SD-51

Tektronix SD-51
20 GHz trigger countdown head Tektronix SD-51 Trigger Head Compatible with 11800-series scopes Produced from 1989 to (?) Manuals Tektronix SD-51 User Manual (PDF) (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

The Tektronix SD-51 Trigger-Countdown Head allows triggering a CSA 803/11800-series scope on signals from 1 to 20 GHz, at less than 6 ps RMS jitter.

The SD-51 synchronizes a tunnel diode oscillator to a subharmonic of the input signal.

The project manager for the SD-51 was Murlan Kaufman. Regarding the SD-51, he wrote:

The SD-51 is based almost entirely upon the 7K Series S-51. It has been repackaged in the SD sampling head package for the 11800 Series to enable us to compete favorably in the communications market.

Key Specifications

Trigger Bandwidth	1 to 20 GHz typical
Minimum Sensitivity	100 mV_p-p
Maximum input Voltage	5 V_p-p
Input Impedance	50 Ω//1 pF
RMS Jitter	6 ps including instrument mainframe and SD-24 jitter

Pictures

SD-51

Key Specifications

Pictures

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