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Chapter
1
Description
MSF
5000
Instruction Manual
TTRC
Audio Board
Trunking Modulation and Receive Audio
Trunking modulation audio (TKG MOD AUDIO)
sent to the
SSCB
for transmission
is sourced from two separate paths. Path
1
is from the
trunking
central controller
via TX DATA (+)
and
TX DATA
(-). Figure
1-15
shows
a
block diagram of
the
trunking modulation and
receive audio circuitry.
™
DATA
TKG
AUDIO
MUTE
VB
DATA/FAILSOFT
DEVIATION
AUDIO
SPLATTER
LEVEL ADJUST
GATE
FILTER
AuDIO
GATE
EEPOT
B
TKG
MOD
AUDIO
CONNECT TONE
RECOVERY
QUAD
»
BOARD
CIRCUIT
TKG
GATE
>
GATE
rx
AUDIO
RECOVERY
AUDIO
RECEIVER
eo
FILTER
CCI ENABLE
CT
ENABLE
MSFi063
022294JNM
Figure 1-15
Trunking
Modulation and
Receive Audio Circultry
Path
2
is trunking receive audio
(TKG RX AUDIO)
that is sourced from two
separate paths, both
of which originate on
the
SSCB. Path
1
is receive audio
(QUAD AUDIO)
and path
2
is connect tone
(CONNECT TONE)
audio. Connect
tone
audio is used only
in
coded trunked systems
during
a
receive code detect.
Simulcast
Modulation
Audio
Simulcast transfers audio or data originating at
a
Remote
Delay Module (RDM)
or
Wide Band Modem (WBM)
to the
SSCB
for transmission. Figure
1-16
shows
a
block diagram of
the
simulcast modulation audio circuitry.
1-34
68P81092E02
3/10/94
Chapter
1
Description
MSF
5000
Instruction Manual
TTRC
Audio Board
Trunking Modulation and Receive Audio
Trunking modulation audio (TKG MOD AUDIO)
sent to the
SSCB
for transmission
is sourced from two separate paths. Path
1
is from the
trunking
central controller
via TX DATA (+)
and
TX DATA
(-). Figure
1-15
shows
a
block diagram of
the
trunking modulation and
receive audio circuitry.
™
DATA
TKG
AUDIO
MUTE
VB
DATA/FAILSOFT
DEVIATION
AUDIO
SPLATTER
LEVEL ADJUST
GATE
FILTER
AuDIO
GATE
EEPOT
B
TKG
MOD
AUDIO
CONNECT TONE
RECOVERY
QUAD
»
BOARD
CIRCUIT
TKG
GATE
>
GATE
rx
AUDIO
RECOVERY
AUDIO
RECEIVER
eo
FILTER
CCI ENABLE
CT
ENABLE
MSFi063
022294JNM
Figure 1-15
Trunking
Modulation and
Receive Audio Circultry
Path
2
is trunking receive audio
(TKG RX AUDIO)
that is sourced from two
separate paths, both
of which originate on
the
SSCB. Path
1
is receive audio
(QUAD AUDIO)
and path
2
is connect tone
(CONNECT TONE)
audio. Connect
tone
audio is used only
in
coded trunked systems
during
a
receive code detect.
Simulcast
Modulation
Audio
Simulcast transfers audio or data originating at
a
Remote
Delay Module (RDM)
or
Wide Band Modem (WBM)
to the
SSCB
for transmission. Figure
1-16
shows
a
block diagram of
the
simulcast modulation audio circuitry.
1-34
68P81092E02
3/10/94
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