Data/Fax Modem User Guide

12
MultModemUSB User Guide
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
Connectors USB connector; two RJ-11 phone jacks
Cables One 7-foot RJ-11 phone cable
One 4-foot USB 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 Transmit Data, Receive Data, Carrier Detect, Off Hook,
Terminal Ready, Power
Environmental Temperature range 0°–50°C (32°–120°F); humidity range 20–90%
(non-condensing)
Dimensions 10.8 cm wide x 14.8 cm long x 2.9 cm high (4.25" x 5.8" x 1.15")
Weight 224 g (8 oz)
Limited Warranty 10 years