Lynx NGT-9000
Installation Manual
3.10.1.3.3 Set Display Brightness
1.
Press the BRT button located on the right side of the screen to open the brightness scale bar.
2.
Press and slide the scale button to adjust the Display Brightness Trim to the desired percentage.
3.
The brightness screen times out after a few moments returning to the settings screen.
3.10.1.4 Indicator Lamp Check
Verify the following indicator lamps functioning properly (if installed) during the checkout.
•
TAS Alert
•
ADS-B Out Fail
•
TIS-B Not In Coverage
1.
If an annunciator dimming switch was installed, verify all annunciators are illuminated full bright
when BRT is selected.
2.
Verify all annunciators are illuminated at the desired dimming level when DIM is selected.
3.
TAS Alert – This lamp is ON when a TA (Traffic Advisory) is detected by the TAS system. Verify
the operation of this lamp when performing tests for the TAS system.
4.
ADS-B Out Fail – This lamp does the following depending on the situation:
•
Flashes at a slow rate (1 sec On and 1 sec Off) while the GPS is initializing. Check by cycling
power to the unit. Flashing will last only 2 minutes before the lamp stays ON.
•
The lamp is ON when the ADS-B Out has failed.
5.
TIS-B Not In Coverage – This lamp is ON if no ground station signals (TIS-B/ADS-R) is detected.
The lamp is OFF when a signal is detected either by a ground station or when the IFR-6000 is used
for TIS-B checks.
Note: It is normal that this light will NOT extinguished when testing with an IFR-6000. It will only
extinguish when within coverage of a ground station.
3.10.1.5 Discrete Switch Checks
Verify the following external switches are functioning properly (if installed). Note: The MPC can be
used to validate the inputs for the external checks. See paragraph 3.9 for details.
1.
If installed verify that the Audio Mute switch inhibits audio messages sent by the unit.
2.
Verify that the IDENT Input switch causes the unit transponder to transmit the "ident" flag in
transponder interrogation replies. This check may be skipped if verified during the configuration
setup procedure.
3.
The On-Ground switch function is verified by the operation of the System Test button is available on
the Transponder Application screen and the ON-GND message located on the transponder screen.
3.10.1.6 Suppression Pulse Check
This check is optional. Use an oscilloscope to verify that the RF Suppression pulse (Discrete #2 out) is
100
µ
s
±
5
µ
s, +28 V dc when the unit is transmitting TAS data. There are 2 other lengths of suppression
pulses that will be seen when the transponder is operating (1 longer and 1 shorter than 100us).
3.10.1.7 Alternate Display Check
The NGT-900 may be interfaced to a compatible traffic display (ARINC 429 or RS-422) and weather
display (RS-422). The instructions provided in this manual are generic. Refer to the manufacturers display
manual for operation and checkout procedures.
•
A functional check with the NGT-9000 is accomplished during the check of the ADS-B In, TIS-B,
FIS-B and any other checks requiring the use of the alternate display.
0040-17001-01
Installation Checkout
Page 3-27
Revision A
January 15, 2015
