Black Box MD403A Manual do Utilizador descarregar pdf (Página 2)

AGC Dynamic Range: 43 dB

Approvals: FCC Parts 15B and 68; UL

1950; IC CS03; CE mark

Carrier Frequencies:

ITU-T V.35: 1600, 1646, 1680, 1800, 1829, 1867, 1920, 1959, 2000 Hz;

ITU-T V.32 bis/V.32: 1800 Hz;

V.22 bis/V.22 or Bell 212A Standard (2400 and 1200 bps):

Transmit originate: 1200 Hz; Transmit answer: 2400 Hz;

Receive originate: 2400 Hz; Receive answer: 1200 Hz;

ITU-T V.23 (1200 bps): Transmit originate: 390 Hz mark, 450 Hz space;

Receive originate: 1300 Hz mark, 2100 Hz space; Transmit answer: 1300 Hz

mark, 2100 Hz space; Receive answer: 390 Hz mark, 450 Hz space;

ITU-T V.21 (0 to 300 bps): Transmit originate: 980 Hz mark, 1180 Hz space;

Receive originate: 1650 Hz mark, 1850 Hz space; Transmit answer:

1650 Hz mark, 1850 Hz space; Receive answer: 980 Hz mark, 1180 Hz

space;

Bell 103/113 (0 to 300 bps): Transmit originate: 1270 Hz mark, 1070 Hz

space; Receive originate: 2225 Hz mark, 2025 Hz space; Transmit

answer: 2225 Hz mark, 2025 Hz space; Receive answer: 1270 Hz mark,

1070 Hz space

Client-to-Client Data Rates: 33.6, 31.2, 28.8, 26.4, 24, 21.6, 19.2, 16.8,

14.4, 12 kbps; 9600, 7200, 4800, 2400, 300 bps

Client-to-Server Data Rates: V.90 or K56flex™ speeds when accessing an ISP

type V.90 or K56flex server (actual speed depends on server capabilities and

line conditions)

Command Buffer: 40 characters

Data Compression: ITU-T V.42 bis (4:1 throughput), MNP

5 (2:1 throughput)

Data Format: Serial, binary, asynchronous

Data Modulation: FSK at 300 bps, PSK at 1200 bps, QAM at 2400, 4800, 9600 bps

(non-trellis), QAM with trellis-coded modulation (TCM) at 9600 bps; 12, 14.4,

16.8, 19.2, 21.6, 24, 26.4, 28.8, 31.2, 33.6, 56 kbps

Error Correction: ITU-T V.42 (LAP-M or MNP 3–4)

Fax Carrier Frequencies: V.21 Ch2 (half-duplex): 1650 Hz mark, 1850 Hz space

for transmit originate; 1650 Hz mark, 1860 Hz space for transmit answer;

V.27 ter: 1800 Hz originate/answer; V.29 QAM: 1800 Hz originate/answer;

V.17 TCM: 1800 Hz originate/answer

Fax Compatibility: ITU-T Group III, Class 1 and 2, T.4, T.30, V.21, V.27 ter, V.29,

V.17, and TIA/EIA TR29.2

Fax Data Rates: 14.4 or 12 kbps; 9600, 7200, 4800, 2400, or 300 bps

Fax Modulation: V.21 CH2 FSK at 300 bps (half-duplex); V.27 ter DPSK at 4800

and 2400 bps; V.29 QAM at 9600 and 7200 bps; V.17 TCM at 14.4, 12 kbps;

9600, 7200 bps

Flow Control: X-ON/X-OFF (software), RTS/CTS (hardware)

Frequency Stability: ±0.01%

Humidity: 20 to 90% relative, noncondensing

Intelligent Features: Plug and play; fully AT command compatible; autodial,

redial, repeat dial; pulse or tone dial; dial pauses; auto answer; caller ID;

