Bug #658

Fix 401.1 - Signal switching; zero cal switch

Added by tin over 6 years ago. Updated over 3 years ago.

Status:ClosedStart date:13/01/2013
Priority:NormalDue date:13/01/2013
Assignee:tin% Done:

50%

Category:-Estimated time:1.00 h
Target version:Keithley 2001 #6

Description

Failure: Cannot measure 0V ±0.001V at A/D IN.

Common is routed to the ACF line through U526 (SHORT pulled low). ACF is then
routed through multiplexer U511. The output of the multiplexer (OUT) follows the
same path to the A/D buffer (U322) as the 400 series tests. U322 is conÞgured for x1 gain. Measure 0V at A/D IN.

Replace U526
Replace U511

History

#1 Updated by tin over 6 years ago

U511 replaced
U526 replaced
R277 replaced
U510 replaced
U532 replaced
U522 replaced

#2 Updated by tin almost 6 years ago

  • Description updated (diff)

#3 Updated by tin almost 6 years ago

  • Status changed from New to Resolved
  • % Done changed from 0 to 50

Само полечилось? :)

#4 Updated by tin almost 6 years ago

  • Status changed from Resolved to In Progress

Не полечилось..

#5 Updated by tin about 5 years ago

  • Target version changed from Keithley 2001 #7 to Keithley 2001 #6

#6 Updated by tin over 3 years ago

  • Status changed from In Progress to Closed

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