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3
.
ALIGNMENT
SETUP
AND SPECIFICATIONS
Table 5. Alignment Setup and Specifications
b
.
Connect the
radio to be aligned to the
test equipment
as
shown
in
Figure
2.
d.
Connect the 0180357A57 RIB
box power supply to the
RIB
box, and plug the
RIB
box power supply
into
an
.
Set
the radio power supply to
7.5 volts dc.
.
Turn on the radio
to
be aligned.
To align the radio using the Radio
Service
Software, do the following:
Refer
to
the Radio
Service
Software manual, 68P81060C25,
for
detailed alignment procedure.
a
.
Turn the radio
off.
Note: During alignment, the radio
is controlled by the
Radio Service Software. Do not operate
the radio's
controls during alignment,
since
this may result
in
improper tuning.
c.
Connect the
output of
he
RB
box
(0180353474)
to
the serial
porto
an IBM
PC
computer or 100% IBM
PC
Test
Name
Test Setup
Tune Target
Test Limits
compatible computer.
ac
outlet.
f.
Connect the
radio remote antenna
cable
(part of the
RTK-4203
programming/test
cable)
to the
rf
power
input
of the communications
monitor.
h
Refer
to the
Radio Service Software
(RSS)
manual,
68P81060C25,
for the
alignment procedure.
Refer
to
Table 5, Alignment Setup and Specifications, while performing the
RSS
alignment procedure.
$-1347-D
Samp
OC
POWER
SUPPLY
$
e000
COMMU
car
c
£
S
h
RADIO
ze
UNDER
TEST
MONITOR
Eid
RTX
AUDIO
INPUT
MOD
OUTPUT
4
34
MoD
IN
POWER SUePLY
RADIO
INTERFACE BOX
01-80357A57
01-80353A74
89
MAEPF-20712-0
Tx
RF
Power
Set
communications
monitor to
measure
rf
power
2.2 Watts
2.0
-
2.4 Watts
Low
output
level:
High output level:
§.2
Watts
5.0
-
5.5 Watts
Special
output
level:
Special
5.5 Watts
Maximum
lator Adjust
Set
communications
monitor to
Error
<120Hz
Error
<500 Hz
measure
rf
frequency
Dev
iation Limit
Connect
audio generator
to
AUDIO
4.4 kHz
Nominal
3.9
-
4.8
kHz
INPUT
on
test set.
Set
frequency
to
1000Hz.
Set
input
level
to
2 Volts
rms.
Deviation
Within
0.35 dB
Within 1.0
dB
Connect
audio generator to
AUX
Balance
MODULATION
connector
on
(4.1%)
(12.2%)
RTK-42034
test cable.
Set
audio
output level for
350
mV.
Set
audio
generator frequency to 1000 Hz
or
20
Hz as
specified
in
the alignment
procedure.
Signalling Deviations
Deviation
limits
and deviation balance
must be aligned before tuning
signalling deviations. External
modilation
inputs are
'not
Used during
these alignments. Disconnect any
external modulation inputs.
Set
communications
monitor to
measure
deviation.
DTMF
with
Connect Tone
4.0 kHz
Nominal
3.3
-4.7
kHz
3.0 kHz Nominal
2.5
-
3.5 kHz
DTMF
Only:
DTMF
with
PL:
3.75 kHz
Nominal
3.0
-
4.5 kHz
ISW
Only:
3.0 kHz
Nominal
2.4
-
3.6 kHz
DVP
Only:
4.0 kHz
Nominal
3.5
-
4.5 kHz
Threshold Squelch
Set
communications
monitor
rf
output
Per
RSS
Manual
0.5
pV
Maximum
(Air Test Mode or
frequency to the receive
Conventional Channels)
frequency.
Set
rf
output level to
<-140
dBm or
no output
while
adjusting squelch setting
per
RSS
manual alignment procedure.
Once
squelch value has been set, increase
communications
monitor
rf
output
level
until
squelch opens.
This
level is
called "threshold squelch."
RF
0000
IN/OUT
0000
ES
85
IBMPC
En
AUX
COMPUTER INTERFACE
CABLE
(BM
RIB
BOX
3-80369B71
Figure 2. Alignment Setup
13
3
.
