1. Common errors in schematics
(1) The ERC reports that the pins are not connected to the signal: a. I / O attributes are defined for the pins when creating the package; b. Inconsistent grid attributes are modified when the component is created or placed, and the pins are not connected to the line; c.
The direction of the pin is reversed when creating a component, and it must be connected to the non-pin name end.
(2) The component runs out of the drawing circle: the component is not created in the center of the chart paper of the component library.
(3) The network table of the created project file can only be partially transferred into pcb: when the netlist is generated, it is not selected as global.
(4) When using multi-component components created by yourself, do not use annotate.
2. Common mistakes in PCB
(1) When the network is loaded, it is reported that NODE was not found: a. The components in the schematic diagram use packages that are not in the pcb library; b. The components in the schematic diagram use packages with inconsistent names in the pcb library; c.
The components in the schematic use packages with inconsistent pin numbers in the pcb library. Such as a triode: pinnumber in sch is e, b, c, and pcb is 1, 2, 3.
(2) When printing, you can't always print on one page: a. There is no origin when creating the pcb library; b. The component has been moved and rotated many times, and there are hidden characters outside the pcb board boundary. Choose to show all hidden characters,
Reduce the pcb, then move the character to the border.
(3) The DRC report network is divided into several parts: it means that the network is not connected, look at the report file and use the CONNECTEDCOPPER option to find it. In addition, remind friends to use WIN2000 as much as possible to reduce the chance of blue screen; export the file several times to make a new DDB file, reduce the file size and the chance of PROTEL zombies. If the design is more complicated, try not to use automatic wiring. In PCB design, wiring is an important step to complete the product design. It can be said that the previous preparations are done for it. In the entire PCB, the design process of wiring is the most limited, the skills are the finest, and the workload is the largest. PCB wiring includes single-sided wiring, double-sided wiring and multilayer wiring.
There are also two wiring methods: automatic wiring and interactive wiring. Before automatic wiring, you can use interactive to pre-wire the more stringent requirements. The side lines of the input and output should avoid adjacent parallel to avoid reflection interference. If necessary, ground lines should be added for isolation. The wiring of two adjacent layers should be perpendicular to each other, and parasitic coupling is likely to occur in parallel.
Sisal & Jute &Manila Rope
Product Features
Sisal rope, Manila rope, Jute Rope is a natural fiber rope made from
natural agave fiber, sisal rope is both economic and biodegradable. Offering moderate stretch, this general-purpose rope is used for agriculture and shipping. Sisal rope is easy to grip and knots well, moderate strength and pliability, Bundling rope for farming, shipping and DIY household projects.
Manila rope should not be confused with sisal rope. Both are natural fiber ropes and similar in color. However, manila is stronger, is darker in color and is treated during the manufacturing process with a preservative type oil.
Product Applications
Sisal rope, Manila rope, jute rope is easy to grip and knots well, moderate strength and pliability, Bundling rope for farming, shipping and DIY household projects.
FAQ:
Q: How about payment terms?
A: 30% TT deposit +70% TT against the B/L copy within 3 days.
Q.:What about the lead time?
A: We need 3-7 days to get the samples ready, for bulk goods, it will cost 15-60days,up to the quantity.
Sisal Rope,Jute Rope,Manila Rope,Colored Jute Rope
ROPENET GROUP CO.,LTD , https://www.cnparacord.com