User manual

Figure 31: Soldering wire bridges to the lateral strip grid
4.5 Soldering Wire Bridges to a Point Grid
If you solder wire bridges to a point grid, push the wire ends to be soldered together
through the bores of the hole grid part of the test PCB. Observe that there is only a small
metal ring around each bore. It is isolated against the adjacent ones. This is called a land.
There is not a lot of space for placing the solder to prevent conductive connections to the
adjacent lands.
Clamp the PCB in the fine mechanics clamp so that you can equip and solder it well from
above. This is the only way to have both hands free for secure soldering. The wire bridges
are installed across the lands. They should have a distance of about 4-5 mm from the PCB
surface. This exercise is also about installing the wire bridges in a visually appealing way.
They should be about parallel to the PCB surface after soldering in.
Individual solder points should be accessible even after the circuit is completed. This per-
mits subsequent modification, as well as de-soldering and re-soldering of components in-
stalled inverted.
Proceed according to exercise 4.4 when soldering. The special challenge is in having to
place the soldering iron tip more precisely and holding it still to prevent wetting the adja-
cent lands with solder or short-circuiting them. Soldering should be completed within
about 5 seconds.
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