EIA extended automode; adaptive line probing; automatic symbol and

carrier frequency during startup, retrain, and rate negotiation; call status

display, auto-parity, and data rate selections; keyboard-controlled modem

options; non-volatile memory; on-screen displays for modem option

parameters; command lines of up to 40 characters each; help menus;

remote configuration

Modem Compatibility: Proprietary: K56flex; ITU: V.90, V.42, V.42 bis, V.34+, V.34,

V.32 bis, V.32, V.29, V.22 bis, V.22; Bell: 212A and 103/113; ITU-T V.23 and V.21

in international versions

Operating Systems Supported: Windows 98, Windows 2000, Windows Me

Receiver Sensitivity: -43 dBm under worst-case conditions

Temperature: Operating: 32 to 122°F (0 to 50°C)

Transmit Level: -11 dBm (dial-up)

Connectors: (1) USB A connector, (1) RJ-11 phone jack

Size: 1"H x 1.3"W x 3.1"D (2.5 x 3.3 x 7.9 cm)

Weight: 0.1 lb. (<0.1 kg)

Specifications

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correction, V.42 bis data compression, and V.17 (14.4 kbps), Class 1 and 2,

Group III fax capabilities.

The modem pulse- or tone-dials, and recognizes dial tones and busy

signals for reliable call-progress detection. It can also detect AT&T

calling card tones and has a Caller ID function.

LEDs let you know the status.

The Portable USB Modem has four front-panel LEDs (Terminal

Ready, Off-Hook, Data, and Carrier Detect) that indicate status,

configuration, and activity. When Windows

detects and initializes

the modem, the Terminal Ready LED lights. The modem’s Off-Hook

LED lights when the modem is dialing, on-line, or answering a call

and flashes when the modem pulse-dials. And when the modem is

transmitting or receiving data to or from another modem, the Data

LED flashes. Lastly, when a valid carrier signal from another modem

is detected, the Carrier Detect LED lights.

Use it in another country.

The modem is FCC-registered for connection without notification

to the telephone company. But it also comes with a Global Wizard

program (included on the Installation CD-ROM) so you can use the

modem from one country to the next while adhering to country-specific

telco requirements. Simply choose a country from a pull-down menu in

the Global Wizard program, and the Global Wizard does the

rest, automatically setting up the correct operating parameters for the

modem’s operation in that country. You can also use AT commands to

do the same task. The Portable USB Modem is compatible with the

standard AT command set used by most communication programs.

Configure it locally…or from afar!

For easy modem setup and configuration, you get integrated

datacomm and fax software on CD-ROM with the modem. The bundled

software has a user-friendly graphical interface for use under Windows.

It simplifies control of the modem by guiding you through the process

of selecting your serial port, your port speed, and other variables, and

then storing your settings. You can also store frequently called phone

numbers and recall them with the stroke of a key or the click of a mouse.

While operating the Portable USB Modem in standard mode, you

can store up to two command lines or telephone numbers of up to 40

characters each in the modem’s nonvolatile memory.

The Portable USB Modem also supports remote configuration. This

network management tool enables you to configure modems anywhere

in your network from one location. With password-protected remote

configuration, you can issue AT commands to a remote Portable USB

Modem for maintenance or troubleshooting—just as if you were on-site!

The Flash Wizard utility lets you update the modem’s firmware when

new features are offered. Since the firmware is stored in flash memory,

you can upgrade it yourself in a few minutes by using a simple set of

procedures.

Other advantages:

Because it draws its power directly from the USB port and only uses

the battery when it’s plugged in, the modem enables you to get the most

life from your laptop’s battery. Compare that with many PC card modems;

they can drain a battery’s resources—even when they’re not in use.

Each time you turn on the modem, it performs an automatic self-test

to ensure proper operation. It also has three diagnostic tests: local

analog loopback, remote digital loopback, and local digital loopback.

These ITU-T V.54 loopback tests isolate telephone circuit and

transmission problems.

The modem also features self-resetting lightning protection to protect

it from electrical spikes on the telephone line.

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