Multitech MTA128ST-USB Guide de l'utilisateur télécharger pdf (Page 11)

Chapter 1 - Introduction and Description

Carrier Frequencies

Transmit originate: 980 Hz mark

ITU-T V.21

1180 Hz space

(0–300 bps)

Receive originate: 1650 Hz mark

1850 Hz space

Transmit answer: 1650 Hz mark

1850 Hz space

Receive answer: 980 Hz mark

1180 Hz space

Carrier Frequencies

Transmit originate: 1270 Hz mark

Bell 103/113

1070 Hz space

(0–300 bps)

Receive originate: 2225 Hz mark

2025 Hz space

Transmit answer: 2225 Hz mark

2025 Hz space

Receive answer: 1270 Hz mark

1070 Hz space

Fax Carrier

V.21 Ch2 (half duplex):

Frequencies

1650 Hz mark, 1850 HZ space for transmit originate

1650 HZ mark, 1850 Hz space for transmit answer

V.27ter: 1800 Hz originate/answer

V.29 QAM: 1800 Hz originate/answer

V.17 TCM: 1800 Hz originate/answer

Transmit Level

-11 dBm (dial-up)

Frequency Stability

±0.01%

Receiver Sensitivity

-43 dBm under worst-case conditions

AGC Dynamic Range

43 dB

Connectors

USB connector; one RJ-11 phone jack

Cables

One RJ-11 phone cable

Note: Any cables connected to the computer should be shielded to

reduce interference.

Diagnostics

Power-on self test, local analog loop, local digital loop, remote digital

loop.

Indicators

LEDs for Data, Carrier Detect, Off Hook, Terminal Ready

Environmental

Temperature range 0°–50°C (32°–120°F); humidity range 20–90%

(non-condensing)

Dimensions

3 cm wide x 8 cm long x 2.5 cm high (1.25

x 3.13

x 1.0

)

Weight

62 g (2.2 oz)

Limited Warranty

10 years

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 83 84

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Multitech MTA128ST-USB Guide de l'utilisateur Page 11

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