Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision | |||
|
installation:cablelength [2024/02/15 10:59] fachet |
installation:cablelength [2024/02/15 11:05] (current) fachet old revision restored (2019/07/10 14:58) |
||
|---|---|---|---|
| Line 12: | Line 12: | ||
| var l = document.form.l.value; | var l = document.form.l.value; | ||
| var d = document.form.d.value; | var d = document.form.d.value; | ||
| - | var ag = document.form.ag.value; | ||
| | | ||
| f = f.replace(/,/, "."); | f = f.replace(/,/, "."); | ||
| Line 24: | Line 23: | ||
| ra = a - kl; | ra = a - kl; | ||
| rfd = 20 * log10(f * Math.pow(10, 9)) + 20 * log10(ra) - 147,55; | rfd = 20 * log10(f * Math.pow(10, 9)) + 20 * log10(ra) - 147,55; | ||
| - | g = kd + rfd + ag; | + | g = kd + rfd; |
| ge = fd - g; | ge = fd - g; | ||
| | | ||
| fd = fd.toFixed(2) | fd = fd.toFixed(2) | ||
| rfd = rfd.toFixed(2) | rfd = rfd.toFixed(2) | ||
| - | ag = ag.toFixed(2) | ||
| g = g.toFixed(2) | g = g.toFixed(2) | ||
| ge = ge.toFixed(2) | ge = ge.toFixed(2) | ||
| Line 38: | Line 36: | ||
| document.form.ra.value = ra; | document.form.ra.value = ra; | ||
| document.form.rfd.value = rfd; | document.form.rfd.value = rfd; | ||
| - | document.form.ag.value = ag; | ||
| document.form.g.value = g; | document.form.g.value = g; | ||
| document.form.ge.value = ge; | document.form.ge.value = ge; | ||
| Line 48: | Line 45: | ||
| <input name="a" /> Gesamtabstand / total distance (m)<br> | <input name="a" /> Gesamtabstand / total distance (m)<br> | ||
| <input name="l" /> Kabellänge / cable length (m)<br> | <input name="l" /> Kabellänge / cable length (m)<br> | ||
| - | <input name="d" /> Kabeldämpfung / attenuation (dB/m)<br> | + | <input name="d" /> Kabeldämpfung / attenuation (dB/m)<br> |
| - | <input name="ag" /> Antennengewinn / antenna gain (dB/m)<br> | + | <br> |
| <input type="button" name="submit" value="berechnen / calculate" onclick="berechnen();"> <br> | <input type="button" name="submit" value="berechnen / calculate" onclick="berechnen();"> <br> | ||
| Ohne Antennenkabel / without anntenna cable:<br> | Ohne Antennenkabel / without anntenna cable:<br> | ||
| Line 59: | Line 56: | ||
| <input name="ra" value="0" disabled="disabled"> Restabstand / remaining free space<br> | <input name="ra" value="0" disabled="disabled"> Restabstand / remaining free space<br> | ||
| <input name="rfd" value="0" disabled="disabled"> Freiraumdämpfung / free space loss<br> | <input name="rfd" value="0" disabled="disabled"> Freiraumdämpfung / free space loss<br> | ||
| - | <input name="ag" value="0" disabled="disabled"> Antennengewinn / antenna gain<br> | ||
| <input name="g" value="0" disabled="disabled"> Gesamtdämpfung / total loss<br> | <input name="g" value="0" disabled="disabled"> Gesamtdämpfung / total loss<br> | ||
| <br> | <br> | ||