ALIGNMENT
SETUP
AND SPECIFICATIONS
Table 5. Alignment Setup and Specifications
b
.
Connect the
radio to be aligned to the
test equipment
as
shown
in
Figure
2.
d.
Connect the 0180357A57 RIB
box power supply to the
RIB
box, and plug the
RIB
box power supply
into
an
.
Set
the radio power supply to
7.5 volts dc.
.
Turn on the radio
to
be aligned.
To align the radio using the Radio
Service
Software, do the following:
Refer
to
the Radio
Service
Software manual, 68P81060C25,
for
detailed alignment procedure.
a
.
Turn the radio
off.
Note: During alignment, the radio
is controlled by the
Radio Service Software. Do not operate
the radio's
controls during alignment,
since
this may result
in
improper tuning.
c.
Connect the
output of
he
RB
box
(0180353474)
to
the serial
porto
an IBM
PC
computer or 100% IBM
PC
Test
Name
Test Setup
Tune Target
Test Limits
compatible computer.
ac
outlet.
f.
Connect the
radio remote antenna
cable
(part of the
RTK-4203
programming/test
cable)
to the
rf
power
input
of the communications
monitor.
h
Refer
to the
Radio Service Software
(RSS)
manual,
68P81060C25,
for the
alignment procedure.
Refer
to
Table 5, Alignment Setup and Specifications, while performing the
RSS
alignment procedure.
$-1347-D
Samp
OC
POWER
SUPPLY
$
e000
COMMU
car
c
£
S
h
RADIO
ze
UNDER
TEST
MONITOR
Eid
RTX
AUDIO
INPUT
MOD
OUTPUT
4
34
MoD
IN
POWER SUePLY
RADIO
INTERFACE BOX
01-80357A57
01-80353A74
89
MAEPF-20712-0
Tx
RF
Power
Set
communications
monitor to
measure
rf
power
2.2 Watts
2.0
-
2.4 Watts
Low
output
level:
High output level:
§.2
Watts
5.0
-
5.5 Watts
Special
output
level:
Special
5.5 Watts
Maximum
lator Adjust
Set
communications
monitor to
Error
<120Hz
Error
<500 Hz
measure
rf
frequency
Dev
iation Limit
Connect
audio generator
to
AUDIO
4.4 kHz
Nominal
3.9
-
4.8
kHz
INPUT
on
test set.
Set
frequency
to
1000Hz.
Set
input
level
to
2 Volts
rms.
Deviation
Within
0.35 dB
Within 1.0
dB
Connect
audio generator to
AUX
Balance
MODULATION
connector
on
(4.1%)
(12.2%)
RTK-42034
test cable.
Set
audio
output level for
350
mV.
Set
audio
generator frequency to 1000 Hz
or
20
Hz as
specified
in
the alignment
procedure.
Signalling Deviations
Deviation
limits
and deviation balance
must be aligned before tuning
signalling deviations. External
modilation
inputs are
'not
Used during
these alignments. Disconnect any
external modulation inputs.
Set
communications
monitor to
measure
deviation.
DTMF
with
Connect Tone
4.0 kHz
Nominal
3.3
-4.7
kHz
3.0 kHz Nominal
2.5
-
3.5 kHz
DTMF
Only:
DTMF
with
PL:
3.75 kHz
Nominal
3.0
-
4.5 kHz
ISW
Only:
3.0 kHz
Nominal
2.4
-
3.6 kHz
DVP
Only:
4.0 kHz
Nominal
3.5
-
4.5 kHz
Threshold Squelch
Set
communications
monitor
rf
output
Per
RSS
Manual
0.5
pV
Maximum
(Air Test Mode or
frequency to the receive
Conventional Channels)
frequency.
Set
rf
output level to
<-140
dBm or
no output
while
adjusting squelch setting
per
RSS
manual alignment procedure.
Once
squelch value has been set, increase
communications
monitor
rf
output
level
until
squelch opens.
This
level is
called "threshold squelch."
RF
0000
IN/OUT
0000
ES
85
IBMPC
En
AUX
COMPUTER INTERFACE
CABLE
(BM
RIB
BOX
3-80369B71
Figure 2. Alignment Setup
13
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