S-1

The S-1 sampling plug-in head provides a single GR-874 50 Ω input with a 350 ps rise-time.

The S-1 can be used with the 7000 series of sampling plug-ins, as well as the 3S series of sampling units.

Key Specifications

Rise time	350 ps
Bandwidth	1 GHz
Input amplitude	-1 V to +1 V with ≤1 Vp-p signals
Maximum input	±5 VDC or sine of 10 Vp-p up to 10 MHz
Input impedance	50 Ω (GR-874)
Noise	< 2 mV
Features	trigger pickoff for internal triggering

Links

• S-1 page @ amplifier.cd

Internals

The S-1 uses a two-diode sampling gate which has relatively high "kick-out" (leakage of the strobe signal out of the input). The manual cautions,

Operating the sampling head without the input connector terminated by a 50 Ω resistor or coaxial cable will cause a vertical shift of the zero signal baseline by a few millivolts. This is caused by the strobe kickout signal being reflected from the open input connector, and orriving bock at the sampling bridge while the bridge is conducting.

Pictures

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  Strobe board

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  Preamp board

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  S-1 front

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  Diode mount in S-1

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  Diode mount in S-1

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  Diode mount in S-1

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  S-1 in a 3S2 sampler / 567 scope

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  Tektronix S-1 sampler