Cronyx Site
About Cronyx
Products Prices Contact information Search English 
English Russian  Russian
Software Payment
What's new
F. A. Q.
Site map

Modem QLink-3000/M-E1

Typical transmittion range on 26 AWG (0.4 mm) cable

Modem QLink-3000/E1 QLink-3000/E1 Features:
  • Up to 10 km over single copper pair;
  • Line data rates from 208 to 2064 kpbs;
  • Data rates from 64 to 2048 kpbs;
  • Line code TC-PAM;
  • Line protection;
  • E1 (G.703 kbps) data port;
  • Local and remote loopbacks;
  • Integrated BER tester;
  • Console RS-232 port;
  • 48/60 VDC power;
  • Declaration of compliance D-MDPD-7909

The QLink-3000 family of short range modems provides high-speed data access over single-pair copper wires. It can transmit data with rates up to 2304 kbps (2048 kbps for model with single E1 port) for up to 7.6 km (on 26 AWG cable). Using lower guage copper wire may allow you to attain greater distances.

Models with two data ports includes multiplexer and allows to transmit two independent data streams over single cooper pair.

The QLink-3000/E1 modem can be DC powered.

The device setup and all diagnostics options are controlled from the special supervisory port (asynchronous RS-232, 9600, 8N1) or from remote device.

The device has an upgradeable firmware.

Currently available models are listed in Prices. Please, contact technical support if you are unsure which model to choose.


Line Interface
Line Copper twisted pair
Line Rate 208 - 2064 kbps
Loop Length Up to 7.6 km over 26 AWG copper wire
Connector Type RJ-45 (female 8 contacts)
Line Code TC-PAM
Transmit Timing Sources Internal Oscillator
From port (from E1 port receiver)
Overvoltage Protection SIDACtor
Overcurrent Protection Fuse
E1 interface
Connector Type RJ-45 (female 8 contacts)
Line Impedance 120 Ohm (Twisted Pairs)
Line Code HDB3
Frame Structure per G.704 or transparent G.703 2048 kbps stream
Receive Signal Attenuation Range from 0 to 43 dB (up to 2.0 km of 22 AWG twisted-pair cable)
Overvoltage Protection TVS
Overcurrent Protection Fuse
Control interface
Connector Type RS-232 DCE, DB-9 (female)
Protocol Asynchronous, 9600 bit/sec, 8 bit/symbol, 1 stop bit, no parity
Modem Control Signals DTR, DSR, CTS, RTS, CD
Diagnoctic modes
Loopbacks Local, Remote
BER Tester Built-in
Control Via control port RS-232 or from remote unit
Dimensions 180 mm x 156 mm x 36 mm
Weight 0,7 kg
Power source
DC power source 40-60 V
Power 20 VA Max
Temperature 0° - 50°ะก
Humidity 0 to 80 %, non-condensing

Typical transmittion range on 26 AWG (0.4 mm) cable

Line Rate 272 kbps 784 kbps 2064 kbps
Payload Rate 256 kbps 768 kbps 2048 kbps
Reach 26 AWG 7.6 km 5.4 km 4.4 km


Some of the documents are in Adobe® Acrobat® Reader® format

PDF  User's Manual for model QLink-3000/M-E1 in Russian

Return to Short Range Modems or Digital Communication Equipment

Copyright © 1996-2024 Cronyx