Installation Manual

Lynx NGT-9000
Installation Manual
0040-17001-01 (Revision W) Maintenance Page 4-29
4.4.5.4 Test Strikes
The Test Strikes (see Figure 4-6) test is used by installers to visually verify the operation of the internal
strike test signal. No range indication is displayed. The rectangular shaped box is displayed on the screen
to enclose the area in which the test strikes should appear.
Test strikes are generated and sent to the antenna at a rate of one pulse per every 2 seconds. The resulting
test strike received by the system is displayed on the screen, and is indicated by a single strike symbol (+).
The last strike is erased before the next strike is generated.
Figure 4-6: Test Strikes
1. Press the “Strike Test” button to start test (see Figure 4-4).
2. Verify the test strike is inside the box. The test strike screen verifies the processing and plotting of
electrical discharge data. A strike indication ("+") should appear inside the displayed box every 2
seconds.
PASS A strike indication is typically displayed and cleared every 2 seconds (timing may be
affected by the MFD refresh rate), so that it appears to flash. The strike symbol should
appear inside the box.
FAIL If the generated strike indications appear outside of the box, or do not appear at all.
NOTE
Occasional strikes appearing outside the box or, that do not appear at all,
should not be interpreted as failing the test.
3. Switch back and forth between the Test Strikes and Noise Monitor to check for accurate plotting of
the internally generated test strikes and for electrical noise that could interfere with weather mapping.
(Troubleshooting electrical noise is discussed in in the WX-500 Installation Manual.)
NOTE
The system must pass both the Noise Monitor and Test Strikes criteria to
ensure proper operation.
4. Press the “Exit” button to return to the Tests Screen.