Matrix Orbital PK202-25 - Manual (Page 19)

Figure 18: Bypassing 240 ohm Resistor
NOTE The GPOs do not have any over current or over / under voltage protection so care
must be taken when using them. For instance if the external device is a relay it must be
fully clamped (using a diode and capacitor) to absorb any generated back electro-motive
force (EMF). Suggestions for clamping a relay:
Figure 19: Clamping a Relay
3 Displaying Text
This chapter describes the various text display commands in detail. Before issuing commands to the
PK202-25 please read sections 8.2 and 8.3 (‘Issuing Commands’ and ‘On Numbers’).
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