Elapsed time meter: Difference between revisions
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[[File:Mercury coulometer.jpg|300px|thumb|right|Curtis elapsed time meter (149-0030-00) in a [[7503]] scope]] | [[File:Mercury coulometer.jpg|300px|thumb|right|Curtis elapsed time meter (149-0030-00) in a [[7503]] scope]] | ||
[[File:2794_A70_ElapsedTimeMeter.jpg|300px|thumb|right|Elapsed time meter on A70 board in a [[2794]] spectrum analyzer]] | |||
Some Tektronix instruments up to the late 1980s contained electrochemical '''elapsed time meters''' based on the [[wikipedia:Mercury coulometer|Mercury coulometer]] principle. | Some Tektronix instruments up to the late 1980s contained electrochemical '''elapsed time meters''' based on the [[wikipedia:Mercury coulometer|Mercury coulometer]] principle. | ||
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Instruments known to contain mercury-based elapsed time meters are | Instruments known to contain mercury-based elapsed time meters are | ||
* [[2336YA]] | * [[2336YA]] | ||
* [[49X_Series_Comparison|490-Series spectrum analyzers]] Located on the A70 Z-axis & RF interface board | |||
* [[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. | ||
* [[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 03:20, 20 June 2024
Some Tektronix instruments up to the late 1980s contained electrochemical elapsed time meters based on the Mercury coulometer principle.
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
- Tek Component News No.105, May 1969 – Elapsed Time Indicator, TEK PN 149-0030-00