Operation Manual

Table Of Contents
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RMM software. Measure the RF frequency at the CSB outlet at the front of the ILS cabinet
CHECK:
Power down the system and place the card inside cabinet.
Maintenance Check the maintenance parameters for the OS1221 unit.
7.3.5 MO1212 replacement
PREPARATIONS:
Power down system. Remove old unit.
Compare the version numbers of the removable EPROM on the card. Make sure the new
unit contains the same or newer EPROM software version.
Place the new card in the vacant slot.
ADJUSTMENT:
1. Use RMM software to upload configuration to the replaced monitor board.
2. Check that the CL, DS, NF and CLR measurements in the RMM software are the same as
before the replacement. Adjust the channel gains on the corresponding monitor frontend
board if any discrepancies are seen.
CHECK:
Verify monitor limits with an external ILS generator, as described in chapter 6.
Monitor Make sure the ILS is operating in normal state (transmitters on) and check that
all parameters are normal.
Maintenance Check the maintenance parameters for the MO1212 unit.
Final Make a printout of the monitor values (Print Report) and settings. Compare with
previous report taken before the board was replaced. Check that the alarm lim-
its and delays are the same as before.
7.3.6 TCA1218 replacement
PREPARATIONS:
Power down system. Remove old unit.
ADJUSTMENT:
Make sure that all configuration straps (U1) are set as on the previous module. The best way
to do this is to exchange the U1 component platform.
Compare the version numbers of the EPROM- and FPGA units on the board. Make sure the
new unit contains the same EPROM and FPGA versions.
CHECK:
Start up: Check that the ILS front panel display shows the correct equipment setting
(e.g. NM7013 Two-frequency Localizer).
Maintenance: Check the maintenance parameters for the TCA1218 unit.
Front Panel: Set the local/remote switch in local position and the auto/manual switch in man-
ual position. Check that it is possible to turn transmitters on/off and perform a
changeover.
Integrity test: Turn main transmitter(s) on. Set the auto/manual switch in auto position. Use
RMM software to switch off the 90 Hz tones of both main transmitters. Observe
that a changeover, and after a while a shutdown takes place.