Bio-Rad PowerPac™ Basic Power Supply - Manual (Page 10)

Section 3
Setup and Operation
STEP PROCEDURE DESCRIPTION
1. Turn power on. Press the power switch located on the right
side of the unit to the on position.
The default setting is constant V, and the
LED display shows zero value.
To display firmware version number, hold
down constant parameter key while turning
the power switch to the on position.
2. Connect the electrophoresis The power leads are color coordinated to
cell(s) to the power supply. the output terminals in red and black.
indicates high voltages.
Note: Power leads must be inserted
perpendicular to the curve of the case.
Fig. 5. Power leads connected correctly. Fig. 6. Power leads connected incorrectly.
3. Select the constant parameter Press the Constant key to select the
constant parameter, either voltage or
or
current The LED on the parameter key
corresponding to the selected constant
parameter will light up. The display shows
the zero value for the constant parameter.
4. Enter a value for the constant Use the scroll key to enter the desired value.
parameter using the scroll key. Voltage: 10–300V adjustable in 1V increments.
Current: 4–400 mA adjustable in 1 mA
increments.
Note: If the scroll key is pressed constantly
for more than 5 units in either direction, +/-,
the values will increase/decrease in
increments of 10 to reach the desired value
faster.
5. Enter value for limit parameter. Use the parameter key to select the limit
For volts
parameter. The maximum default value,
300V or 400mA, is displayed. Select a suitable
limit value to avoid excessive power
For milliamperes conditions for the application.
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