is connected to the second probe-tip terminal. - View Dependent Claims (2, 3)
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4. A measurement system comprising a measurement instrument, a probe body having a first probe-tip terminal for connection by way of a probe tip to a test point, a second probe-tip terminal for connection to a stimulus probe, and a cable port, and a probe cable for connecting the cable port of the probe body to the measurement instrument, the probe body comprising:
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probe circuitry having an output terminal connected to the cable port and also having an input terminal, a function generator, and switch means having a first state in which the input terminal of the probe circuitry is connected to the first probe-tip terminal, a second state in which the input terminal of the probe circuitry is connected to the function generator, so that when the switch means are in the second state the function generator may be used to impress a signal having a predetermined waveform on the probe circuitry, and a third state in which the input terminal of the probe circuitry is connected to the first probe-tip terminal and the function generator is connected to the second probe-tip terminal. - View Dependent Claims (5, 6, 7, 8, 9, 10)
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11. A probe body having a probe-tip terminal for connection by way of a probe tip to a test point, and a cable port for connection by way of at least one cable to a measurement instrument, and comprising:
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probe circuitry having an output terminal connected to the cable port and also having an input terminal, a function generator which comprises a non-volatile memory and a local clock generator for clocking the contents out of the non-volatile memory, the local clock generator being operative to operate in synchronism with an externally-applied master clock and to continue operation after removal of the master clock, and switch means having a first state in which the input terminal of the probe circuitry is connected to the probe-tip terminal and a second state in which the input terminal of the probe circuitry is connected to the function generator, so that when the switch means are in the second state the function generator may be used to impress a signal having a predetermined waveform on the probe circuitry. - View Dependent Claims (12, 13)
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14. A measurement system comprising a measurement instrument including a master clock generator, and also comprising a probe body having a probe-tip terminal for connection by way of a probe tip to a test point and also having a cable port, and a probe cable for connecting the cable port of the probe body to the measurement instrument, the probe body comprising:
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probe circuitry having an output terminal connected to the cable port and also having an input terminal, a function generator which comprises a local clock generator for receiving over the probe cable the master clcok generated by the master clock generator and generating a local clock that is synchronized with the master clock, and a non-volatile memory connected to receive the local clock and generate a predetermined sequence of digital data values, and switch means having a first state in which the input terminal of the probe circuitry is connected to the probe-tip terminal and a second state in which the input terminal of the probe circuitry is connected to the function generator, so that when the switch means are in the second state the function generator may be used to impress a signal having a predetermined waveform on the probe circuitry. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A measurement system comprising a measurement instrument, a probe body having a probe-tip terminal for connection by way of a probe-tip to a test point and also having a cable port, and a probe cable for connecting the cable port of the probe body to the measurement instrument, a probe body comprising:
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probe circuitry having an output terminal connected to the cable port and also having an input terminal, a function generator which comprises a non-volatle memory and a local clock generator for clocking the contents out of the non-volatile memory, the local clock generator being operative to oscillate in synchronism with an externally-applied master clock and to continue oscillation after removal of the master clock, and switch means having a first state in which the input terminal of the probe circuitry is connected to the probe terminal and a second state in which the input terminal of the probe circuitry is connected to the function generator, so that when the switch means are in the second state the function generator may be used to impress a signal having a predetermined waveform on the probe circuitry. - View Dependent Claims (21, 22, 23)
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Specification