S-2: Difference between revisions

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{{Spec | Operating input voltage range | −1 V to +1 V with ≤1 V<sub>p-p</sub> signals }}

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==Similarity to [[S-1]]==

The S-1 and S-2 samplers are constructed very similarly. The mechanical construction including internal connector locations is identical, and the preamp boards are almost identical. The main difference in these boards is the value of the gain adjust trimpot R46, which is 5k for the S-1 and 30k for the S-2, to allow higher gain settings to compensate for the shorter sampling pulses of the S-2. Bipolar transistors Q41 and Q45 are different types (why?). Preamp boards can be swapped between S-1s and S-2s for testing without issues.

The S-1 and S-2 samplers are constructed very similarly. The mechanical construction including internal connector locations is identical, and the preamp boards are almost identical. The main difference in these boards is the value of the gain adjust trimpot R46, which is 5k for the S-1 and 30k for the S-2, to allow higher gain settings to compensate for the shorter sampling pulses of the S-2. Bipolar transistors Q41 and Q45 are different types (why?). Preamp boards can be swapped between S-1s and S-2s for testing purposes without issues.

The strobe boards use identical active components ([[avalanche transistor]] Q69 [[153-0556-00]] and [[Snap-off diode]] D61 152-0335-00), but the board layout is different to accommodate longer strobe clipping lines in the S-1.

@@ Line 25: / Line 25: @@
 {{BeginSpecs}}
-{{Spec | Rise time | 75 ps }}
+{{Spec | Rise time | 75 ps (50 ps initially) }}
 {{Spec | Bandwidth | 4.66 GHz eq.}}
 {{Spec | Operating input voltage range | −1 V to +1 V  with ≤1 V<sub>p-p</sub> signals }}
@@ Line 36: / Line 36: @@
 ==Similarity to [[S-1]]==
-The S-1 and S-2 samplers are constructed very similarly. The mechanical construction including  internal connector locations is identical, and the preamp boards are almost identical. The main difference in these boards is the value of the gain adjust trimpot R46, which is 5k for the S-1 and 30k for the S-2, to allow higher gain settings to compensate for the shorter sampling pulses of the S-2. Bipolar transistors Q41 and Q45 are different types (why?). Preamp boards can be swapped between S-1s and S-2s for testing without issues.
+The S-1 and S-2 samplers are constructed very similarly. The mechanical construction including  internal connector locations is identical, and the preamp boards are almost identical. The main difference in these boards is the value of the gain adjust trimpot R46, which is 5k for the S-1 and 30k for the S-2, to allow higher gain settings to compensate for the shorter sampling pulses of the S-2. Bipolar transistors Q41 and Q45 are different types (why?). Preamp boards can be swapped between S-1s and S-2s for testing purposes without issues.
 The strobe boards use identical active components ([[avalanche transistor]] Q69 [[153-0556-00]] and [[Snap-off diode]] D61 152-0335-00), but the board layout is different to accommodate longer strobe clipping lines in the S-1.

S-2: Difference between revisions

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