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

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FO-IS125N
5 – 7
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
• 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
8) Configurations, Signaling Rates, and Data Rates
Configuration Modulation Carrier Frequency
(Hz) ± 0.01%
Data Rate (bps) ±
0.01%
Symbol Rate
(Symbols/Sec.)
Bits/Symbol
Data
Bits/Symbol
TCM
Constella-
tion Points
V. 34 33600 TCM TCM Note 2 33600 3429 only Note 2 Note 2 Note 2
V. 34 31200 TCM TCM Note 2 31200 3200 min Note 2 Note 2 Note 2
V. 34 28800 TCM TCM Note 2 28800 3000 min Note 2 Note 2 Note 2
V. 34 26400 TCM TCM Note 2 26400 2800 min Note 2 Note 2 Note 2
V. 34 24000 TCM TCM Note 2 24000 2800 min Note 2 Note 2 Note 2
V. 34 21600 TCM TCM Note 2 21600 2400 min Note 2 Note 2 Note 2
V. 34 19200 TCM TCM Note 2 19200 Note 2 Note 2 Note 2 Note 2
V. 34 16800 TCM TCM Note 2 16800 Note 2 Note 2 Note 2 Note 2
V. 34 14400 TCM TCM Note 2 14400 Note 2 Note 2 Note 2 Note 2
V. 34 12000 TCM TCM Note 2 12000 Note 2 Note 2 Note 2 Note 2
V. 34 9600 TCM TCM Note 2 9600 Note 2 Note 2 Note 2 Note 2
V. 34 7200 TCM TCM Note 2 7200 Note 2 Note 2 Note 2 Note 2
V. 34 4800 TCM TCM Note 2 4800 Note 2 Note 2 Note 2 Note 2
V. 34 2400 TCM TCM Note 2 2400 2400 only Note 2 Note 2 Note 2
V. 23 1200/75 FSK 1700/420 1200/75 1200 1 0 —
V. 21 FSK 1080/1750 Up to 300 300 1 0 —
V. 17 14400 TCM TCM 1800 14400 2400 6 1 128
V. 17 12000 TCM TCM 1800 12000 2400 5 1 64
V. 17 9600 TCM TCM 1800 9600 2400 4 1 32
V. 17 7200 TCM TCM 1800 7200 2400 3 1 16
V. 29 9600 QAM 1700 9600 2400 4 0 16
V. 29 7200 QAM 1700 7200 2400 3 0 8
V. 29 4800 QAM 1700 4800 2400 2 0 4
V. 27 ter 4800 DPSK 1800 4800 1600 3 0 8
V. 27 ter 2400 DPSK 1800 2400 1200 2 0 4
V. 21 Channel 2 FSK 1750 300 300 1 0 —
Notes:
1. Modulation legend:
TCM: Trellis-Coded Modulation QAM: Quadrature Amplitude Modulation PCM: Pulse Coded Modulation
FSK: Frequency Shift Keying DPSK: Differential Phase Shift Keying
2. Adaptive; established during handshake:
Symbol Rate (Baud) V. 34 Low Carrier Frequency (Hz) V. 34 High Carrier Frequency (Hz)
2400 1600 1800
2800 1680 1867
3000 1800 2000
3200 1829 1920
3429 1959 1959