Bug #516

Input delay dependent on the source resistance and level

Added by Tomasz Wlostowski on 01 Jun 2012 at 11:07. Updated on 01 Oct 2012 at 17:12.

Status:Closed Start date:2012-06-01
Priority:High Due date:
Assignee:Tomasz Wlostowski % Done:

0%

Category:- Spent time: -
Target version:-

Description

R57 value (220R) was too high, causing integration of the input pulses on the input capacitance. As a result, the input time offset was dependent on the amplitude/resistance of the trigger source.

Fix: use smaller R57 value - tested with 22 ohms (large enough to limit clamping diode current to 1A without significant integration).

To be included in EDA-02267-V4-1.

History

EDA-02267-V4-0 BOM fix: R57 (220R) -> 22R

Updated by Erik van der Bij on 05 Jun 2012 at 15:53

  • Priority changed from Urgent to High
  • Status changed from Resolved to Assigned

Still need to upgrade production files EDA-02267-V4-1.

Updated by Erik van der Bij on 01 Oct 2012 at 17:12

  • Status changed from Assigned to Closed

R57 is 22 Ohm on V5-0 schematics.

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