3 displaying text – Matrix Orbital LK202-25 Legacy User 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

LK202-25 please read sections 8.2 and 8.3 (“Issuing Commands” and “On Numbers”).

Matrix Orbital

LK202-25