SV Sound SX-VT - Manual (Page 10)

SX-ST / SX-SV User Manual page 10
2.4 AC Power Mode (SX-VT Series only)
The connection of mains the power supply is made by using a mains cable and a standard IEC receptacle. It
meets all of the international safety certification requirements.
Please make sure that the unit has a proper ground connection. For your own safety, it is advisable not to
remove the ground connection at the power supply or fail to make this connection at all.
2.4.1 Operating voltage switch
The external Main Power Supply is designed for an AC voltage range from 100 to 260V AC, 40Hz to 60Hz
without any modification.
3. OPERATING INSTRUCTIONS
3.1 Switching ON your SONOSAX SX-ST / SX-VT mixer
The POWER ON switch is located on the Master Module at the right side of the lower level meter. Turn to
Power position to activate the internal DC/DC Converter that will power up your mixer. The green LED should lit
up within 2 to 3 seconds, if not:
•
Check that batteries have been inserted correctly inside the battery compartment.
•
If necessary change the batteries.
•
Check the external DC Power supply
3.2 Using an External DC Power Supply
Apply External DC Voltage from 10,5 to 18VDC (see 1.6) between points 4 (+Vdc) and 1 (0V) of the XLR-4
connector. The external DC power supply must be regulated and capable to deliver a continuous current of at
least 2,5 Amp
3.3 Battery Test
When the BATT TEST momentary switch, located below the Level Meters, is depressed, the lower level meter
will indicate the average charge per cell (minimum 1V, maximum 1.5V).
3.4 Low Battery Alarm
When the average charge per cell reaches 1.05V, the Low Batt LED will automatically start to blink. This alarm
means that about 10 to 20 minutes remain before the mixer automatically turns off. This auto-stop protects the
accumulators from excessive discharge.
3.5 Automatic changeover of power source (SX-ST Series only)
The internal DC/DC converter circuitry is designed to automatically changeover between the internal batteries
and the external DC power supply. You do not need to power OFF the SX-ST to change the power source.
While powering up the mixer, when both the external DC power supply is connected and the internal batteries
are installed, the internal DC/DC converter will first connect to the external DC power supply even if the external
DC voltage is lower than the battery pack voltage. If the external power voltage drops below 10.5 Volts then the
DC/DC converter will automatically switch to the battery pack
When the voltage of the internal batteries drops below 1.00V per cell the DC/DC converter will switch
automatically to the external DC power supply if connected to the mixer after the power up procedure.
NOTE: there is absolutely no noise, pops or clicks during a power source changeover