Raleigh PEDELEC IMPULSE EVO Notice Originale page 171

6.4.3.12 Impulse Evo (Smart) display: Navigation
indicator sound
Path: Settings | Device settings | Display | Navigation indicator sound
Proceed as follows if you want to be made aware of turns by an audible
sound:
1. Navigate to "Navigation indicator sound" as described in
Configuring settings in the main menu Page
You can choose between:
Normal Quiet Quiet, short
2. Use the / buttons to select the desired option. The selection is
highlighted. An audible sound is emitted at the same time - which
makes you aware of turns in the future too.
3. Confirming the audible sound with returns you to sub-level 2.
EN-64 Original User Guide | Pedelec Impulse Evo / Impulse Evo Next Version 4
 6.4.1
EN-54.
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6.4.3.13 Wheel circumference
Path: Settings | Device settings | Drive | Wheel circumference
Ask your cycle dealer for the wheel circumference.
Alternatively, you can measure it yourself:
1. Wheel diameter in mm x 3.14 = wheel circumference in
mm.
2. Push the bike for one complete revolution of the wheel
and measure the distance travelled on the ground in
mm.
Calculation
Tyre height x 2 + rim diameter x 3.14 mm = wheel
circumference
e.g. [( 42 x 2 ) + 622 ] x 3.14 mm = 2,037 mm
mm x 3,14
1x