Installation manual

Environmental Qualifications

Apollo MX20 Installation Manual

Figure 23 - Altitude Data Input

6.5 STORMSCOPE INPUTS

The WX-500 is the only stormscope that the MX20 MFD interfaces with. It can be connected to RS-

422 or RS-232.

RS-232

Connection TX J3-20

RX J3-8

RS-232_GND J2-5

Cable Twisted shielded triad 24 AWG wire

Voltage Logic 0 (space) Min: +5V, Max: +15V

Logic 1 (mark) Min: -15V, Max: -5V

Baud Rate 9600

Load Impedance 3KΩ Min.

RS-422

Connection TX+ J3-25, TX- J3-13

RX+ J3-24, RX- J3-12

GND CASE_GND

Cable Twisted shielded pair 22 AWG

Voltage Logic 0 (space) Min (A-B): +2V, Max (A-B): +6V

Logic 1 (mark) Min (A-B): -6V, Max (A-B): -2V

Baud Rate 9600

Load Impedance 3KΩ Min.