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Appendix A – Technical Specifications 
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide (S000286G)                
29
 
 
Receiver Sensitivity 
-43 dBm under worst-case conditions 
AGC Dynamic Range 43 
dB 
Interface 
TIA/EIA RS-232C/ITU-T V.24/V.28  
Connectors 
DB25F RS-232C connector; 2 RJ-11 telephone jacks; power jack 
Cables 
Country-specific telephone; power cables; serial 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, 56K bps, 33.6K bps, 
14.4K bps, Off Hook, Terminal Ready, Error Correction, Fax. 
Speaker 
Internal speaker for call progress monitoring. 
Manual Control Power 
switch 
Environmental 
Temperature range 0°–50°C (32°–120°F) ambient under closed conditions; 
humidity range 20–90% (non-condensing) 
Power Requirements 
Global modems: 100–240 VAC, 50/60 Hz universal power supply  
 
Non-global modems: 115 VAC, 60 Hz or 230 VAC, 50 Hz power supply  
Power Consumption 
9 VDC, 300 mA maximum 
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 2 
years