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Tektronix 3T7
TDR sweep plug-in
Tektronix 3T7

Compatible with 560-series scopes

Produced from 1971 to 1973

(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

The Tektronix 3T7 is a sampling timebase and pulser plug-in for 560-series scopes, introduced in 1971.

When used with a 3S7, a TDR system is formed.

The pulse is produced by a 21 mA, 1.5 pF tunnel diode, CR587, made by GE with Tektronix part number 152-0489-00.

The interface between the GR-874 connector and the printed circuit board is described in US Patent 3,426,311.

The 3T7 uses a CA3051 dual amplifier chip.


please add



Some Parts Used in the 3T7

Part Part Number(s) Class Description Used in
155-0035-00 155-0035-00 155-0116-00 Monolithic integrated circuit quad op-amp 3110 3S7 3T7 492 492A 492AP 492P 494 494P 496 496P 4010 4011 4012 4013 7L5 7L12 7L13 7L14 7L18 7S11 7T11 7S12 S-6 1461 4602 P7001 613 653
1N3182 152-0269-00 Discrete component varactor diode 3L5 1L5 3T7 492 465M 7844 2465
STD962 152-0169-00 Discrete component 1 mA, 10 pF tunnel diode L140 Pentrix L20 Pentrix L30 067-0518-00 067-0594-00 1L60 1S2 1503 3B5 3T7 4054 4054A 4902 5S14N 7S14 7T11