Bio-Rad CHEF-DR® III Variable Angle System - Manual (Page 11)

Block Program from 1–3 Blocks. Block 1 is run first, then Block 2, then
Block 3. A run time of 0 disables a Block.
Initial Switch Time Adjust from 0.1–65K seconds.
Final Switch Time Adjust from 0.1–65K seconds.
Run Time Adjust from 0.1–999 hours. A run time of 0 disables a Block.
Volts/cm Adjust from 0.6–9.0 volts in 0.1 volt increments.
Included Angle Adjust from 90–120° in 1° increments.
Actual Current Displays the current, in mA, provided by the power supply. This
parameter is not adjustable.
Run Program
When the parameters are set, start the program by pressing PAUSE/START RUN. When
the program is in progress, the left panel display will show the time remaining (hours) in the
current Block with RUN TIME lit, and the right panel display will show the actual current (mil-
liamps) with ACTUAL CURRENT and PAUSE/START RUN lit. After the program is start-
ed, it is not possible to edit any of the run parameters. During a run, the RAISE and LOWER
keys are disabled and the remaining keys will operate as follows:
Block Displays the current Block.
Initial Switch Time Displays the set initial switch time for 3 seconds, then displays the
remaining time for the current Block.
Final Switch Time Displays the set final switch time for 3 seconds, then displays the
remaining time for the current Block.
Current Switch Displays the current switch time for 3 seconds, then displays
Time the remaining time for the current Block. This display is activated
by pressing INITIAL SWITCH TIME and FINAL SWITCH TIME
simultaneously.
Run Time Displays the set run time for the current Block for 3 seconds then
displays the remaining time for the current Block.
Volts/cm Displays the set voltage gradient for the current Block for 3 sec-
onds then displays the actual current (in mA) for the current Block.
Included Angle Displays the set included angle for the current Block for 3 seconds,
then displays the actual current (in mA) for the current Block.
Actual Current Displays the actual current for the Block in progress. The indicator
light should be on during a run. If the power supply is at current
limit (500 mA maximum), the light will flash.
Pause/Start Run Initially, this starts the program and the indicator light will be lit.
While the program is running, pressing this key will put the pro-
gram into PAUSE and the light will flash. Pressing the key again
will restart the program.
In a multi-block program it is possible to examine the run parameters of any Block that
is not currently being displayed by pausing the CHEF-DR III system. While in PAUSE, the
RAISE and LOWER keys are active to scroll through any of the three Blocks. Any parame-
ter in a Block may be displayed by pressing the appropriate key. Editing of run parameters is
not possible once the program has started.
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