Section-5 Maintenance
October 28, 2013
5
‐
16
Copyright
©2013,
Harris
Broadcast
WARNING:
Disconnect
primary
power
prior
to
servicing.
888
‐
2720
‐
001
Figure 5-8 FAX Fault Log
STEP 5
Click
on
File,
Save
As
and
save
as
a
text
or
htm
file.
STEP 6
To
save
into
excel,
highlight
the
all
boxes,
and
copy
on
to
clipboard.
STEP 7
Open
excel
and
right
click,
select
"Paste
Special.
When
the
box
appears
click
on
"Text",
fault
log
should
appear
in
the
boxes.
STEP 8
To
the
file
click
on
the
Printer
icon
and
send
to
a
printer
connected
to
the
PC.
5.7
System Calibration Procedures
5.7.1
System Forward/Reflected Power Calibration
The
output
power
of
the
transmitter
system
is
accurately
calibrated
at
the
factory
using
a
precision
Calorimeter
and
load.
There
is
no
separate
calibration
for
reflected
power,
once
the
forward
is
calibrated
the
computer
auto
‐
matically
calibrates
the
reflected
power
in
the
same
calibration
routine.
There
are
separate
calibrations
for
each
type
of
modulation,
FM,
FM+HD
and
HD.
If
the
transmitter
is
used
for
more
than
one
mode,
each
modulation
type
used
must
be
calibrated.
The
calibration
is
stored
in
the
transmitter
memory
and
can
also
be
downloaded
to
a
con
‐
fig
file
and
stored
for
use
in
the
case
of
a
failed
Control
and
Display
Board.
If
the
transmitter
system
needs
calibra
‐
tion,
a
calibrated
power
meter
is
required,
either
in
‐
line
or
a
stand
‐
alone
meter
such
as
an
Agilent
4418
or
equivalent.
If
the
transmitter
is
running
one
of
the
iboc
modes,
ensure
that
the
power
meter
is
capable
of
measur
‐
ing
digital
modulation.
Note
If calibrating in the power in HD Only mode of operation, the power calibrated to should be 5 % higher
than the TPO the transmitter will run at. ie a TPO of 10 kW should be calibrated at 10.5 kW. Once cali-
bration is complete use the lower button to set the transmitter at TPO.
Power
Calibration
Check
(Start
at
Step
2
for
External
Meter):
STEP 1
If
using
an
in
‐
line
meter
it
should
read
the
same
as
the
transmitter
front
panel
meter.
If
readings
do
not
match
(Typically
within
5%)
system
power
calibration
may
be
required.
To
calibrate
skip
to
the
perform
calibration
routine
below.
STEP 2
If
using
an
external
meter
please
refer
to
the
factory
test
data
that
was
shipped
with
the
transmitter,
it
has
the
calibration
factors
that
can
be
entered
into
the
wattmeter.
These
readings
take
the
loss
of
the
cables
and
splitter
into
account.
On
the
page
that
has
the
"Transmitter
Power
Readings",
there
are
the
Front
and
Rear
Sample
Port
Coupling
Factors.
STEP 3
On
a
FAX5/10
the
Front
reading
is
the
SMA
connector
on
the
front
door
of
the
transmitter.
On
FAX20/30/40
the
Front
is
the
SMA
connector
inside
the
front
door
on
power
block
one
that
is
next
to
the
Multi
‐
Unit
Control
Board.
STEP 4
On
a
FAX5/10
the
rear
is
the
Mod
Monitor
BNC
on
the
back
panel.
On
a
FAX20/30/40
the
Rear
is
the
J5
that
is
located
directly
on
the
output
directional
coupler.
Summary of Contents for Flexiva FAX 10KW
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