LMS-6 Radiosonde: Difference between revisions
Paul Rixon (talk | contribs) Added pic of mod; clarification of mod; Deleted duplicated image |
Paul Rixon (talk | contribs) SP1 connection endpoints |
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| Line 237: | Line 237: | ||
|2 | |2 | ||
|Unknown | |Unknown | ||
|3V rounded square pulses, 2x per second, 2 different periods avg ~75msec? | |U14 Pin 13 (A0) - 3V rounded square pulses, 2x per second, 2 different periods avg ~75msec? | ||
|- | |- | ||
|3 | |3 | ||
| Line 245: | Line 245: | ||
|4 | |4 | ||
|Unknown | |Unknown | ||
|5V, 0.1msec pulse once per second | |U14 Pin 14 (A1) - 5V, 0.1msec pulse once per second | ||
|- | |- | ||
|5 | |5 | ||
| Line 253: | Line 253: | ||
|6 | |6 | ||
|Unknown | |Unknown | ||
|5V, 0.1msec pulse once per second | |U14 Pin 15 (A2) - 5V, 0.1msec pulse once per second | ||
|- | |- | ||
|7 | |7 | ||
| Line 261: | Line 261: | ||
|8 | |8 | ||
|Unknown | |Unknown | ||
|3V, 250msec pulse once per second | |U14 Pin 12 (A3) - 3V, 250msec pulse once per second | ||
|} | |} | ||
SP1 connects to four channels of U14, an 8-channel analog MUX. Pin 2 also connects to R111, non-populated, which would provide a pull-up to +5 at Pin 1. | |||
==Components== | ==Components== | ||