Black Box MD403A user manual Frequency Stability ±0.01%, AGC Dynamic Range 43 dB

CHAPTER 1: Specifications

Carrier Frequencies ITU-T V.34: 1600, 1646, 1680, 1800, 1829, 1867, 1920, 1959, 2000 Hz

Carrier Frequencies ITU-T V.32bis/V.32: 1800 Hz

Carrier Frequencies V.22bis/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

Carrier Frequencies 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

Carrier Frequencies 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

Carrier Frequencies 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

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.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: (1) USB connector; (1) RJ-11 phone jack

Cables: (1) 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

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