19 56T DDF Digital distribution Frame  

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  • 19 56T DDF Digital distribution Frame
  • 19 56T DDF Digital distribution Frame
  • 19 56T DDF Digital distribution Frame
  • 19 56T DDF Digital distribution Frame
Model:
 
Product Description:
  • 3U/4U, 19" 64circuit DDF/23" 84circuit DDF
  • Special designed for small requirement
  • Providing a single site for terminating, cross-connecting, testing, and maintaining DS-1 signals.
Product Character
  • Four-circuit, plug-in module
  • Internal printed board with gold contacts for power (-48V), return power, and shield ground
  • Replaceable, single-circuit Dedicated Digital Jack (DDJTM)
  • Red, yellow, or green LEDs
  • Attached 4 front jumper pin
  • Special designed jumper wire enclosures on both side
Product Specifications
Insertion Loss <0.2dB(DC~3MHz)
Monitor Level -20dB±1dB (DC~3MHz)
Impedance

E1-120Ω±5% (@1024KHz)
T1-100Ω±5% (@772KHz)

Contact Resistance ≦0.02Ω
Cross Talk E1: <-56dB
T1: <-60dB
Insulation Resistance >1,000MΩ
Power Requirement -48VDC; electric current of every LED <10mA
Jack Life Max. 7 lb force to insert and Min. 1 lb force to withdrawal the plug . After repeating 10000 times , the result is OK.

 

Dedicated Digital Jack (DDJTM) Specifications

Electrical

  • Insertion Loss: <0.50dB at 772 KHZ, <0.50dB at 1.576 MHZ
  • Crosstalk: DS1≧-60dB, DS1C≧-60dB.
  • Return Loss: ≧-26dB @ 772 KH
  • Contact Resistance: ≧0.01Ω
  • Characteristic Impedance: 100Ω-110Ω

Mechanical

  • Insertion Force: 4.17 lbs average
  • Withdrawal Force: 5.21 lbs average
  • Life: Minimum 10,000 cycles insertion/withdrawal cycles
  • Vibration: Per MIL-STD-202F, method 201A

Environmental

  • Salt Spray: Per MIL-STD-202F, method 101D
  • Moisture Resistance: Per MIL-STD-202F, method 106E
  • Thermal Limits: -40°C ~ +65°C operating, -55°C ~ +85°C non-operating
  • Thermal Shock: Per MIL-STD-202, method 107D℃
  • Humidity: 0% ~ 95% operating and non-operating

 

Dimension

Type Dimension (mm)
19 " 509(W) × 164(H) × 195(D)
23 " 610(W) × 164(H) × 195(D)

Environment Condition
 



     
  • Operation Temperature: 0ºC~+65ºC

  •  
  • Humidity: 5%~95%RH



 

Environment Condition

  • Operation Temperature: 0ºC~+65ºC
  • Humidity: 5%~95%RH