Tektronix 7A18A

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The Tektronix 7A18A dual trace amplifier plug-in unit is designed for use with Tektronix 7000 Series oscilloscopes. The 7A18A is a dual-channel, medium-bandwidth amplifier. Internal gain and compensation circuits are automatically switched to correspond to the setting of the Volts/Div switch. Channel 2 can be inverted for differential measurements. The 7A18A can be operated in any plug-in compartment of the 7000 Series oscilloscopes.

• Bandwidth
  • Upper bandwidth DC coupled: 75 MHz
  • Lower bandwidth AC coupled: ≤10 Hz; with 10X probe: 1 Hz or less
• Calibrated deflection factors: 5 mV/div to 5 V/div; Uncalibrated (VARIABLE): Continuous to at least 12.5 V/div
• Input: 1 MΩ, ~20 pF
• Maximum input voltage: DC-coupled - 250 V (DC + peak AC); AC-coupled - 500 V (DC + peak AC)
• Common Mode Rejection Ratio (ADD, Ch 2 Invert): At least 10:1
• Channel isolation: 50:1 display ratio up to 50 MHz
• Displayed noise (tangentially measured): 0.06 div or less
• Overdrive recovery time: ≤0.1 ms
• Time delay between channels: ≤700 ps
• Display modes:
  • Channel 1 only
  • Dual-trace, alternate between channels
  • Added algebraically
  • Dual-trace chopped between channels
  • Channel 2 only
• DC Offset option: ±200 division maximum, equivalent to ±1 V at 5 mV/div