Olivetti d-Color MF4003 Service Manual page 673

d-Color MF4003/MF3303
Bits (LSB-MSB)
14
15
16
17
18
19
20
21-23
24
25
26-27
28
29-44
45-48
(b) <INFO h Bit Assignment>
Bits (LSB-MSB)
0-3
4-11
12-14
15-21
22
23-26
27-29
30
31-46
47-50
(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)
Phase3
Calling S S PP
128T 16T 288T
Called
• 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
Value
0/1 3429 symbol / sec support
0/1 Ability to transmit at low carrier
frequency at 3000 symbol / sec
0/1 Ability to transmit at high carrier
frequency at 3000 symbol / sec
0/1 Ability to transmit at low carrier
frequency at 3200 symbol / sec
0/1 Ability to transmit at high carrier
frequency at 3200 symbol / sec
0/1 3429 symbol / sec transmission
0/1 Ability to lower the transmission level
than a preset value
0 to 5 Maximum tolerance of symbol rates
between transmission and reception
0/1 1=INFO 0 is sent from the CME modem
0/1 1664 signal point (33.6 K) ability
0 to 3 Clock source transmission
0/1 1=Correct INFO 0 frame is received during error recovery
CRC
1111 Fill Bits
Value
1111 Fill Bits
01110010 Bit string for frame synchronization (transmitted from the left side)
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.
0 to 127 The length of TRN which the modem of the transmitting side send in the Phase 3 (x 35 ms)
0/1 High carrier is user for data mode Tx.
0 to 10 Pre-emphasis filer index No.which is used for data transmission
0 to 5 Symbol rate of data transmission
0/1 Selection of parameters used for TRN.
CRC
1111 Fill Bits
Control channel start-up procedure
32T
16T or more
PPh ALT MPh
TRN
± 120T or less
70 5 ms
PPh ALT MPh
32T or less
Between 16T and 120T
* : Symbol interval
MPh E control channel data
MPh E control channel data
P-99
P THEORY OF OPERATION > 8. FK-517
Meaning
• 1: Yes
• 0: No
• 1: Yes
• 0: No
• 1: Yes
• 0: No
• 1: Yes
• 0: No
• 1: Yes
• 0: No
• 1: Yes
• 0: Disable
• 1: OK
• 0: No
• 1: Yes
• 0: 2400 symbol/sec
• 1: 2743 symbol/sec
• 2: 2800 symbol/sec
• 3: 3000 symbol/sec
• 4: 3200 symbol/sec
• 5: 3429 symbol/sec
• 0: No
• 1: Yes
• 0: Internal
• 1: External
• 2: Synchronous to the reception clock
• 3: Reserved
Meaning
0: 2400 ... 5: 3429 (symbol / sec)
• 0: 4 points
• 1: 16 points
Service Manual