d-Color MF4003/MF3303
P THEORY OF OPERATION > 8. FK-517
P-99
Bits (LSB-MSB)
Value
Meaning
• 1: Yes
14
0/1
3429 symbol / sec support
• 0: No
• 1: Yes
15
0/1
Ability to transmit at low carrier
frequency at 3000 symbol / sec
• 0: No
• 1: Yes
16
0/1
Ability to transmit at high carrier
frequency at 3000 symbol / sec
• 0: No
• 1: Yes
17
0/1
Ability to transmit at low carrier
frequency at 3200 symbol / sec
• 0: No
• 1: Yes
18
0/1
Ability to transmit at high carrier
frequency at 3200 symbol / sec
• 0: No
• 1: Yes
19
0/1
3429 symbol / sec transmission
• 0: Disable
• 1: OK
20
0/1
Ability to lower the transmission level
than a preset value
• 0: No
• 1: Yes
21-23
0 to 5
Maximum tolerance of symbol rates
between transmission and reception
• 0: 2400 symbol/sec
• 1: 2743 symbol/sec
• 2: 2800 symbol/sec
• 3: 3000 symbol/sec
• 4: 3200 symbol/sec
• 5: 3429 symbol/sec
24
0/1
1=INFO 0 is sent from the CME modem
25
0/1
1664 signal point (33.6 K) ability
• 0: No
• 1: Yes
26-27
0 to 3
Clock source transmission
• 0: Internal
• 1: External
• 2: Synchronous to the reception clock
• 3: Reserved
28
0/1
1=Correct INFO 0 frame is received during error recovery
29-44
CRC
45-48
1111
Fill Bits
(b) <INFO h Bit Assignment>
Bits (LSB-MSB)
Value
Meaning
0-3
1111
Fill Bits
4-11
01110010
Bit string for frame synchronization (transmitted from the left side)
12-14
0 to 7
• Output reduction width demanded by the reception modem (dB)
• When *the modem on the transmitting side can not reduce output* at INFO 0, the value is
set to 0.
15-21
0 to 127
The length of TRN which the modem of the transmitting side send in the Phase 3 (x 35 ms)
22
0/1
High carrier is user for data mode Tx.
23-26
0 to 10
Pre-emphasis filer index No.which is used for data transmission
27-29
0 to 5
Symbol rate of data transmission
0: 2400 ... 5: 3429 (symbol / sec)
30
0/1
Selection of parameters used for TRN.
• 0: 4 points
• 1: 16 points
31-46
CRC
47-50
1111
Fill Bits
(6) Phase 3 .....Training of the main channel equalizer
• Band division full-duplex method
• Transmission and reception of Phase 3 signals (S, PP, TRN) are executed by using parameter values which are determined by
exchanging INF Oh. (symbol rate, carrier frequency, pre-emphasis filter and transmission level)
Calling
Called
16T or more
70
±
5 ms
control channel data
PPh
E
ALT
MPh
MPh
S
PP
TRN
S
32T
128T 16T 288T
Phase3
Control channel start-up procedure
* : Symbol interval
120T or less
control channel data
PPh
E
ALT
MPh
MPh
Between 16T and 120T
32T or less
• The speed of the following signals (Phase 3) are determined by INFOh. (The following signals are used in the main channel in the half-
duplex procedure.)
S
Signal which sends alternately 0 point and a point which rotated 0 point counterclockwise by 90 degrees
Y119930-3
Service Manual
Summary of Contents for d-Color MF 4003
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