7A18

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

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

Pictures

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  7A18A Front

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  7A18A left side. The step attenuators can be seen on the left, the amplifier board on the right.

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  7A18A right side. The circuit boards on top carry the readout circuitry.

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  7A18 attenuator opened. One of the attenuation R/C modules has been unplugged to reveal the switch contacts.