
120 BD FACSAria II User’s Guide
2 Verify that the small satellite droplets are
merging with the large droplets.
Satellite-merging is largely dependent on nozzle
position. If the satellites are not merging, you
might need to remove and reinstall the nozzle,
or clean it by sonicating.
The satellite drops should merge into the drops
in 6 satellites or fewer.
3 Enter the actual Drop 1 value as the target in
the Drop 1 field.
The actual value appears in the gray
background next to the Drop 1 field. Once a
valid target has been established, you do not
need to reset it unless you change the nozzle or
your Sort Setup option.
; Tip If the target value causes the Ampl to
exceed 70 volts, perform the recommendations
under step 1 and re-enter the Drop 1 target
value.
4 Turn on the Sweet Spot when the drop pattern
is stable.
The Sweet Spot is designed to automatically
adjust the drop drive amplitude to maintain the
stability of the breakoff point. When the Sweet Spot is on, the Amplitude
and Frequency fields are disabled. The values are automatically adjusted by
the software. For more information, see Breakoff Window on page 62.
See Table 4-1 on page 121 for examples of breakoff patterns at each nozzle
size.
Good breakoff
Poor breakoff
target value
actual value
satellite
drop
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