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US5418464A
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Thermocouple open circuit detection with tone frequency signal application and spectral analysis
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EP0574918A1
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Selectable AC or DC coupling for coaxial transmission lines
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US5332963A
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High input impedance buffer with low feedback resistance
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EP0581426A2
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Autoranging instrument having selectable range setting restrictions
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US5418450A
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Coupling circuit for a measuring instrument
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US5379176A
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Protective input circuit for an instrument
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US5321403A
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Multiple slope analog-to-digital converter
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US5382910A
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Dual time base zero dead zone time domain reflectometer
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EP0569128A2
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Extended high-speed testing of microprocessor-based devices
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US5343164A
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Operational amplifier circuit with slew rate enhancement
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US5309428A
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Token ring local area network testing apparatus for phase jitter testing
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US5365513A
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Token ring local area network testing apparatus for matching its speed to ring speed
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US5291073A
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Thermal power sensor
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USRE34428E
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Analog-to-digital converter with offset voltage polarity inversion
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US5186634A
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Electrical contact having spring-biased tabs for mounting to a circuit board
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US5325365A
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In a memory emulation test apparatus, a method of and system for fast functional testing of memories in microprocessor-based units
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US5216387A
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Noise reduction method and apparatus for phase-locked loops
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US5206650A
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Charge-controlled integrating successive-approximation analog-to-digital converter
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EP0504515A2
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Memory emulation test system in which undesirable microprocessor reset is precluded
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EP0503185A1
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Multimeter having min/max time stamp
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