Section-2 Installation
October 28, 2013
2
‐
8
Copyright
©2013,
Harris
Broadcast
WARNING:
Disconnect
primary
power
prior
to
servicing.
888
‐
2720
‐
001
nal
APC
input
this
connection
is
not
required
and
the
Exciter
Type
must
be
set
to
CUST
IPA(APC
to
internal
IPA)
in
the
FAX
setup.
If
using
CUST
IPA
dipswitch
S1
‐
5
on
PA
Backplane
board
1(top
board)
where
the
IPA
plugs
in
must
be
set
to
ON.
This
passes
the
APC
voltage
to
the
IPA.
•
The
transmitter
will
display
forward
power
from
the
exciter
based
on
a
DC
voltage
from
the
exciter
that
is
proportional
to
it
RF
output.
If
the
exciter
does
not
have
this
analog
output
that
transmitter
will
still
operate
but
will
not
display
exciter
forward
power.
For
dual
exciters
automatic
switchover
is
done
by
using
this
volt
‐
age,
if
not
available
the
exciter
will
be
forced
to
the
other
exciter
in
auto
mode.
See
Section
5
of
this
manual
for
exciter
power
calibration
procedure.
•
Ensure
the
exciter
RF
power
output
is
set
to
approximately
2
Watts
for
safe
initial
turn
on
of
the
transmitter.
Refer
to
Section
5
of
this
manual
and
the
exciter
manual
for
proper
dipswitch
settings
internal
to
the
FAX
transmitter.
Table 2-1 EXCITER INTERFACE (J2,J3 D-sub 15, amplifier rear)
Designation
Remarks
Pin
Type
GND
Signal
ground
1
EXCITER
FORWARD
POWER
SAMPLE
Exciter
forward
power
reading
0
‐
4
VDC
for
0
‐
100%
power
out
of
the
exciter
2
Input
RS
485
+
Used
for
FAX
exciter
only
3
Bi
‐
Directional
FM_ON_STATUS
Exciter
grounds
pin
to
tell
PA
that
mode
is
FM
ONLY
(continuous
closure)
4
Input
HD_ON_STATUS
Exciter
grounds
pin
to
tell
PA
that
Exciter
Mode
is
HD
(continuous
closure).
5
Input
EXCITER
FAULT
Exciter
grounds
pin
to
signal
it
has
internal
alarm
6
Input
N/C
No
connection
7
Spare
APC
OUTPUT
Analog
voltage
from
transmitter
to
control
exciter
output
power.
0
‐
3.3
(or
0
‐
4.75
VDC
Sys
Inf
Bd
Dipswitch
S2
‐
1
sets
range)
VDC
linear
0
VDC
=
Min
power
8
Output
MUTE
Mute
Output
logic
can
be
Hi
or
Lo
to
mute
exciter.
See
switch
settings
in
Section
5
of
this
manual
to
configure.
9
Output
N/C
No
Connection
10
Spare
Summary of Contents for Flexiva FAX 5KW
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