OPERATING MANUAL
A-2
21833-3.4
NORMARC 7013
INSTRUMENT LANDING SYSTEM
Monitor and Maintenance Parameters ©1999 Navia Aviation AS
A.2 Maintenance Parameters
These parameters may cause maintenance warning and can be used for fault isolation pur-
poses.
Originates
from module
Parameter Gives WARNING when
(with default warning limits setting):
MO1212 +5V OK +5V Supply Voltage below predefined limit.
STS ACT ADC conversion error
DSP PFO DSP power failure
DSP ERROR DSP watchdog warning.
DIAG RST Not used
SYNC ERROR COMPARATOR out of sync
+15V OK +15V Supply Voltage below predefined limit.
-15V OK -15V Supply Voltage below predefined limit.
MF1211/
MF1219
CL RF LEVEL RF level from CL monitor channel below predifined limit.
CL BASEBAND Baseband level from CL monitor channel below predi-
fined limit.
DS RF LEVEL RF level from DS monitor channel below predifined limit.
DS BASEBAND Baseband level from DS monitor channel below predi-
fined limit.
NF RF LEVEL RF level from NF monitor channel below predifined limit.
NF BASEBAND Baseband level from NF monitor channel below predi-
fined limit.
CLR RF LEVEL RF level from CLR monitor channel below predifined
limit.
CLR BASEBAND Baseband level from CLR monitor channel below predi-
fined limit.
LF1223 COURSE LEVEL 90 Output level of 90Hz tone to COURSE transmitter below
predefined limit.
COURSE LEVEL
150
Output level of 150Hz tone to COURSE transmitter
below predefined limit.
COURSE LEVEL
DC
Output level of DC signal to COURSE transmitter below
predefined limit.
CLR LEVEL 90 Output level of 90Hz tone to CLR transmitter below pre-
defined limit.
CLR LEVEL 150 Output level of 150Hz tone to CLR transmitter below pre-
defined limit.
CLR LEVEL DC Output level of DC signal to CLR transmitter below pre-
defined limit.
+15V OK +15V Supply Voltage below predefined limit.
-15V OK -15V Supply Voltage below predefined limit.
OS1221 COURSE OUTPUT
LEVEL
RF level output to COURSE transmitter is below a prede-
fined level
COU TUNEVOLT COURSE tunevoltage outside predifined limits.
COURSE SYNTH
LOCK WARN
Synthesiser has been out of lock since COURSE trasmit-
ter was turned on.
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