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4.26 ACC DIS (ACCESS DISABLE) 6, D3
The ACC DIS bit is a status only bit, and is active when
the Access Disable station control module switch is actu-
ated. ACC DIS active indicates
that the following five
functions are inhibited:
1) Auto ID; 2) Alarm tones; 3)
Time-out
timers; 4) Repeater
PIT initiated from the pri-
mary receiver; and, 5) Wire line commands including Line
P1T. When Access Disabled, the station operating chan-
nel is selected with the CHANNEL
select switch, located
on the front panel of the remote control module. The pre-
vious station operating channel is "remembered"
by the
station control module and reinstated
when the Access
Disable switch is deactivated.
If there is no remote control
module connected as part of the station (repeater only op-
eration) the DMP channel display will show
$0,
but the
station control module will equate this with Channell
op-
eration.
4.27 EX DA DT (EXTERNAL DATA DETECT) 6, D2
The EX DA DT bit, when active, can cause the station
control module to mute TX, and/or local, and/or RXI
(Repeater)
audios, under code plug programming
con-
trol. This bit can allow or disallow selected mixing of these
audios with TX data audio onto the TX modulation
audio
line. Which of the three audios is muted depends
on
which PTT is keying the transmitter.
The intent is to op-
tionally prevent audio from mixing with TX Data audio.
Whether or not mixing occurs is determined
by a qualifier
for each channel in the station control module code plug.
4.28 DW SEL (DIGITAL VOICE PROTECTION
SELECT) 6, Dl
The DVP SEL bit selects either the primary DVP code
1,
or the secondary DVP subcode from the DVP control
module.
4.29 DW C/C (DIGITAL VOICE PROTECTION
CODED/CLEAR)
6, DO
The DVP C/C bit, when active, enables the encryption
and decryption
functions
of the DVP control module.
Therefore,
voice is transmitted
"coded".
When inactive,
this bit disables the encryption and decryption functions.
Therefore,
voice is transmitted
"clear".
4.30 ADDRESS 7, BITS 3 THRU 0 (RESERVED FOR
FUTURE USE) 7, D3 THRU 7, DO
These parameter
bits are reserved for future applications,
or special customer needs.
8
68P81114E03
4.31 TX RX C8, TX RX C4, TX RX C2, & TX RX Cl
(TRANSMITTER/RECEIVER
1 CHANNEL)
8, D3 TURU 8, DO
and
AUX C8, AUX C4, AUX C2, & AUX Cl
(AUXILIARY CHANNEL)
9,
D3 TURU
9,
DO
These eight bits determine
up to two sets of channels for
the station. A channel is a station state which chooses pre-
defined groups of station parameters
such as transmit and
receive frequencies
and coded squelch code. The channel
parameters
are defined
in the station control module
code plug. Also, the station control module code plug
contains the transmit, primary receive, and Channel-Scan
parameters.
The (second receiver control module) code
plug contains the second receiver parameters.
The TX/
RX Channel occupies Address
8,
Bits
3-0.
The Auxiliary
Channel (Second Receiver and Channel-Scan)
occupies
Address
9,
Bits
3-0.
Optionally,
the bits making up the
two channels
can be re-grouped
to form two different
channels, in which one channel has more. than four bits.
In this optional configuration,
the TX/RX Channel least
significant bit (LSB) is at Address
8,
Bit
O.
If more than
four bits are required to form the TX/RX channel repre-
sentation,
then those bits are taken from the auxiliary
channel assignments
beginning
with bit 0 of address 9.
The Auxiliary Channel
then starts (LSB) with the next
available bit after the last defined TX/RX channel bit and
continues to bit 3 of address 9. If the two channels are to
be independent,
then they cannot share any bits. This
means that the sum of the numbers of bits for the two in-
dependent
channels must be eight or less.
4.32 ADDRESSES
10 and 11,
BITS
3
THRU
0
(RESERVED FOR FUTURE USE)
10,
D3 THRU 10, DO and
11, D3 TURU 11, DO
These parameter
bits are reserved for future applications
or special customer needs.
4.33 REVERSE "WILD CARD" PARAMETER
BITS
Use of the reverse "wild card" bits (8 bits total, addresses
12 &
13)
requires the "wild card" module which resides
in the Control Option Tray. The "wild card" inputs (four
per card) activate or deactivate
the appropriate
Reverse
"wild card" MUXbus bit in response to a status signal ex-
ternal to the station. The eight reverse "wild card" MUX-
bus bits also have an additional definition. They are con-
sidered alarms which, when activated, translate
to alarm
tones and are sent to the remote control console via the
outbound wireline. Optionally,
the alarm tones may also
be transmitted.
The alarms are tone bursts (beeps). The
four bits in Address
12
are normally defined as internal
alarms and do not require
the "wild card" equipment.
Station conditions which the station control module mon-
7/15/90
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