Motorola MSF 5000 Instruction Manual page 252

Appendix C
MUxXbus
Descriptions
MSF
5000
Instruction Manual
MUXbus Overview
R2
PL
DT
Receiver
2
PL/DPL
Detect (A4/D2)
Active
when
PL, DPL, or
CT
coded squelch is being detected on Receiver
2.
The
second receiver option is not yet supported,
so
this bit has no effect when active.
R2 CD DT
Receiver
2
Code Detect (A4/D1)
Indicates
a
Receiver Code Detect due
to
receipt of Secure
(12
Kbit)
data on
Receiver
2.
The second receiver option is not yet supported,
so this bit has no
effect
when active.
R2
UN
SQ
Receiver
2 Unsquelch (A4/D0)
Active
when
the
Receiver
2
audio carrier squelch circuit
detects on-channel
RF
activity. R2
UN
SQ is used for audio gating (refer
to
RX2
ACT).
The second
receiver option is not yet supported, so
this bit has no effect when active.
GD TN DT
Guard Tone Detect (A5/D3)
Indicated that High Level Guard
Tone is being detected from the
Tx Audio
signal.
This bit
is also active
during
the
function
tone detect
window. The
TX
Audio
signal
is muted
while
GD TN DT
is active, in order
to
prevent remote control
tones from
being transmitted over
the air.
AUX DET
Auxiliary
Detect (A5/D2)
Indicates that an optional decoder is detecting on Receiver
1.
AUX
DET
can be
used
to
activate
RX1
ACT,
RX2
ACT, and
RPT PTT
in
a
manner similar to the R1
PL DT
and R1
UN
SQ qualifiers.
RPT
KD
Repeater Knock-down (A5/D1)
Disallows
a
repeater
PTT
when active. Inhibits in cabinet
repeat,
but allows
receive audio
to be
gated
to the
local speaker and wireline.
C-6
68P81092E11
3/19/94
Appendix C
MUxXbus
Descriptions
MSF
5000
Instruction Manual
MUXbus Overview
R2
PL
DT
Receiver
2
PL/DPL
Detect (A4/D2)
Active
when
PL, DPL, or
CT
coded squelch is being detected on Receiver
2.
The
second receiver option is not yet supported,
so
this bit has no effect when active.
R2 CD DT
Receiver
2
Code Detect (A4/D1)
Indicates
a
Receiver Code Detect due
to
receipt of Secure
(12
Kbit)
data on
Receiver
2.
The second receiver option is not yet supported,
so this bit has no
effect
when active.
R2
UN
SQ
Receiver
2 Unsquelch (A4/D0)
Active
when
the
Receiver
2
audio carrier squelch circuit
detects on-channel
RF
activity. R2
UN
SQ is used for audio gating (refer
to
RX2
ACT).
The second
receiver option is not yet supported, so
this bit has no effect when active.
GD TN DT
Guard Tone Detect (A5/D3)
Indicated that High Level Guard
Tone is being detected from the
Tx Audio
signal.
This bit
is also active
during
the
function
tone detect
window. The
TX
Audio
signal
is muted
while
GD TN DT
is active, in order
to
prevent remote control
tones from
being transmitted over
the air.
AUX DET
Auxiliary
Detect (A5/D2)
Indicates that an optional decoder is detecting on Receiver
1.
AUX
DET
can be
used
to
activate
RX1
ACT,
RX2
ACT, and
RPT PTT
in
a
manner similar to the R1
PL DT
and R1
UN
SQ qualifiers.
RPT
KD
Repeater Knock-down (A5/D1)
Disallows
a
repeater
PTT
when active. Inhibits in cabinet
repeat,
but allows
receive audio
to be
gated
to the
local speaker and wireline.
C-6
68P81092E11
3/19/94