User's Manual Part 2

T ECHNICAL D OCUMENTATION P ROTECTING P EOPLE AND A SSETS
®
D ATE : 22 M ARCH 2017 | V ERSION : 1.4
81
R ANGER -X5 R ADAR S YSTEM
T
ROUBLESHOOTING
,
M
AINTENANCE
,
AND
C
ALIBRATION
EEC
®
|
C
OMPANY
P
ROPRIETARY
Summary and Setup:
The electrical limit switches are safety devices installed in the elevation “antenna drive circuit” to
prevent damage to the antenna.
The limit switches remove drive voltage from the elevation motor prior to reaching the lower or
upper mechanical limit stops.
Perform a limit switch alignment prior to this test.
1. Monitor the readout of the antenna elevation position.
2. Slowly drive the antenna up using the manual controls and observe that the drive
movement stops when the antenna reaches an elevation of 90 ° -0, +1°.
3. Drive the antenna down and observe that the drive stops at approximately -
2.0° + 1° degrees elevation.
4. Turn off the servo drive by activating the pedestal mounted System Safe switch. Manually
move the antenna to the lower hard stop. Record and verify the elevation readout
indicates between -3° to -5°.
5. Manually move the antenna to the upper hard stop. Record and verify the elevation
readout indicates 92° to 96°.
5.3.3. Antenna Speed and Pointing Accuracy Test
1. Set point of control to REMOTE.
2. Using the Edge host computer open a shell terminal and type ‘rex’. (NOTE: Some systems
require typing ‘rexd’ instead of ‘rex’. If atest fails to run, exit out of rex, return to step 2,
and type ‘rexd’ instead of ‘rex’.)
3. Then type ‘point 0 0’
4. Then type ‘atest’.
5. The system will now enter into an automated mode of testing where the antenna
positioning accuracy and speed will be measure and reported to the user. This test will
produce a “Pass” or “Fail” status as well as the error measured.
6. During the automated the test the antenna elevation will be positioned at a rate of > 5
degrees per /second.
7. Using the table below as reference visually monitor and verify the angle displays on the
EDGE Surveillance displays windows.
8. Allow time for the automatic antenna test utility to complete.
9. Note all test results indicated a PASS.
10. Complete the table below by entering a checkmark for each angle pointing accuracy
verification.
11. Save and Print out the ‘atest’ test results and include as an attachment to the SAT
document.
5.3.4. System Interlock and Safe Switch Test
5.3.4.1. Azimuth Safe Switch Verification Test
The Azimuth safe switch, located at the Pedestal Electrical Panel, is designed to prevent
movement in the Azimuth axis while permitting movement in the elevation axis and allowing
radiate. To verify operation of the Azimuth Safe Switch:
Test Procedure:
1. Perform Pedestal Safe Switch Verification Tests.
2. At the Pedestal Electrical Enclosure, place the Azimuth Safe switch in safe mode. Verify