File:Oscilloscope on ISDN2e outer pair, idle line.png
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![File:Oscilloscope on ISDN2e outer pair, idle line.png](https://upload.wikimedia.org/wikipedia/commons/thumb/8/85/Oscilloscope_on_ISDN2e_outer_pair%2C_idle_line.png/800px-Oscilloscope_on_ISDN2e_outer_pair%2C_idle_line.png?20120711221310)
Size of this preview: 800 × 530 pixels. Other resolutions: 320 × 212 pixels | 640 × 424 pixels | 1,024 × 679 pixels | 1,280 × 848 pixels | 3,039 × 2,014 pixels.
Original file (3,039 × 2,014 pixels, file size: 7.57 MB, MIME type: image/png)