Multi-Tech Systems MT2834ZDX ユーザーズマニュアル

Appendix B – Technical Specifications 

Multi-Tech Systems, Inc. MT2834ZDX User's Guide 

29

 

 
Your MT2834ZDX fax modem meets the following specifications: 
 
Model Numbers MT2834ZDX, MT2834ZDXb 

Data Rates (Modem) 33.6K and 31.2K (ZDXb only), 28.8, 26.4K, 24K, 19.2K, 16.8K, 14.4K, 12K, 9600, 7200, 4800, 
2400, 1200 and 0-300 bps 

Data Rates (Fax) 14,400, 9600, 4800 and 2400 bps  

Data Format (Modem) Serial, Binary, Asynchronous 

Compatibility (Modem) ITU-T V.34, AT&T V.32terbo, ITU-T V.32bis, V.32, Bell 212A and 103/113, ITU-T V.22, 
V.22bis, V.42, V.42bis 

Compatibility (Fax) ITU-T Group 3, T.4, T.30, V.21, V.27ter, V.29, V.17, and EIA TR29.2 

Error Correction ITU-T V.42 (LAP-M or MNP 2, 3 or 4) 

Data Compression ITU-T V.42bis (4:1 throughput) or MNP 5 (2:1 throughput) 

Speed Conversion Serial port data rates adjustable to 300, 1200, 2400, 4800, 9600, 19.2K, 38.4K, 57.6K and 
115.2K bps 

Mode of Operation Half or full duplex over dial-up lines; automatic or manual dialing, automatic or manual answer  

Flow Control XON/XOFF, hardware (RTS/CTS), HP (ENQ/ACK) 

Intelligent Features Fully AT command compatible, autodial, redial, repeat dial, pulse or tone dial, dial pauses, call 
status display, auto parity and data rate selections, keyboard-controlled modem options, on-screen displays for 
modem option parameters, command lines of up to 60 digits each, and help menus  

Command Buffer 60 characters 

Modem Modulations FSK at 300 bps, PSK at 1200 bps, QAM at 2400, 4800, and 9600 bps (non-trellis), QAM with 
trellis coded modulation (TCM) at 9600, 12K, 14.4K, 16.8K, 19.2K, 21.6K, 24K, 26.4K, 28.8K, 31.2K and 33.6K bps  

Fax Modulations V.21 CH2 FSK at 300 bps, V.27ter DPSK at 2400 and 4800 bps, V.29 QAM at 7200 and 9600 bps, 
V.17TCM at 7200, 9600, 12K, and 14.4K bps 

Fax Carrier Frequencies V.21 Ch2 (half duplex):  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: 1700 Hz originate/answer 
V.17 TCM 1800 Hz originate/answer 

Transmit Level -13 dBm 

Frequency Stability +/-0.01% 

Receiver Sensitivity -43dBm under worst case conditions 

AGC Dynamic Range 43 dB 

Interface Connectors EIA RS-232C/ITU-T V.24/V.28 DB25 RS-232C connector; two RJ-11 phone jacks, power jack 

Cables One 14-foot RJ-11 phone cable (USA); external power transformer and cord 
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, 28.8K bps, 14.4K bps, 9600 bps, Off Hook, 
Terminal Ready, Error Correction, Fax 

Speaker Command-controlled speaker for call progress monitoring 

Manual Control Power switch 

Environmental Temperature range 0

o

-50

o

C (32

o 

- 120

o

F); humidity range 20-90% (non-condensing) 

Power Requirements 100-130V AC, 50/60 Hz, 0.1A/5W 

Dimensions 10.8 cm wide x 14.8 cm long x 2.9 cm high (4.25” x 5.8” x 1.15”)