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
| Dimension (mm) | |
|---|---|
| 19 " | 509(W) × 164(H) × 195(D) |
| 23 " | 610(W) × 164(H) × 195(D) |
Environment Condition
- Operation Temperature: 0ºC～+65ººC
- Humidity: 5%～95%RH