Motorola R-2400 Operator's Manual page 31

4.3.2 MODE SELECT
The modulation mode is
selected using the "MODE"
switch. AM, FM,
and
Cw
(no
modulation)
are
available.
4.3.3 SIMULTANEOUS GENERATE AND MEASURE.
MENT OPERATION
The
following
test
setups and
LCD
displays
are
examples
of
simultaneous generate and measurement operation.
1.
Connect the RF
In/Out to
the
mobile radio
antenna
connector
and
the multipurpose measurement input
to the
receiver audio output.
2.
Set
the function switch to GEN
and tr
to
Dev.
Adjust the
1
KHz level for 3.0 KHz
deviation and
then move the cursor
tr
to SINAD.
Adjust the
RF
venier for
12
dB SINAD indication.
Read the receiver sensitivity in microvolts or dBm.
Increase the RF generator level to
100 uV.
8.
Move the cursor
tr
to Dist.
Read the receiver
distortion
in
Vo.
g.
Move the cursor
tr
to DVM.
L0.
Select
AC or DC
volts using
m
switch.
If
oscillo-
scope
display is desired select the proper external
vertical trigger
for
oscilloscope
display.
1,1..
Apply
test
signals
from the receiver audio
stages
to
the unit's VERT/SINAD/DIST/DVM input.
The
same
x1 test probe
used
for SINAD
and
Distortion
may be used.
12. The voltage
can
be read on the left LCD display or
viewed on the
oscilloscope.
FIGURE
4.I-TEST
SET.UP
FOR FM RECEIVER
SENSITIVITY
3.
Enter
the
frequency
by pressing
trtrtrtrtrtr88tr
trtrtrtrtrtrtrtrtr
4.3,4 TEST PAGER DECODE AND ALERT FUNCTION
The internal programmable code synthesizer
generates
PRIVATE
LINE (PL) AND DIGITAL
PRIVATE
LINE (DPL)
squelch codes, two-tone sequential
paging
and
base
station tone remote control
signal continuously
or in burst
cycles
as
an internal modulation source. In
addition
to
the code
synthesizer, modulation is simul-
taneously available
from an
independently adjustable
internal
1
KHz tone
generator
as
well
as
from
external
input
sources.
1.
Connect the pager test fixture to the RF In/Out Con-
nector.
2.
Set
the FUNCTION switch
to GEN
and enter
the
frequency from key board.
Select
the paging format. Enter the pager tone
code
frequencies.
Start by pressing
@
Activate
by
placing
the Code Synthesizer switch in the
burst
(momentary) or continuous position
and adjust
Code Synth Lvl for
3.3
KHz deviation. A functional
pager
will
respond.
FIGURE 4-2-TEST
SET.UP FOR
PAGER
AND ALERT FUNCTIONS
NOTE:
A/B T&V
has
preprogrammed timing
sequences
for two-tone sequential tone and voice paging.
A/B VAR
is user programmable. Variable timing
sequences are
used
for
other signalling
systems.
\r/
\-/
4.
3.
4.
5.
6.
7.
TME
@ffi8
RF
IN/OUT
VETVSINAD
DiSVDVM
4-2
\../