DE
DANIELS
ELECTRONICS
2-6
VT-3H040 VHF Enhanced Transmitter Instruction Manual
2.5
Repair Note
The transmitter is mainly made up of surface mount devices which should not be removed or
replaced using an ordinary soldering iron. Removal and replacement of surface mount
components should be performed only with specifically designed surface mount rework and
repair stations complete with ElectroStatic Dissipative (ESD) protection.
When removing Surface Mount Solder Jumpers, it is recommended to use solder braid in place
of manual vacuum type desoldering tools when removing jumpers. This will help prevent
damage to the circuit boards.
2.6
Printed Circuitboard Numbering Convention
To ease troubleshooting and maintenance procedures, Daniels Electronics Limited has adopted a
printed circuitboard (PCB) numbering convention in which the last two digits of the circuitboard
number represent the circuitboard version. For example:
• PCB number 43-912010 indicates circuitboard version 1.0;
• PCB number 50002-02 indicates circuitboard version 2.0.
All PCB's manufactured by Daniels Electronics are identified by one of the above conventions.
