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APPENDIX
AP-2
2. Digital Interface
Output sentences of channel 1
DATA OUT1-5: HDT, HDM, THS, ROT, Patt, Phve, VTG, GGA, GLL, GNS, ZDA, VHW, VBW,
VDR DATA OUT 6: AD-10
Transmission interval
HDT, HDM, THS, ROT, Patt, Phve: 100 ms
VTG, GGA, GLL, GNS, ZDA, VHW, VBW, VDR: 1 s
For details see page 2-12.
Load requirement as listener
Isolation: Optocoupler
Input Impedance: 220 ohms
Max. Voltage: ±15V
Threshold: 4 mA
Data transmission
Data is transmitted in serial asynchronous form in accordance with the standard referenced
in 2.1 of IEC 61162-1. The first bit is a start bit and is followed by data bits,
least-significant-bit as illustrated below.
The following parameters are used:
Baud rate: 4800
Data bits: 8 (D7 = 0), parity none
Stop bits: 1
D0 D1 D2 D3 D4 D5 D6 D7
Start
bit
Stop
bit
Data bits