Motorola SYSTEMS SABER SECURENET Handie-Talkie Manual de serviço - Página 17

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PERFORMANCE
TESTS
1.
TEST
MODE
When the
SYSTEMS SABER
radio is operating
in
a trunking environment,
it
operates
with
a specific
identity within an
assigned system. Given commands
from
that system, the radio's internal microcomputer
controls such functions
as
rf
channel selection, trans-
mitter
key-up, and receiver
muting.
However, when the
unit is on
the bench
for
test-
ing,
it
is removed from this trunking environment.
It
cannot receive commands
from its
system
and, there-
fore, the internal microcomputer will
not
key
the
transmitter or unmute the receiver.
This
prevents test-
ing the radio
in
the normal manner
unless
it
has been
programmed
on
one
or more
conventional (non-trunk-
ed) channels. On one
of
these channels
the unit
may
be tested
in
the normal mode allowed by the
channel's
programmed modes; for example, tone Private-Line®
(TPL),
Digital Private-Line™
(DPL),
etc.
To allow for testing the radio
in
a
more
generic
fashion, special test routines that allow manual control
of
the various modes
of
the
unit
have been provided
for
in
the test mode
called Air Test, which allows one
to
test various parameters
without having
to
disas-
semble the
radio.
If
adjustments are needed, the use
of
the field programmer,
described
in
the
SYSTEMS
SABER
Radio Service Software User's Guide,
will be
required.
To enter the
Air Test mode, connect
the equip-
ment
as
shown
in
Figure
1, then
do the following:
a.
Turn the radio
off.
b.
Apply 7.5 volts
to the radio battery
contacts.
c.
Connect
the radio to the
RTX4005B
portable test
set via
the test
cable.
d..
Place
the transmit mode switch on the test
set
in
the
CONT
(transmit) position.
e.
Press
and hold down the monitor button on the
side
of the radio.
f.
Turn the radio
on
and continue to
hold
down the
monitor button for two
seconds.
g.
Turn the transmit mode switch on the test
set
to
the
OFF
position.
NOTE
¢
The
unit will not
transmit
until the
transmit
mode switch
has been
turned off and then
back
to
one
of
the transit positions.
«
Do
not
change modes
or
channels
during Air
Test while
in
the transmit mode.
¢
To exit Air
Test
turn
the radio
off.
$-1347-D
Samp
DC
POWER
SUPPLY
<
0000
iwout
0000
COMMUNICATIONS
RADIO
MONITOR
ze
UNDER
TEST
wz
AC/DC
AC/DC
TESTBOX
MON
METER
INPUT
=
RTX-4005B
AUDIO
npur
MOD
OUTPUT
Sek
ors
ope
AUX
MOD
IN
RIB BOX
POWER SUPPLY
RADIO
ee
BOX
01-80353A74
o000
RF
qa
01-80357A57
MAEPF-20711-O
Figure
1.
Air
Test Setup
9