Furuno FCV295 - Manual (Page 30)

1. OPERATION
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1.19.2 Tx/Rx menu
Tx Power: Interference may appear on the
screen when an echo sounder having the
same frequency as your own is being operat-
ed in the vicinity of your vessel. In this case,
lower your Tx power and contact the vessel to
request them to reduce their Tx power. Tx
power is available in Off, Min, 1-10, and Auto.
Off turns off transmission. Min sets minimum
Tx power. Auto automatically adjusts Tx pow-
er. 1-10 sets desired Tx power; the higher the
value, the more the Tx power. When Tx power
is reduced (Off, Min, 1-9), the indication "P/R"
appears at the top of the display.
Tx Rate: Changes pulse repetition rate, in 20
levels. Normally, the highest rate (20) is used.
When in shallow waters second reflection
echoes may appear between surface and ac-
tual bottom echo. In this case, lower the Tx
rate level. Max changes the Tx rate automat-
ically. S activates the ship's speed dependent
mode, where the TX rate changes automati-
cally with ship's speed. (Requires ship's
speed input.)
Tx Pulse Edge (HF/LF): Turn on to suppress
interference to other acoustic equipment (fish
finders, scanning sonars, etc.), your own and
others.
Tx Pulse (HF/LF): Pulse width changes ac-
cording to range and shift values. When long
range detection is your objective select a long
pulse length. For better resolution, choose a
shorter pulse. Short 1 raises the detection
resolution, however, detection range is short-
er (pulse length is about 1/4 of Std) than the
Std setting. Short 2 raises the detection reso-
lution, however, detection range is shorter
(pulse length is about 1/2 of Std) than the Std
setting. Std is the standard pulse length, and
is suitable for general use. Long Increases
the detection range but resolution is two times
lower compared to the Std pulse length. Man-
ual enables manual setting of pulse length, at
"Pulse Length."
Pulse Length (HF/LF): Operative when Man-
ual is selected at Tx Pulse. A small value
gives better detection resolution, however de-
tection range is shorter. On the other hand, a
large value gives better detection range but
resolution is lower. The setting range is 0.05 -
5.0 (msec).
Rx Band (LF/HF): Rx bandwidth is automati-
cally set according to Tx pulse length. Nor-
mally the Std position provides good
performance. If noise is a problem switch to
Narrow. For better resolution, select Wide.
Target Echo: Set fishing objective. Normal is
for general purpose fishing. Surface is for de-
tecting surface fish. Pulse repetition rate is
higher than "Normal" on the 1kW and 2kW
transducers that are programmed into the
menu. Squid detects squid and other individ-
ual fish. These items are automatically set: Tx
Pulse, Short 1; Echo Stretch, ON, and
Smoothing, Off. Deep Sea is the same as
Normal.
1.19.3 Display menu