ModemModule Developer’s Guide

Carrier Frequencies

Transmit originate:

390

Hz mark

ITU-T V.23

 

 

450

Hz space

(1200 bps)

Receive originate:

1300

Hz mark

 

 

 

2100

Hz space

 

Transmit answer:

1300

Hz mark

 

 

 

2100

Hz space

 

Receive answer:

390

Hz mark

 

 

 

450

Hz space

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

 

 

 

Interface

Serial interface for EIA RS-232C/ITU-T V.24/V.28

Diagnostics

Local analog loop, local digital loop, remote digital loop.

Weight

0.02 Kg. (0.04 lb.)

 

 

Dimensions:

1.045" × 2.541" × 0.680"

 

 

 

(2.7 x 6.5 x 1.8 cm)

 

 

Power consumption:

Typical:

215 mA (1.3 W @ 5v DC)

 

Maximum: 420 mA (2.1 W @ 5.25v DC)

Environmental:

0-50° C;

humidity range 20–90% (non-condensing)

Approvals*:

UL 1950 approved

 

 

 

FCC Part 68 approved

 

 

 

Industry canada CS0s

 

 

 

EN60950

 

 

 

* Approvals are provided in controlled configurations and must be re-evaluated in end-user configurations.

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MT3334SMI

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Multi-Tech Systems MT3334SMI manual 1200 bps