FF585c_Man_English_531363-1_B.qxd 12/27/2004 8:33 PM Page 46

Finding the Cause of Noise

Electrical noise usually affects the display with many black dots at high speeds, and high sensitivity readings. One or more of the following sources can cause noise or interference:

Possible Source of Noise

How to Isolate It

Other electronic devices

Turn off any nearby electronic devices to see if the

 

problem goes away, then turn them on one at a time to

 

see if the noise re-appears.

The boat’s engine

To determine whether the boat’s engine is the source of

 

the noise, increase the RPMs while the boat is in neutral

 

and stationary to see if the noise increases

 

proportionately; if noise appears when you rev the

 

engine, the problem could be the spark plugs,

 

alternator, or tachometer wiring. Replace the spark

 

plugs with resistor plugs, install an alternator filter, or

 

route the control head power and transducer cables

 

away from the engine wiring.

Cavitation from the boat’s

Turbulence created by the propeller can cause noise;

propeller

make sure the transducer is mounted at least 15”

 

(38 cm) from the propeller, and that the water flows

 

smoothly over the face of the transducer at all times.

Humminbird® Fishfinder Accessories

Accessories customize the Humminbird® to your needs and enable you to stay on the edge of new technology and to catch more fish. When an accessory is connected to the system, additional menus and readouts are added automatically to your Humminbird® menu system. Accessories available today that are supported by your Humminbird® include:

Temperature/Speed: simply plugs into the Humminbird® control head and provides real time speed and temperature readouts, as well as a valuable Triplog function.

NOTE: If an external Temperature/Speed (TS-W) or Temperature (TG-W) accessory is connected AND a transducer with temperature built in is connected at the same time, the TS-W or TG-W accessory will override the temperature built in to the transducer.

Be sure to check out our website www.humminbird.com for additional new and exciting accessories to grow your Humminbird® FishFinder!

NOTE: Accessories require a separate purchase.

Specifications

Depth Capability

1000 ft (330 m)

Power Output

300 Watts (RMS)

 

2400 Watts (Peak to Peak)

Operating Frequency

200 kHz Single Beam

Area of Coverage

20° @ -10 dB in 200 kHz

Target Separation

2½ Inches (63.5 mm)

Power Requirement

10-20 VDC

LCD Matrix

320 V x 240 H TFT Color

Transducer

XHS-9-20-T

Transducer Cable Length

20 ft (6 m)

Product specifications and features are subject to change without notice.

40

41

Page 24
Image 24
Humminbird 585C manual Finding the Cause of Noise, Humminbird Fishfinder Accessories, Specifications