Elapsed time meter: Difference between revisions

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* [[5110|5110 Mod.WP]]
* [[5110|5110 Mod.WP]]
* [[7503]] – Curtis Indachron, Tek P/N 149-0030-00, run from +5 V via 3.9 MΩ.  Located on rear of main interface board.
* [[7503]] – Curtis Indachron, Tek P/N 149-0030-00, run from +5 V via 3.9 MΩ.  Located on rear of main interface board.
* [[7L5]] - Curtis Indachron, located on rear of digital storage and averaging board. Shown as M4770 on pg 217 of service manual.  
* [[7904]] SN B010100-B079999 – Curtis Indachron, Tek P/N 149-0030-00, run from +5 V via 3.9 MΩ.  Located on rear of main interface board.
* [[7L5]] Curtis Indachron, Tek P/N 149-0030-00, run from +5 V via 3.9 MΩ.  Located on rear of digital storage and averaging board. Shown as M4770 on p.217 of service manual and p.95 (7-17) in parts list.
* ...
* ...
==Links==
* [[Media:Component_news_105.pdf|Tek Component News No.105, May 1969]] – Elapsed Time Indicator, TEK PN 149-0030-00


[[Category:Electromechanical components]]
[[Category:Electromechanical components]]
[[Category:Repair issues]]
[[Category:Repair issues]]

Latest revision as of 04:20, 20 June 2024

Some Tektronix instruments up to the late 1980s contained electrochemical elapsed time meters based on the Mercury coulometer principle.

Curtis elapsed time meter (149-0030-00) in a 7503 scope
Elapsed time meter on A70 board in a 2794 spectrum analyzer

In case of disposal, this component will need to be handled according to local regulations dealing with parts containing mercury.

Instruments known to contain mercury-based elapsed time meters are

  • 2336YA
  • 490-Series spectrum analyzers Located on the A70 Z-axis & RF interface board
  • 5110 Mod.WP
  • 7503 – Curtis Indachron, Tek P/N 149-0030-00, run from +5 V via 3.9 MΩ. Located on rear of main interface board.
  • 7904 SN B010100-B079999 – Curtis Indachron, Tek P/N 149-0030-00, run from +5 V via 3.9 MΩ. Located on rear of main interface board.
  • 7L5 – Curtis Indachron, Tek P/N 149-0030-00, run from +5 V via 3.9 MΩ. Located on rear of digital storage and averaging board. Shown as M4770 on p.217 of service manual and p.95 (7-17) in parts list.
  • ...

Links