Apollo SL Instalační manuál stáhnout pdf (Strana 58)

Serial Interface Specifications

50 Apollo SL50 / SL60 Installation Manual

COMM DATA OUTPUT

The format of the comm data output is as follows. This data output is compatible with the

SL40 for sending frequency data to the comm.

Baud rate: ..........................................9600

Data bits: ...........................................8

Stop bits: ...........................................1

Parity: ................................................none

Output rate: .......................................approx 2 seconds

Message length: ................................variable, approx 83 to 484 characters

The comm data is output using the following format.

$PMRRC<msg_id><msg_data><chksum><cr>

The checksum is computed by an 8 bit addition of the msg_id and msg_data characters,

ignoring carry if any. The resulting 8 bit checksum is converted to two ascii characters by

taking the upper and lower nibbles, adding 30h to each, and placing the most significant

character first in the data message.

Airport Ident Output

This message is used to output the selected airport ident.

Message Format

$PMRRC04tiiii<chksum><cr>

04 .......message id

t ..........list type, outputs a 1

iiii.......ident, four character ascii

Example Message

$PMRRC041SLE<space>99<cr>

Output ident of “SLE” for the following frequency information.

Example Moving Map Data Output

AN 34 1570 34°15.70’ latitude

BW 118 4390 118°43.90’ longitude

C306 306° track angle

D210 210 knots

E02682 268.2nm to waypoint

GR0006 0.6nm right of course

I3059 305.9° desired track

KSFO SFO waypoint ident

L3058 305.8° bearing to waypoint

QE140 14.0° east magnetic variation

T--------- No alarms, data not flagged

<binary data> From Table 7

Figure 13 Moving Map Data Output

1 2 ... 53 54 55 56 57 58 59 60 61 62

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Apollo SL Instalační manuál Strana 58