Raymarine 620 Specifications download pdf (Page 25)

RayChart 620

2.6 Using Chart Cards

The RayChart has a built-in world map. Most areas are covered on a

scale of about 500nm per inch on the screen (200nm per cm), although

some populated areas have details down to 20nm or even 10nm per

inch on the screen. The RayChart displays a scale indicator on the

screen for all chart displays.

For safer navigation, you will need to use larger scale charts with

detailed information. These are available using C-MAP NT electronic

chart cards (C-Cards), each of which can store as many as 20 charts in

an electronic format. A C-MAP chart normally provides as much

information as is available in paper charts for that geographic area, with

detail up to 0.05nm per inch.

The RayChart allows you to install two chart cards at the same time, if

required. You can also use the slots for C-MAP Memory C-Cards, which

allow you to store and retrieve data such as waypoints and routes.

Note: You can insert and remove cards while a chart is displayed. The

previous information is retained until the RayChart redraws the screen:

for example, it will do this if you scroll some way outside the current

area, or use the RANGE key to change the chart scale.

Inserting a Chart Card

➤ To insert a chart card:

1. Check that the card is the correct format (C-MAP NT C-Card), with

the required chart stored on it.

2. Open the card cover, at the top left of the RayChart front panel, by

pushing the latch to the left and then opening the cover as shown in

the illustration on the following page.

3. Hold the card with the printed text pointing towards the right and the

correct way up, as shown in the illustration.

4. Gently push the card into one of the two sockets. It will only go in if it

is the right way round.

Push the card in as far as it will go, then move it to the left so that the

top is under the retaining pegs. Release the card so that it is held in

place by the pegs.

5. Close the card cover so that is clicks shut, to stop water splashing

into the RayChart.

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Raymarine 620 Specifications Page 25