281: Difference between revisions
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* [[Media:070-0515-00.pdf|Tektronix 281 Manual] (PDF) | * [[Media:070-0515-00.pdf|Tektronix 281 Manual]] (PDF) | ||
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The '''Tektronix 281 TDR Pulser''' is an accessory that plugs into the probe power jack on [[1S1]], [[3S1]], and [[4S1]] plug-ins. | The '''Tektronix 281 TDR Pulser''' is an accessory that plugs into the probe power jack on [[1S1]], [[3S1]], and [[4S1]] plug-ins. | ||
Revision as of 12:46, 20 August 2021
The Tektronix 281 TDR Pulser is an accessory that plugs into the probe power jack on 1S1, 3S1, and 4S1 plug-ins.
It has two GR-874 connectors. One connector is intended to be connected to the input of a sampling oscilloscope. The other connector attaches to the cable that is being tested.
The 281 periodically produces a pulse that is launched down a cable. The returning reflection is allowed to pass into the oscilloscope for measurement. The pulse is specified to be 460 mV, with a rise time of 750 ps or less, with a 5 μs pulse width.
The 281 uses a 1N3130 tunnel diode as a multivibrator. The multivibrator drives a common-base output transistor.
Pictures
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Entry in 1968 catalog
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schematic
