Section 2.0 Control Features; Front Panel Controls And Indicators - BIO RAD PowerPac 200 Instruction Manual

Control Features
2.0 CONTROL FEATURES
The front panel keys discussed in Table 1 are used to set up and run the PowerPac 200 and PowerPac 300
power supplies.
POWER PAC 200
V
A
– + – +
Key
V
CONST
A
PowerPac 200 PowerPac 300
V V
A mA
1
2
6
Table 1.

Front Panel Controls and Indicators

V
CONST
A
– + – +
Selects whether voltage or current is to be constant.
Constant key:
Selects the parameter (volts, milliAmps/Amps, or time) to be
Parameter key:
displayed.
Changes the displayed value of the selected parameter.
Scroll keys:
• PowerPac 200: Voltage and current values change in 1V or 0.01 A
steps respectively. Holding either key down more than 1 sec. changes
values in 10V or 0.1 A steps.
• PowerPac 300: Voltage and current values change in 1V or 1 mA
steps respectively. Holding either key down more than a few seconds
changes values in 10V or 10 mA steps.
• Time is specified in minutes, with a maximum of 999 minutes.
Starts and stops the output of power from the power supply.
Start/Stop key:
The indicator is lit when power is being output.
1. : Turns the power supply on and off. To turn the unit on,
Power switch
press the side labeled "l" on the switch; to turn the unit off, press the
side labeled "O".
2.
Power-on indicator
POWER PAC 300
V
mA
– + – +
Description
: This is lit when the power switch is turned on.
POWER PAC
V
CONST
A
– + – +