Data Transmission 500mm Custom Wiring Harness

500mm Custom Wiring Harness 7P Black Data Transmission Connection Wires

Product information :

Support 12Gbps bandwidth. The standard length of the cable is 0.5m. It is mainly used on the MINI SAS 4i array card and used as an internal SAS cable. This extension cable supports 3Gbps*4Lane four-channel data transmission with a transmission rate of 12Gbps.

Parameter:

SAS (Serial Attached SCSI) is a new generation of SCSI technology. It is the same as the popular Serial ATA (SATA) hard disk. It uses serial technology to obtain better transmission speed and shorten the connection line. Improve internal space, etc. SAS is a brand new interface developed after the parallel SCSI interface. The design of this interface is to improve the performance, availability and expandability of the storage system, and to provide compatibility with SATA hard drives.
SAS interface technology is backward compatible with SATA. Specifically, the compatibility of the two is mainly reflected in the compatibility of the physical layer and the protocol layer. At the physical layer, the SAS interface is fully compatible with the SATA interface. The SATA hard disk can be used directly in the SAS environment. From the interface standard, SATA is a substandard of SAS, so the SAS controller can directly control the SATA hard disk, but SAS It cannot be used directly in the SATA environment, because the SATA controller cannot control the SAS hard disk; at the protocol layer, SAS is composed of three types of protocols, and the corresponding protocol is used for data transmission according to different connected devices. Serial SCSI protocol (SSP) is used to transmit SCSI commands; SCSI management protocol (SMP) is used to maintain and manage connected devices; SATA channel protocol (STP) is used to transfer data between SAS and SATA. Therefore, with the cooperation of these three protocols, SAS can be seamlessly combined with SATA and some SCSI devices.

The standard of the wire harness is mainly calculated by calculating its crimping rate. The calculation of the crimping rate needs to pass a special instrument. The standard tester for the wire harness cross section developed by Suzhou Oka Optical Instrument Factory is the most suitable for testing whether the wire harness crimping is qualified. Effective detector. Mainly through the steps of cutting, grinding and polishing, corrosion, observation, measurement and calculation.

1. The detection and judgment of the wire harness burn-out failure:

In the circuit of the power supply system, the wire bundle is burnt wherever it is grounded. The junction of the burnt and intact part can be considered to be grounded; if the wire bundle is burnt to the wiring part of an electrical equipment , Indicating that the electrical equipment is malfunctioning.

2. Detection and judgment of short circuits, open circuits, and poor contact faults between lines:

The wire harness is squeezed and impacted by the outside, causing damage to the wire insulation in the wire harness, resulting in short circuits between the wires. When judging, you can disassemble the wiring harness connectors at both ends of the electrical equipment and the control switch, and use the electric meter or test lamp to detect the short circuit of the circuit.

a. Wire break fault, in addition to the obvious breaking phenomenon, common faults mostly occur between the wire and the wire terminal. After some wires are broken, the outer insulation layer and the wire terminals are intact, but the inner core wire of the wires and the wire terminals have been broken. When judging, you can do a tensile test on the conductive wire and the wire terminal suspected to be broken. During the tensile test, if the wire insulation becomes thinner, you can confirm that the wire has been broken.

b. The line is poorly connected, and the fault mostly occurs in the connector. When a fault occurs, it will cause electrical equipment to not work properly. When judging, connect the power supply of the electrical equipment, touch or pull the relevant connector of the electrical equipment, when touching a certain connector, the electrical equipment will work normally and suddenly, indicating that the connector malfunction.