File:Panel Decoder Test Frame and trouble indicator panel.jpg
Original file (2,000 × 2,972 pixels, file size: 3.16 MB, MIME type: image/jpeg)
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Summary[edit]
DescriptionPanel Decoder Test Frame and trouble indicator panel.jpg |
The purpose of the Panel Decoder Test Frame was to run routine tests on each Decoder. This was generally done during light traffic because the Decoder under test was not available for regular call processing. The purpose of the trouble indicator panel was to display via lamps the status of the failed Decoder operation. A minor alarm would also sound. If other errors occured they were lost until the trouble indicator panel was reset as it had no memory. If a Decoder actually failed its internal relay logic checks either during setup connection to a Sender or during release of the Sender a local "very loud" gong would start ringing activating aisle pilot indicator lamps. Since a reasonable sized Panel office only had three Decoders during peak traffic you could not afford to have one out of service. |
Date | 9 January 2009 (original upload date) |
Source | No machine-readable source provided. Own work assumed (based on copyright claims). |
Author | No machine-readable author provided. Panel Switchman assumed (based on copyright claims). |
Licensing[edit]
Public domainPublic domainfalsefalse |
I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:24, 9 January 2009 | 2,000 × 2,972 (3.16 MB) | Panel Switchman (talk | contribs) | The purpose of the Panel Decoder Test Frame was to run routine tests of each Decoder. This was generally done during light traffic because the Decoder under test was not available for regular call processing. The purpose of the trouble indicator panel wa |
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Orientation | Normal |
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Horizontal resolution | 400 dpi |
Vertical resolution | 400 dpi |
Software used | Adobe Photoshop 7.0 |
File change date and time | 16:01, 10 April 2007 |
Color space | Uncalibrated |