Harris Maxiva ULX, Technical Manual

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10/6/10 888-2629-200 6-5
WARNING: Disconnect primary power prior to servicing.
Section 6 Diagnostics
Maxiva ULX COFDM Series
6.4 Fault Tables
The following tables provide a listing of Maxiva Transmitter faults along with a brief
description, the fault level or threshold and the action taken by the transmitter.
Table 6-1 Maxiva Drive Chain Fault List
TYPE Description Fault Level or
Threshold Transmitter
Action Three
Strike Available
in Life
Support
IPA A Fault: Power
Supply, LDMOS,
VSWR, Power
Overload, Tempera-
ture, Input Power The IPA can report
up to 6 faults via
their parallel con-
trol pins Any one fault active IPA Switch to
alternate IPA if
in Auto Mode YES YES
IPA B Fault: Power
Supply, LDMOS,
VSWR, Power
Overload, Tempera-
ture, Input Power The IPA can report
upto 6 faults via
their parallel con-
trol pins Any one fault active IPA Switch to
alternate IPA if
in Auto Mode YES YES
PDU (Predriver) A
Fault The Predriver cur-
rent is monitored
inside the PDU. A
fault is sent if it is
below the normal
minimum current. Predriver current is
below TBD mA IPA Switch to
alternate IPA if
in Auto Mode NO YES
PDU Predriver B
Fault The Predriver cur-
rent is monitored
inside the PDU. A
fault is sent if it is
below the normal
minimum current. Predriver current is
below TBD mA IPA Switch to
alternate IPA if
in Auto Mode NO YES
Exciter A Power
Output Exciter A power
level low Trip point is 50% of
nominal. Trip point
adjustable by epot Exciter Switch
to alternate
Exciter if in
Auto Mode NO YES