Bio-Rad CHEF Mapper® XA System - Manual (Page 29)

When interrupts have been requested, the Block 1 interrupt is programmed from the
following screen:
Blk1 Interrupt Parameters: These interrupt parameters can be used with any state in Block 1.
Note: If you don’t want interrupts for Block 1 but want to use them for other blocks, you
must enter values at this prompt. Put in 1 for each entry. When you enter the run param-
eters for each state in this block, enter 0 (no) when the prompt asks for interrupts.
V/cm: Enter the voltage gradient for the interrupt using the number key pad, and press
ENTER. The voltage gradient can be from 0.6 V/cm to the same values as the voltage gradi-
ent for the states used in the block. A value greater than that of the states can be entered, but
the actual value will not exceed that of the states.
Ang: Enter the angle for the interrupt vector, and press ENTER. The angle entered must be
in degrees, between 0 and + or - 180°. The display back will appear in the prompt if the inter-
rupt angle of 180° from the vector was selected in the first screen.
Length: To enter the interrupt duration, enter the numeric value, push HOURS, MINUTES,
or SECONDS, then ENTER. The allowable switch time range is 0.05 seconds–59 minutes,
59 seconds.
Freq: This is the frequency of interrupts for a particular period. Enter the frequency by enter-
ing the numeric value, then ENTER. The next prompt is for the time unit. Press SECONDS,
MINUTES, or HOURS. The allowable ranges are 1–99 seconds, 1–99 minutes, 1–99 hours.
The time unit of the frequency cannot exceed that of the length. If such a value is chosen, the
system will not accept the value.
After the interrupt values are entered for a block, the screen will ask for the first vector
(State 1) of the block.
Blk1 St01: This indicates that you are in Block 1, State 1.
Intrp: If interrupts are to be run in this state, enter 1. If interrupts are not to be run in this
state, enter 0. Proceed as prompted to program all of the states and blocks.
Blk1 St01 [ ]V/cm a = [ ]
Ang = [ . .
Blk1 [ . ] V/cm
Angl [ Length = [ / [ ]
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