Bio-Rad PowerPac™ Universal Power Supply - Manual (Page 13)

Step Procedure Description
8. Set the key chirp mode Press the CHIRP soft key to turn key chirp on
or off.
KEY CHIRP = OFF: No sound is
produced when a key is pressed. This
does not affect alarms.
KEY CHIRP = ON: A chirp noise is
heard every time a key is pressed.
9. Set the clock Press the CLOCK soft key to display the clock
settings screen. Use the PREV and NEXT soft
keys to move the cursor between the day,
date and time fields. The up and down arrow
keys are used to set the day and month and
the keypad is used to enter the date and time
values.
Press the SET soft key to accept the new day,
date and time values.
Press Setup once to return to the previous
screen or twice to exit setup mode.
Note: The PowerPac Universal contains an
internal battery to maintain the clock settings
during power off.
3.2 Manual Mode Operation
This section describes how to program and perform a run in manual mode.
In the Manual mode the user can program and start a single step method with a
minimum number of keystrokes. This single step method is not stored in
permanent memory; however, the run parameters are kept in the flash memory
until the PowerPac is turned off. This allows repeating the same run without having
to re-enter the values.
Step Procedure Description
1. Set up the power supply Refer to Section 3.1 for instrument setup.
2. Select a run mode From the Home screen, press the MANUAL
soft key to perform a single step run in manual
mode or press METHODS to run a multi-step
method (see Section 3.3).
3. Select a constant Use the soft keys to select the constant
parameter parameter and the keypad to enter its value.
The constant parameter is displayed in large
font. If the run will be performed as an
un-timed run at the displayed maximum limit
values for the non-constant parameters
(shown to the right of the constant parameter)
skip to Step 6, otherwise press the EDIT key.
ConstV:
Used to run with constant voltage.
ConstA: Used to run with constant current.
ConstW: Used to run with constant power.
7
Tue
CONTRAST: 95
KEY CHIRP: ON
27-May-03
CLOCK CONTRAST CHIRP
11:22
Tue
CHANGE DAY W/ARROWS.
CONTRAST: 95
KEY CHIRP: ON
27-May-03
PREV NEXT SET
11:22
SELECT MODE
MANUAL METHODS
TIME: UNTIMED
EDIT CONSTANT
CONSTA CONSTW
2500
500
mA
W
CONST V
0 V