7A18

The Tektronix 7A18 is a general-purpose 75 MHz dual-trace vertical plug-in for 7000-series scopes.

{{{manufacturer}}} Vertical Amplifier
75 MHz dual channel amplifier 7A18 front view Compatible with [[7000-series scopes]] Produced from {{{introduced}}} to {{{discontinued}}} Manuals Tektronix 7A18 Manual (PDF) Tektronix 7A18A Manual (PDF) Tektronix 7A18+7A18N Manual (OCR, PDF) Tektronix 7A18A Manual (OCR, PDF) (All manuals in PDF format unless noted otherwise) [[Category:Introduced in {{{introduced}}}]]

Model 7A18N is identical except it omits the readout circuits.

Specifications

Input impedance: 1 MΩ in parallel with 20 pF
Deflection factors: 5 mV/div to 5 V/div in 1–2–5 sequence, 2%
Bandwidth: 0 – 75 MHz (DC), 10 Hz – 75 MHz (AC)
Noise: < 300 μV in 5mV/Div
Mode: CH1 only, CH2 only, Add CH1+CH2, Alternating, Chopped. CH2 can be inverted.
Input sockets with contact ring for probe ×10 / identify information
No bandwidth limiter switch
Weight: 1.4 kg

7A18A Front
7A18A left side. The step attenuators can be seen on the left, the amplifier board on the right.
7A18A right side. The circuit boards on top carry the readout circuitry.
7A18 attenuator opened. One of the attenuation R/C modules has been unplugged to reveal the switch contacts.