LR-24 Electrofisher - Field Environmental Instruments

LR-24
BACKPACK ELECTROFISHER
Display Panel Menu Key Descriptions (Cont.)
Fig. 2.8
Fig. 2.9
System Menu 2 : Dual Output
Dual output on/off allows the user to turn dual output mode on or
off. Dual output mode allows the user to set up and switch between
two completely independent sets of waveforms and voltages by
simply releasing and pressing the anode pole switch in less than 1
second. The primary waveform and voltage, the one entered first,
is the one activated when press the anode pole switch the first time.
The secondary waveform and voltage is activated by releasing and
pressing the anode pole switch in less than 1 second. This feature
allows the user to change voltages and waveforms quickly. This
can help reduce injuries to adults when collecting young of the year.
When using a low frequency waveform to get catfish to move off the
bottom and then quickly changing to a higher frequency waveform to
collect them. Any combination of pulse types, voltages, frequencies,
duty cycles and power limits may be used for the two outputs in dual
output mode. To see or make changes to either the primary or secondary
waveform, from the main status waveform screen, press the
Up arrow key until the display shows the primary waveform. Make
changes using the volts, freq. and duty cycle keys. Pressing the Up
arrow key one more time will display the secondary waveform and
may make changes to it in the same way the primary waveform was
changed. To change back to the primary waveform, release the pole
switch for more than 1 second and then press it again.
System Menu 3: Power Limit Mode
This menu item allows the user to select the method for controlling
the maximum average output power of the LR-24. If the user-set
power limit is reached, the LR-24 will automatically decrease the
output voltage or frequency, as selected by the user, to maintain the
output power at that limit. If the output power drops below the limit
then the LR-24 will automatically increase the voltage or frequency
back to the user set value.
Fig. 2.10
System Menu 4: Thermal Power Fold Back Mode
This menu option allows the user to turn Thermal Power Limiting
on or off. On hot days, when the LR-24 is putting out 200 watts or
more, it may eventually overheat and shut down to prevent possible
damage to the electronics. Thermal Power Limiting allows the LR-
24 to better control the amount of internal heat being produced and
in many cases can prevent thermal shutdown. This feature allows the
LR-24 to continue to function in hot environments where it would
otherwise shutdown. When this option is turned on the LR-24 will
automatically reduce its output frequency if one of the pulsed outputs
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