Service manual

ManualsBrandsSharp ManualsBusiness equipmentFO IS125N - B/W Laser - All-in-One

100

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