DC3021 G.703/X.21 Converter
Specifications

• Network G.703 – 2 ΄ BNC for unbalanced (75W) 1 ΄ RJ45 socket for 120W balanced
• Equipment X.21 – 15 way ‘D’ type socket
• LEDs
  Line:
  • Green valid HDB3 data present
  • Red- no valid HDB3 data present
  • Yellow ( flash) –Bipolar Violations
  Loop:
  • Yellow (Flash)- unit in Loopback

• The unit requires to see the pattern ‘00001’ repeated solidly without error for a minimum of 5 seconds before the loopback circuitry is activated.

• The unit requires to see the pattern ‘001’ repeated solidly without error for a minimum of 5 seconds before the loopback circuitry is disabled.
  
  The Loopback circuitry can also be disabled either by a loss of power to the unit or by a loss of Network line signal for more than 5 seconds

• Input voltage 5VDC – 2.1mm jack socket, tip +ve 220/240VAC at 45-65Hz
• Consumption 2W max, Supplied with either UK (3 pin) or European (2pin) lump plug
• PSUs – specify at time of order
• Size:- 85 ΄ 37 ΄ 145mm (W ΄ H ΄ L)