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Tektronix SD24

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Description of Tektronix SD24

Categories: T&M, Sampling Heads

Manufacturer: Tektronix

Model: SD24

Condition: Used

Seller: NSCA Technologies LLC

Tektronix SD24 20 GHz Sampling Head

Description

Description

Tektronix SD24 20 GHz Sampling Head

Key Features

  • TDR/Sampling Head
  • Dual-channel, Differential TDR
  • 20 GHz Bandwidth
  • 35 ps Reflected Rise Time

Product specifications of Tektronix SD24 (From Used-Line T&M Specifications)

  • Launch Date
  • Status Discontinued by Manufacturer

The SD24 is a dual-channel TDR/Sampling Head. This sampling head has a rise time of 17.5 ps or less, with a typical 20 GHz equivalent bandwidth. Each channel of the SD24 is also capable of generating a fast rising step for use in Time Domain Reflectometry (TDR). In TDR mode, the acquisition portion of the sampling head monitors the incident step and any reflected energy. The reflected rise time of the TDR step is 35 ps or less. The polarity of the TDR step of each channel can be selected independently of the other channel. This allows for differential or common-mode testing of two coupled lines, in addition to the independent testing of isolated lines. The SD24 can be used to characterize crosstalk by using the TDR step to drive one line while monitoring a second with the other channel. The "filter" function on the CSA803C/11801C can be used with TDR or crosstalk measurements to characterize a system at a slower rise time.

  • Two independent channels with signal acquisition and step generator capabilities. In addition to signal sampling, the two channels let you perform differential and common mode TDR and TDT measurements
  • Both step generators have switchable polarity, with 250 mV amplitude
  • A 20 GHz typical bandwidth provides high-speed signal capture
  • A 28 ps typical displayed TDR incident rise time and a 17.5 ps or less acquisition rise time. The reflected rise time is 35 ps or less
  • Displayed noise is 750 µVrms typical without smoothing and 350 µV typical with smoothing on
  • Dynamic Range: 1 Vp-p within a ±1.6 V
  • Dot Transient Response: Accuracy after calibration at operating temperature is ±5% for signals up to 0.5 Vp-p. Adjustable to unity for signals up to 1.0 Vp-p
  • TDR Step Amplitude: Adjustable to ±250 mV (polarity of either step may be inverted)
  • Time Coincidence Between TDR steps: Adjustable to less than 1 ps
  • TDR Aberrations (at ±250 mV amplitude)
    • 10 ns to 20 ps before step: ±3% or less
    • <300 ps after step: +10%, -5% or less
    • 300 ps to 5 ns after step: ±3% or less
    • Elsewhere: ±1% or less
  • Precision 3.5 mm connectors
  • Input Impedance: 50 Ohm ±0.5 Ohm
  • A Channel Select button for quick trace acquisition and selection from the sampling head front panel

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