Installation Manual

Lynx NGT-9000
Installation Manual
0040-17001-01 (Revision W) Appendix A Page A-3
A.2.5.3 Altitude Data
The RS-232Altitude Data interface is optional. Only one altimeter input source (gray code, ARINC-429
or RS-232) should be connected. NGT-9000 connection is unidirectional RS-232 (Rx3, pin 60).
1. When the Trimble/Garmin/Icarus protocol option is used, the following characteristics are set:
Requires Altitude Encoder and Control Panel interface, Baud rate is set to 9600 bps, Data bits 8,
Parity none.
2. When the Northstar protocol option is used, the following characteristics are set: Requires Altitude
Encoder and Control Panel interface, Baud rate is set to 2400 bps, Data bits 8, Parity none.
3. When the UPS AT protocol option is used, the following characteristics are set: Requires Altitude
Encoder and Control Panel interface, Baud rate is set to 1200 bps, Data bits 8, Parity none.
4. When the UPS AT Loran 618 protocol option is used, the following characteristics are set: Requires
Altitude Encoder and Control Panel interface, Baud rate is set to 1200 bps, Data bits 7, Parity odd.
5. When the MAGELLAN protocol option is used, the following characteristics are set: Requires
Altitude Encoder and Control Panel interface, Baud rate is set to 1200 bps, Data bits 8, Parity even.
6. When the SHADIN protocol option is used, the following characteristics are set: Requires Altitude
Encoder and Control Panel interface, Baud rate is set to 9600 bps, Data bits 8, Parity odd.
7. When the ARNAV protocol option is used, the following characteristics are set: Requires Altitude
Encoder interface, Baud rate is set to 9600 bps, Data bits 8, Parity odd.
A.2.5.4 WX-500 Interface
The RS-232 interface to the WX-500 is optional. The WX-500 provides range and bearing of lightning
discharge points in relation to the aircraft. In addition, the NGT-9000 can also be configured to receive
AHRS information from the WX-500 (using synchro heading). NGT-9000 connections are Rx1 & Tx1
(pins 61 & 62).
When interfacing the NGT-9000 to the WX-500, the system must be wired so that the NGT-9000
is the master/sole controller for the WX-500.
A.2.5.5 GPS Position Source
The RS-232 interface can be used to output the GPS position information of the aircraft. NGT-9000
connections are Rx1 & Tx1 (pins 61 & 62).
WAAS/GPS Output: Certified 5 Hz, RS-422/RS-232 and WiFi Class Beta 1 GPS output. Qualified for
LNAV approaches only per TSO-C129d Table 1-1. (Configuration setting listed as L-3 Protocol 1).
A.2.6 RS-422 Interface
The RS-422 is a serial interface used to output weather and traffic data to a compatible display or
interface with the WX-500 for lightning detection.
The RS-422 standard used in this manual matches the ANSI Standard (i.e. the data lines on the RS-422
signals are labeled with an “A” for (-) negative (inverting), or “B” for (+) positive (non-inverting). RS-
422 can be configured with a Baud rate of 38400, or 57600, or 115200 using the MPC (MAT).
A.2.6.1 RS-422 Interface to Display
The RS-422 interface to a compatible display is optional. The NGT-9000 provides the following
information: GPS Positon, maintenance flag, IDENT, seconds since 0000 UTC, UTC validation, and
message counts. NGT-9000 connections are Tx2B & Tx2A (pins 52, & 53).