Raymarine C140w - Manual (Page 169)

Menu Item Description Options
Ping Rate Limit (per
second) Provides a speed limiter;
it is useful to adjust
the ping rate to suit
local conditions. For
example, the ping rate
may be too fast when
there is a hard bottom
in shallow water. This
setting reverts to 26
pings per second when
the DSM unit is powered
off. 5 to 30 pings per second
(30 default)
Ping Enable The sonar ping is
normally enabled. It
can be disabled. This
is useful when other
equipment is being
tested, or if someone is
diving beneath the boat.
This setting reverts to
Enabled when the DSM
unit is powered off. Disabled, Enabled
Fishfinder Transducer Calibration
Your fishfinder transducer must be calibrated correctly to achieve
accurate depth readings.
The multifunction display receives the image from a DSM which
processes sonar signals from a transducer mounted in the water.
If the transducer is equipped with a speed paddle wheel and
temperature-sensing thermistor, the DSM calculates speed and
temperature. To ensure accurate readings, it may be necessary to
calibrate the transducer(s) by applying offsets to depth, speed and
temperature. As these settings are held in the DSM and relate to
the transducer, they are applied system-wide.
Fishfinder transducer settings
Menu Item Description Options
Select Transducer Select the appropriate
transducer type from
those displayed. • B256/M256
• B260/M260/SS560
• R99/R199
• B258
• SS270/B264
• , B164
• R209/R299
Select Speed
Transducer Select the appropriate
speed transducer from
those available. This
option is only available
if you are not using a
combined Depth/Speed
or Depth/Speed/Tem-
perature transducer. • NONE
• UNKNOWN
• B120/P120 ST600
• ST69
• B120/P120 ST800
• CS4500
Frequency Calibration Fine tune the frequency
of the transducer. • 200 kHz. Tune from
180 to 220 kHz
• 50 kHz. Tune from 45
to 55 kHz
Using the fishfinder 169