LogTag TRIX-8/TRIX-16 Work Instruction Manual Revision 9.20 Page 10/53
1.2 Crystal mounting
Mount 32768Hz crystal.
Crystal is top soldered with legs passing into holes and flush trimmed on other (non copper) side of PCB.
The Legs are trimmed off flush on non component side of PCB. No more than 0.3mm of cut off length
should remain.
Procedure:
1. Use a fixture to bend and cut the legs of crystal.
2. Add a small drop of acid free cure RTV on crystal location pad.
3. Insert the crystal to PCB.
4. Solder the legs of crystal. Do not apply excessive heat or solder!
Solder joint should be shiny and fully wetted with no excess solder.
The crystal soldering according to the following condition (only legs of the crystal).
a) Keep the Soldering Iron temperature between 190degC and 250degC.
b) Soldering for 5 seconds maximum.
5. Wait for 24 hours for RTV to dry.
6. Clean solder point on the PCB.
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