NORMARC 7013 - Quarterly Inspections; Tx Parameters and DC Power Supply Recordings; Monitor Integrity Check (Alternative 1); Monitor Integrity Check (Alternative 2)

OPERATING MANUAL
6-2
21833-3.4
NORMARC 7013
INSTRUMENT LANDING SYSTEM
Periodic maintenance CAT I and II ©1999 Navia Aviation AS
Record in Table 6-7. Also record Tx1 or Tx2 used.
6.3 Quarterly inspections
(Can be changed to 6 Months intervals for Cat I installations and 4 Months for Cat II.)
Test equipment
• Oscilloscope
•Stop watch
• PC with RMM and printer
6.3.1 Tx Parameters and DC Power supply recordings.
Tx1 to antenna. Tx2 active to dummy load.
Open Maintenance parameters. Double click COURSE TX1 LPA/GPA, COURSE TX2 LPA/
GPA, CLR TX1 LPA/GPA, CLR TX2 LPA/GPA, DC SUPPLIES. Fill in Table 6-8 manually or
make a paper copy by “Print Screen” function.
Compare values with previous recordings.
6.3.2 Monitor Integrity Check (Alternative 1)
6.3.2.1 False radiation time Tx1 Main
Equipment in mode AUTO. Main Select Tx1. Tx 1 on.
• Remove the CL monitor cable from the monitor input.
• Note the time elapsed*) from the signal was removed until Tx2 was shut off.
• Record in Table 6-10 line a) the measured delay time from cable removal until the standby
transmitter has switched off. Check that the equipment carries out a changeover to Tx 2
before shutoff. Record in Table 6-10 line b)
• Open PA maintenance parameters window. (Ref para 5.7.5 Operating Manual). Check that
PA 27V LEVEL Course Tx1 is 0 V. Record in Table 6-10 line c).
Reconnect the monitor cable.
6.3.2.2 False radiation time Tx2 Main
Equipment in mode AUTO. Main Select Tx2. Tx 2 on.
• Remove the CL monitor cable from the monitor input.
• Note the time elapsed*) from the signal was removed until Tx1 was shut off. Check that the
equipment carries out a changeover to Tx 1 before shutoff.
• Record in Table 6-10 line d) the measured delay time from cable removal until the standby
transmitter has switched off. Check that the equipment carries out a changeover to Tx 2
before shutoff. Record in Table 6-10 line e)
• Open PA maintenance parameters window. (Ref para 5.7.5 Operating Manual). Check that
PA 27V LEVEL Course Tx1 and Clearance Tx 1 is 0 V. Record in Table 6-10 line f).
Reconnect the monitor cable.
Note:*) Near immediate change if short delays are used.
6.3.3 Monitor Integrity Check (Alternative 2)
Can be performed from a remote location.