Tektronix 7A11 250MHz Low Cap FET Probe Amplifer

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BAMA 7A11 Free Manual Download Site

Tektronix Catalog CostLow BidHigh Bidaverage
$850 (1969)
$950 (1973)
$1350 (1977)
$2325 (1982)
2110550
$71.00 10/13/01 #1646854718 30for30s
no bids (asked $50) 11/7/01 #1658337017 junkyardwillie
$85.00 11/9/01 #1658457063 tronhole
no bids (asked $50) 12/5/02 #1921326243 goldenrubi
no buy ($14.29 < reserve) 1/20/03 #3106880466 rtceeg (working)
$19.50 7/20/04 #3827707232 toynation1 (4 bids $10 start) (untested)

  • Bandwidth : DC to 250 MHz
  • Calibrated 5 mV/div to 20 V/div in 12 steps
  • .
  • .

    FAMILYBANDWIDTHRISETIME
    7900250 MHz1.4 ns
    7704A Opt 9180 MHz2.0 ns
    7704A170 MHz2.1 ns
    R7704150 MHz2.4 ns
    7600100 MHz3.5 ns
    750090 MHz3.9 ns
    740060 MHz5.9 ns
    730025 MHz14 ns


    The 7A11 Wideband Plug-In Amplifier with the captive FET probe input configuration optimizes signal acquisition with high resistance (1 Mohm) and low capacitance (5.8 pF at 5 mV/div), without loss of signal amplitude by probe attenuation. Two 20X attenuators, physically mounted in the probe tip, are relay-switched into the input signal path at the appropriate deflection factor. Therefore you need not concern yourself with manual plug-on attenuators and signal dynamic range.
  • Bandwidth: Dc to 250MHz (7900 Family)
  • Deflection Factor: 5 mV/div to 20 V/div