5
Using TrueControl II-550:
1. The default voltages are set at +12V, +5V, and +3.3V. Turn the knob clockwise to increase
output voltage and counterclockwise to decrease output voltage. The range within which
you can adjust the voltage is ±5% of the specified output voltage (see Table 1). Note:
Changing the output settings does not affect the voltage feedback circuitry, so if for
example you set your +5V output to +5.2V, the power supply voltage feedback will operate
to keep the +5V output as close to +5.2V as possible.
2. To adjust the minimum fan speed, turn the knob clockwise to increase the speed. Note: The
manual fan control does not override the built-in Low Noise Technology fan control
circuitry. Turning the knob allows you to change the minimum fan speed. The minimum fan
speed default is approximately 900 RPM. With the adjusting knob, you can set the minimum
fan speed as high as the maximum fan speed of approximately 2100 RPM.
Table 1. Voltage
Adjustment Range
Output
Variation
Min. Voltage
Max. Voltage
+12V
1
& +12V
2
±5%
+11.4V
+12.60V
+3.3V
±5%
+3.14V
+3.47V
+5V
±5%
+4.75V
+5.25V
