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
con
trol channel data
PPh EALT MPh MPh
S PP TR
N
S
32T
128T 16T
288T
Phase3 Control channel start-up procedure
* : Symbol interval
120T or less
control channel data
PPh EALT MPh MPh
Between 16T a
n
d 120T
32T o
r 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
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