Saab R5 SUPREME AIS, Руководство по эксплуатации и установке

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R5
SUPREME - Navigation System
ELECTRICAL INTERFACES
7000 118-301, A Page 143
13.1.4 Electrical Characteristics of CDU Serial ports
The serial ports in the R5 SUPREME CDU are the Sensor Port, User Port 3 and user Port
4.
13.1.4.1 Output Drive Capacity
Each serial port transmitter in the R5 SUPREME CDU can have a maximum of 25
listeners drawing 2.0 mA each.
13.1.4.2 Input Load
Input impedance for each listener
input is 6.4 kΩ.
13.1.4.3 Termination
The R5 NAV Junction Box has built in termination resistors. If needed, the termination
resistors can be connected by flipping the respective termination switch in the junction
box. If the junction box is not used, a 1kΩ termination resistor can be used close to the
receiver end.
13.1.4.4 Schematics
Each of the RS422 serial interfaces on the R5 SUPREME CDU fulfils the requirements
of IEC 61162-2. All serial ports on the R5 SUPREME CDU support communication
rates up to 115200 bps.
A detailed schematic of the serial ports in the R5 SUPREME CDU is shown in Figure
110.
Figure 110
– R5 SUPREME CDU Serial Port Schematics
Internal signals
to/from R5
SUPREME CDU
To/from external
equipment