7A12: Difference between revisions

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The '''Tektronix 7A12''' is a 120 MHz dual-trace vertical plug-in for [[7000-series scopes]].
The '''Tektronix 7A12''' is a 120 MHz dual-trace vertical plug-in for [[7000-series scopes]].


Switches on the front panel control [[miniature relays]] in the signal path,
Switches on the front panel control [[miniature relays]] in the signal path,

Revision as of 03:32, 9 August 2021

Tektronix 7A12
120 MHz dual channel amplifier
7A12 front view

Compatible with [[7000-series scopes]]

Produced from 1969 to 1974

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


The Tektronix 7A12 is a 120 MHz dual-trace vertical plug-in for 7000-series scopes.

Switches on the front panel control miniature relays in the signal path, such as those selecting input attenuators, through logic circuits. It uses the 155-0032-00 as a gain stage and the 155-0022-00 for channel switching.

The 7A12 was designed by Roy Hayes (who also designed the 3A3 and 3A8 before leaving for HP Loveland in Jan 1971). The Evaluation Engineer for the 7A12 was Peter Starič, co-author of the book "Wideband Amplifiers" with Erik Margan.

Key Specifications

Bandwidth 120 MHz (79xx) / 105 MHz (77xx) / 55 MHz (74xx)
Deflection 5 mV/Div to 5 V/Div (1–2–5), variable up to 12.5 V/Div
Input impedance 1 MΩ // 24 pF
Maximum input 5 V (0.5 W) − no damage below 10 V (2 W)
Timing Delay difference between channels < 500 ps
Channel Isolation At least 3000:1 at 75 MHz
Maximum Input Voltage 350 V DC + Peak AC at 1 kHz or less

Links

Pictures