Sharp FO IS125N - B/W Laser - All-in-One Service Manual page 98

FO-IS125N
6) Distinguishing Features (SSF336)
• 2-wire V.34 half-duplex fax modem mode with send and receive
data rates up to 33,600 bps
• Automatic Rate Adaptation (ARA) in V.34 half-duplex
• PSTN session starting
- V.8 and V.8bis signaling
• Receive dynamic range: -9 dBm to -43 dBm for V.34 half-duplex
7) SmartDAA Features
• Minimum support component count and cost
• Eliminates costly line transformers, relays, and opto-isolators
• Enables single, worldwide board configurations
• Digital PBX line protection
8) Configurations, Signaling Rates, and Data Rates
Configuration Modulation
V. 34 33600 TCM TCM
V. 34 31200 TCM TCM
V. 34 28800 TCM TCM
V. 34 26400 TCM TCM
V. 34 24000 TCM TCM
V. 34 21600 TCM TCM
V. 34 19200 TCM TCM
V. 34 16800 TCM TCM
V. 34 14400 TCM TCM
V. 34 12000 TCM TCM
V. 34 9600 TCM TCM
V. 34 7200 TCM TCM
V. 34 4800 TCM TCM
V. 34 2400 TCM TCM
V. 23 1200/75 FSK
V. 21 FSK
V. 17 14400 TCM TCM
V. 17 12000 TCM TCM
V. 17 9600 TCM TCM
V. 17 7200 TCM TCM
V. 29 9600 QAM
V. 29 7200 QAM
V. 29 4800 QAM
V. 27 ter 4800 DPSK
V. 27 ter 2400 DPSK
V. 21 Channel 2 FSK
Notes:
1. Modulation legend:
TCM: Trellis-Coded Modulation
FSK: Frequency Shift Keying
2. Adaptive; established during handshake:
Symbol Rate (Baud)
2400
2800
3000
3200
3429
Carrier Frequency Data Rate (bps) ±
(Hz) ± 0.01% 0.01%
Note 2 33600
Note 2 31200
Note 2 28800
Note 2 26400
Note 2 24000
Note 2 21600
Note 2 19200
Note 2 16800
Note 2 14400
Note 2 12000
Note 2 9600
Note 2 7200
Note 2 4800
Note 2 2400
1700/420 1200/75
1080/1750 Up to 300
1800 14400
1800 12000
1800 9600
1800 7200
1700 9600
1700 7200
1700 4800
1800 4800
1800 2400
1750 300
QAM: Quadrature Amplitude Modulation
DPSK: Differential Phase Shift Keying
V. 34 Low Carrier Frequency (Hz)
1600
1680
1800
1829
1959
• System side powered DAA operates under poor line current
supply conditions
• Wake-on-ring
• Ring detection
• Line polarity reversal detection
• Line current loss detection
• Pulse dialing
• Line-in-use detection—detects while on-hook
• Extension pick-up detection—detects while off-hook
• Remote hang-up detect—for efficient call termination
• Meets world-wide DC V-I Masks requirements
Symbol Rate Bits/Symbol
(Symbols/Sec.)
3429 only Note 2
3200 min Note 2
3000 min Note 2
2800 min Note 2
2800 min Note 2
2400 min Note 2
Note 2 Note 2
Note 2 Note 2
Note 2 Note 2
Note 2 Note 2
Note 2 Note 2
Note 2 Note 2
Note 2 Note 2
2400 only Note 2
1200 1
300 1
2400 6
2400 5
2400 4
2400 3
2400 4
2400 3
2400 2
1600 3
1200 2
300 1
PCM: Pulse Coded Modulation
V. 34 High Carrier Frequency (Hz)
5 – 7
Bits/Symbol
Data TCM
Note 2 Note 2
Note 2 Note 2
Note 2 Note 2
Note 2 Note 2
Note 2 Note 2
Note 2 Note 2
Note 2 Note 2
Note 2 Note 2
Note 2 Note 2
Note 2 Note 2
Note 2 Note 2
Note 2 Note 2
Note 2 Note 2
Note 2 Note 2
0 —
0 —
1 128
1 64
1 32
1 16
0 16
0 8
0 4
0 8
0 4
0 —
1800
1867
2000
1920
1959
Constella-
tion Points