14
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LR-24
BACKPACK ELECTROFISHER
POWER LIMIT KEY
The Power Limit key allows the user to pre-set an output
limit where desired for safety considerations.
When the Power Limit key is pressed, the setting is
displayed and can be changed by using the Arrow and
Enter keys (
Fig. 2.23
).
Pressing the Power Limit key again will abort this function
and return you to the main status display. Pressing
another key will abort this function and move to the setup
display of the key that was pressed. The power is limited
by lowering the output voltage or frequency, which the
user selects from the Limit Mode option under the Menu
key. The minimum output voltage is 50 volts. If this lower
voltage limit is reached and the power limit is still being
exceeded, the LR-24 will shutdown its output and an error
message will be displayed. This control does not affect
the output unless the user set power limit is reached. The
power limit cannot be set higher than 400 watts average
output power.
In Burst of Pulses mode, if the power limit is reached,
and if the limit mode is set to frequency, only the cycle
frequency will be reduced. The frequency of the pulses in
the burst is not changed. For an explanation of cycle and
burst frequencies, see Pulse Type, below.
PULSE TYPE KEY
Allows the user to enter the output waveform of the
LR-24. Available waveforms are Direct Current, Standard
Pulse, and Burst of Pulses.
The output pulse type can be changed by using the Up
or Down Arrow keys (
Fig. 2.24
). When Direct Current is
selected, the output of the LR-24 is smooth Direct Current
at the selected voltage and power limit settings.
Standard Pulse is a waveform that produces continuous
output pulses of the selected voltage, duty cycle,
frequency, and power limit. For example, 60Hz 25% duty
cycle 300 volts and 100 watts average power limit would
produce a 300 Volt pulse 4.2 milliseconds wide, (25%
duty cycle), 60 times per second unless the power limit of
100 watts average power is reached. If the power limit is
reached, the LR-24 will automatically reduce the output
voltage or frequency, whichever one the user has selected,
to maintain 100 watts average output power. See pages
30-32 for more information about setting the Pulse Type.
Power Limit
400W
Fig. 2.23
Pulse Type
Standard Pulse
Fig. 2.24
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Power Limit Key
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Menu
Volts
Freq.
Enter
Power
Limit
Store
Setup
Recall
Setup
Duty
Cycle
Pulse
Type
Pulse Type Key
SECTION 2: DISPLAY PANEL (CONT.)