Cable_Specification.docx

16 channel Ruggedized Trunk Cable Specification The cable specified herein is required for Airborne and Structureborne Noise testing. These cables shall be compatible with Integrated Electronic Piezoelectric (IEPE) accelerometers and microphones. The trunk cable shall consist of 16 channel ruggedized multi conductor DB50 female to DB50 male cables.

The DB50 Female to DB50 Male Multi-conductor Cables shall be required in the following lengths and quantities, and need dates:

All cables shall meet these specifications:

1. National Electrical Code (NEC) rating: CM (commercial communications)

2. Cable Electrical Connections: DB50 Female to DB50 Male

3. Cable Female Connector: 50 Ohm DB50 female connector with jackscrews.

4. Cable Male Connector: 50 Ohm DB50 male plug with jackscrews.

5. Cable Style: 16 sets of shielded twisted pair with an external shield and drain wire

6. Conductors: 24 AWG (American Wire Gauge) stranded (7x32) tinned copper conductors

7. Minimum Temperature Range: 0 degrees F to 150 degrees F

8. Impedance: 50 Ohms +/-2 Ohms

9. Conductor-to Conductor Capacitance: 31 pF/ft (+/-2pF/ft)

10. Minimum Bend Radius: 7 inches or less

11. Number of conductors: 2 per channel

12. Drain wire: 24 AWG stranded (7x32) tinned copper wire

13. Shield Type Over Conductors: Aluminum foil-polyester tape

14. Conductor insulation material: Polyvinyl chloride (PVC)

15. Outer shield material: Aluminum foil-polyester tape, 100% coverage

16. Outer shield drain wire: 18 AWG 7X26 stranded tinned copper, soldered to interior of D-sub connector housing at both ends of the cable.

17. Outer Protective covering: PVC

18. Pinouts: Cable electrical connector pinouts shall conform to Attachment 1 and Table 1 in order to be compatible with existing cable assemblies and electronics. Note that Pins 9 and 42 will be no output.

Table 1. Pinout Configuration

16 channel DB50 Female to BNC Male Cable Specification The cable specified herein is required for Airborne and Structureborne Noise testing. These cables shall be compatible with Integrated Electronic Piezoelectric (IEPE) accelerometers and microphones. The cable shall consist of 16- channel DB50 female to 16 BNC plug multi-conductor cables.

DB50 female to BNC male cable specifications

1. Quantity: 61

2. Cable length: 5 feet

3. Input: 50 Ohm DB50 female receptacle.

4. Output: (16) 50 Ohm BNC male plugs, one per channel, clearly labeled 1 through 16

5. Cable Style: 16 sets of shielded twisted pair with an external shield and drain wire

6. Number of conductors: 2 per channel

7. Conductors: 24 AWG (American Wire Gauge) stranded (7x32) tinned copper conductors

8. Impedance: 50 Ohms +/-2 Ohms

9. Minimum Temperature Range: 0 degrees F to 150 degrees F

10. Conductor-to Conductor Capacitance: 31 pF/ft (+/-2pF/ft)

11. Minimum Bend Radius: 7 inches or less

12. 16-channel shielded pair drain wires: 24 AWG stranded (7x32) tinned copper wire, connected to DB50 pins in accordance with Figure 1 and with 6-inch extensions for external grounding at BNC end.

13. External Shield Drain Wire: 18 AWG 7x26 stranded wire, soldered to DB50 connector housing and extended to 5 feet 6 inches from DB50 housing.

14. Shield Type Over Conductors: Aluminum foil-polyester tape

15. Cable bundling: Single channel conductor pairs shall be bundled and covered for first 2.5 feet from the DB50 connector with insulating material, and separated for the final 2.5 feet of length towards the BNC ends.

16. Pinout configuration: The DB50 Female Connector pinout configuration shall match the configuration shown in Attachment 1.

32-Channel Patch Panel Specification The Patch Panel specified herein is required for Airborne and Structureborne Noise testing. These patch panels shall be compatible with Integrated Electronic Piezoelectric (IEPE) accelerometers and microphones.

32 channel rack mount BNC to DB50 patch panel Specifications

1. Quantity: 33

2. Input (located on front): 32 50 Ohm BNC female jacks, clearly labeled 1 through 32

3. Output (located on rear): Two 50 Ohm DB50 male connectors, one for Channels 1-16, one for Channels 17-32

4. Dimensions: 2.5 inches (depth) x 5.5 in (width) x 19 in. (height)

5. Suitable for rack mounting

6. Pinout configuration: The two DB50 male connectors shall match the pinout configuration shown in Attachment 1 and Table 1.

Ruggedized Coaxial Low Noise Sensor Cables Specification The cables specified herein are required for Airborne and Structureborne Noise testing. These cables shall be compatible with Integrated Electronic Piezoelectric (IEPE) accelerometers and microphones. Item 5 shall be required in the following lengths and quantities:

Specifications for Sensor Cables:

1. Cable Electrical Connections: 10-32 plug to BNC Plug

2. Cable Style: Low noise coaxial cable

3. Minimum Temperature Range: 0 degrees F to 270 degrees F

4. Impedance: 50 Ohms +/-2 Ohms

5. Conductor-to Conductor Capacitance: 30 pF/ft (+/- 2pF/ft)

6. Maximum noise level: </= 3mV

7. Minimum Bend Radius: 2 inches

8. Number of conductors: 1

9. Conductor type: Solid, nickel plated copper covered steel, 29 AWG diameters

10. Shield Type Over Conductor: Braided, 90% minimum coverage nickel plated wire

11. Cable Jacket: Tetrafluoroethylene (TFE), 2 mm diameter

12. Low noise barrier material over conductor: Liquid graphite

13. Low noise barrier material over insulator: Graphite impregnated PTFE tape

14. Protective covering: Shrink tube over 90% minimum coverage steel braid. Steel braid covering shall be floating from the signal connectors and have a solder sleeve with 22 gauge wire pigtail installed at each end.

2-Pin Mil to BNC Cable Specification This specification is for cables for use with industrial accelerometers for machinery health monitoring on the Navy’s Electric Drive Test Facility in Philadelphia PA.

Specifications:

1. Cable type: 2-conductor shielded twisted pair with shield and drain wire

2. Conductor type: 19-strand 32 gauge AWG, tin-plated copper, FEP Teflon insulation

3. Connectors: 2-socket plug type MS3106, 5/8-24 thread on one end, BNC plug on the other end

4. Shield type: 90% minimum coverage braid made of tin-plated copper

5. Temperature range: 0-250 degrees F

6. Conductor to conductor capacitance (at 70 degree F): 36 pF/foot

7. Cable jacket diameter: 0.25 inch +/-0.1 inch

8. Cable jacket material: Polyerethane

9. Bend radius (minimum): 2.5 inch image1.png