With a laptop computer PROTEL99 PCB mapping, the layers of painting is very inconvenient, how to set up to press pagedown can draw layers, and automatically appear through the device more
A total of four lines! The first is the + 5V power cord! The second is the negative data cable! The third is the positive data cable! The last one is the ground wire!
You said the 110 patch panel should be 100 pairs of 110 voice jumper, this is mainly used in the voice system, from the telecommunications to pull up the number of cables over, and then through the jumper to each user
02S404 standard Atlas manufacturing Rigid waterproof casing for drinking water tank waterproof casing installation, after the completion of asbestos cement fill, fill the seal paste, should ensure that the contact surface without rust, patent leather, dirt, and clean and dry Flexible waterproof casing is generally applicable to the pipeline through the wall by the vibration or tight waterproof requirements of the structure; wall through the wall, in case of non-concrete should be converted to concrete walls, and must be a solidification of the casing wall Waterproof casing for construction, chemical, steel, water, sewage treatment and other units Waterproof casing Description: 1 Flexible filler material: asphalt, linen, polystyrene board, PVC foam board 2 Sealant: polysulfide sealant, polyurethane close to the paste 3 Casing through the wall in case of non-concrete walls, the local use of concrete walls, the pouring range should be larger than the wing diameter (D5) And the casing must be poured once in the wall 4 The thickness of the concrete wall should be less than otherwise the wall should be thickened or thickened on both sides, thicker part of the diameter of at least D5 +2005 Casing weight to L = 300 Calculate the wall thickness is greater than should be calculated separately
