Appendix B - Connection Of An External Supply - Hagstrom KE24 User Manual

Appendix B:
Connection of an External 5 Volt Supply
When using the KE24 in an application that does not require
connection to a PC (such as an RS-232 keypad interface), an
external 5 volt power supply must be used. The KE24 has a
connection point that is dedicated for this purpose.
Ground
Connection
+5 Volt
Connection
Two solder points are supplied for attaching external wires or a
connector to the KE24 to supply the 5 volts.
Special care must be taken to assure the proper polarity of the
voltage. The supply must be within 4.75 to 5.25 volts DC.
Note: Reverse connection of the supply voltage will permanently
damage the unit. Use 5 volt source only. Do not attempt this
connection if you are uncertain of your power supply voltage or
polarity.
NEVER attach a KE24 that is powered from an external source
to a PC, as this may damage the KE24, the computer, and/or your
supply.
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