Wavecom W40PC, Руководство пользователя

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Transmission Modes WAVECOM Decoders v6.15 W40PC, W41PC, W51PC
ALH(P:42,I1:5461,CH:3,WT:6,M:0,N:4)
Invitation to all mobile units belonging to group
42-5461 (P:42,I1:5461)
to transmit. The
message is sent on control channel
3 (CH:3)
, the TSC responses may be delayed by
6
slots
(WT:6) , no subdivision of the radio population is enabled (M:0) and the next frame contains 4
random access timeslots (N:4) .
A radio unit calls another unit with the same prefix:
AHY(P:79,I1:760,I2:770,D:0,P:0,CHK:1,E:0,AD:0)
General availability check on the called
(D:0)
unit
760 (I1:760)
sent before allocating a traffic
channel. The TSC is checking if the called unit is ready for a data call (CHK:1). The calling
party
770 (I2:770)
is requesting a non-emergency transaction. No data codeword
(AD:0)
is
appended to this AHY message.
GTC(P:79,I1:760,CH:427,I2:770,N:0)
Calling unit
770
and called unit
760
are directed to proceed with traffic on channel
427
(CH:427)
. The next frame contains
no
timeslots
(N:0)
.
A broadcast message:
BCAST(SYSDEF:5,SYS:20265,CH:520,SPARE:0,RSVD:00,ADJ:2)
Option for non-active radio units to determine the signal strength (SYSDEF:5) at the
following time slice on control channel
520 (CH:520)
of system
20265 (SYS:20265)
having
local serial number 2 (ADJ:2) .
NATEL
Parameter Value
Frequency range VHF/UHF
System SELCAL Analog
Modulation INDIRECT-FM
Receiver settings FM 12 kHz, narrow
Signal source AF (only)
Selective call systems are an efficient supplement to voice traffic.
The entire call number is transmitted by consecutive tones in decade sequence. When two
identical digits are to be transmitted consecutively, then an eleventh frequency is used as a
repetition identifier. If there more than two identical digits are to be transmitted the repetition
tone is appended to the digit tone (e.g. 22222 is transmitted as f2 fw f2 fw f2, where f2 is the
tone for “2” and fw is the repetition tone).
In most systems the accuracy of the single frequencies has to be 1/-1.5% of the
nominal value.
Decoding the selective calls is started by clicking on a system. If transmission and system
selection conform, the call sign is displayed on the monitor. In the “Options” menu a “Time
stamp” function can be enabled to add date and time to each call.
Tone Allocation
DIGIT NATEL
0 1633