Hardware Detail
©
2004-2012 Sure Electronics Inc
AA-AB34181_Ver1.0_Page 6
FIGURE 2-5 VOLUME CONTROL
TABLE 2-3 DIP SWITCH SW1/SW2/SW3 SETTING
Switch K1 K2 Gain
Status(dB)
ON ON Weak
OFF ON
Low
ON OFF Medium
SW1/SW2/SW3
OFF OFF High
2.6 Mode Selection
The three operation modes of this board are set by the DIP switch SW4.
y
Standby mode:
all circuits are turned off, very low current consumption.
y
Mute mode:
inputs are connected to ground and the positive and negative PWM
outputs are at 50% duty cycle.
y
Play mode:
the amplifiers are active.
FIGURE 2-6 MODE SELECTION
