Sampling diodes: Difference between revisions

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gear or replacements can be improvised using modern parts.  [[Hewlett-Packard|HP/Avago]] and now Broadcom makes integrated pairs and quads of high-speed Schottky diodes (e.g. HSMS-28xx series). These are a decent replacement for the original diodes.
gear or replacements can be improvised using modern parts.  [[Hewlett-Packard|HP/Avago]] and now Broadcom makes integrated pairs and quads of high-speed Schottky diodes (e.g. HSMS-28xx series). These are a decent replacement for the original diodes.


 
== Possible modern substitutes ==
== modern diode as substitute  ==
{| class="wikitable"  
{| class="wikitable"  
|-
|-
! Type of Diode
! Type of Diode
! Unit
! Tek sampler
! reached risetime
! Measured rise time
! note
! Remarks
|-
|-
| HSMS2822  || [[4S1]]   || 320 ps  || better than specification and very smooth trace
| HSMS2822  || [[4S1]]   || 320 ps  || better than specification and very smooth trace
|-
|-
| HSMS2822  || [[S-2]]   || 120 ps  || don't reached specification
| HSMS2822  || [[S-2]]   || 120 ps  || didn't match original specification
|-
|-
| MMDL301  || [[S-2]]  || 185 ps  || much blowby, not recommend
| MMDL301  || [[S-2]]  || 185 ps  || high blow-by, not recommended
|-
|-
| BAT1704  || [[S-2]]  || 110 ps  || don't reached specification. very smooth trace.
| BAT1704  || [[S-2]]  || 110 ps  || didn't match original specification, but very smooth trace
|-
|-
|}
|}
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<gallery>
<gallery>
4S1_w_hsms2822_modified.JPG  |  4S1 Sampling diode replacing by Avago HSMS2822 Diode.
4S1_w_hsms2822_modified.JPG  |  4S1 Sampling diode replaced by Avago HSMS2822
</gallery>
</gallery>


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