Supplying the power (continued)
Using an external DC power supply
1.Connect the external DC power supply to the DC IN socket on this unit.
DC IN socket
External DC power supply 
2.Turn “ON” the external DC power supply switch. (Where the external DC power supply has a power switch)
3.Turn “ON” the POWER switch on this unit.
If an external DC power supply is used, then check the ratings of the external DC power supply so that they are compatible with those of this unit.
Check the pin arrangements of the DC output terminal of the external DC power supply and those of the DC IN socket of this unit so that their polarities are correctly arranged.
If +12 V are supplied to the unit’s GND terminal by mistake, this may cause fire or injury.
DC IN socket
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31: GND
24: +12 V
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<Notes>
•Use a shield cable with a length of 2 m (6.56 feet) or less for the DC cable. Use of cords any longer than 2 m (6.56 feet) may result in noise appearing on the screen.
•If the battery pack and an external DC power supply are connected simultaneously, then the external DC power supply will have priority.
If the external DC power supply is used, then the battery pack may be fitted or removed.
•If an external DC power supply is used, then make sure that the external DC power supply is first turned ON, then this unit is turned ON. If they are turned ON in the reverse order, then this unit may malfunction, because the output voltage of the external DC power supply will gradually increase.
•Input voltage that above the specification is not displayed accurately.
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