7A15

The 7A15 is a single channel, 80 MHz general-purpose vertical amplifier for 7000-series scopes. It was designed by Tom Rousseau.

Tektronix 7A15
80 MHz vertical amplifier 7A15 (manual page) Compatible with 7000-series scopes Produced from 1970 to 1987 Manuals 7A15 Tektronix 7A15 Manual 7A15A Tektronix 7A15A Manual Tektronix 7A15A Manual Change Info M23,481 AM-6565/U Tektronix AM-6565/U Manual Army Bulletin TB_9-6625-2024-35 re calibration (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

The AM-6565/U (aka 7A15N11) is the military version of this amplifier (without readout). A Department of the Army Technical Bulletin (see links section) suggests that it was used with the 7603 and its military version (the AN/USM-281C).

The 7A15A is a fully discrete design (i.e. no integrated circuits), built mostly from BJTs, with a 151-1032-00 dual JFET as the front-end buffer.

Key Specifications

Bandwidth	0 – 80 MHz (DC), 1 Hz – 80 MHz (AC)
Deflection	5 mV/Div to 10 V/Div in 1–2–5 sequence
Input impedance	1 MΩ // 20 pF
Features	×10 switch to extend sensitivity to 0.5 mV/Div (at 10 MHz bandwidth) Invert switch Probe ×10/Identify sensing input

Links

Patents that may apply to 7A15

Page	Title	Inventors	Filing date	Grant date	Links
Patent US 3562464A	Cam actuated switch having movable and fixed contacts on circuit board	Howard Vollum • Willem H Verhoef • Tony Sprando	1968-10-07	1971-02-09	Cam switches • 2101 • 2701 • 2703 • 432 • 434 • 465 • 475 • 5A15N • 5A18N • 5A20N • 5A21N • 5A38 • 5A45 • 5B10N • 5B12N • 7A15 • 7A16A • 7A18 • 7A19 • 7A24 • 7A26 • 7B10 • 7B15 • 7B50 • 7B51 • 7B52 • 7B53A • 7B50A • 7B70 • 7B71 • 7B80 • 7B85 • 7B87 • 7B92 • 7B92A • 7D01 • 7D12 • 7D15 • 7J20 • 7S12 • 7T11 • 7T11A • AF501 • AM502 • AM503 • DC502 • DC503 • DC504 • DC505 • DM501 • DM502 • FG501 • FG501A • FG502 • FG503 • FG504 • FG507 • PG501 • PG502 • PG505 • PG506 • PG506A • PG508 • TG501 • SC502 • SC503 • SC504
Patent US 3719788A	Switch having ganged contacts mounted on opposite sides of circuit board	Ken Holland • Tony Sprando	1971-02-04	1973-03-06	465 • 475 • 5A38 • 5A45 • 7A15 • 7A16A • 7A18 • 7A19 • 7A24 • 7A26 • 7D15 • PG506
Patent US 3753170A	Step attenuator apparatus having attenuator stages selectively connected in cascade by cam actuated switches	Ken Holland	1971-02-10	1973-08-14	465 • 475 • 5A38 • 5A45 • 7A15 • 7A16A • 7A18 • 7A19 • 7A24 • 7A26
Patent US 3900711A	Electrical contactor assembly for high frequency applications	Ken Holland	1974-02-04	1975-08-19	465 • 475 • 5A38 • 5A45 • 7A15 • 7A16A • 7A18 • 7A19 • 7A24 • 7A26 • 7D15 • AM503