7
APEX BOAT ELECTROFISHER
www.smith-root.com
b. 30 Hertz – Moderate frequency is commonly used for more frag-
ile species with increased vertebral count and minimized scales.
c. 60 hertz – Higher frequency is commonly used for more robust
species with decreased vertebral count and thicker scaling.
d. > 60 Hertz - Generally avoided because of increased risk of injury.
iii.
Duty Cycle – Determines the percent-
age of time that the APEX is applying
power every cycle. To modify Duty
Cycle, press DUTY CYCLE button, then
use arrows to increase and decrease
values. Press HELP for a descrip-
tion of Duty Cycle. Once complete,
press BACK button to return to home
screen.
a.
12-15% - A minimal duty cycle
percentage that maintains very short widths for each electrical
pulse. Similar to low frequency, this is commonly used for more
fragile species with increased vertebral count and minimized
scales.
b.
20-40% (~30%) – A duty percentage commonly used for more
robust species with decreased vertebral count and thicker scal-
ing.
iv.
Voltage – Determines the amplitude
of the electrical potential. The voltage
should be set according to environ-
mental conditions, especially ambient
water conductivity. To modify voltage,
press VOLTAGE button, then use ar-
rows to increase and decrease values.
Once complete, press BACK button to
return to home screen.
a.
500 – 1,200 Volts – High voltage is used in very low ambient con-
ductivity water. Additionally, higher voltages are often useful in
deep and wide pools.
b.
150 – 500 Volts – Moderate voltage is typically used in moderate
ambient conductivity waters.
Screenshot: Duty Cycle
Screenshot: Voltage
