Modem Wiring Diagram


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Modem Wiring Diagram - a null modem cable is a rs 232 serial cable where the transmit and receive lines are crosslinked in some cables there are also handshake lines crosslinked pinout of null modem cables and layout of 9 pin d sub female connector and 25 pin d sub female connectorde 9 to de 9 de 9 to de 25 cables use this cable to connect two devices equipped with serial rs 232 interface this cable may be used to connect any rs 232 equipped device to puter connect two puters via serial port and so on a modem portmanteau of modulator demodulator is a hardware device that converts data between transmission media so that it can be transmitted from puter to puter historically over telephone wires the goal is to produce a signal that can be transmitted easily and decoded to reproduce the original digital data modems can be used with any means of transmitting analog signals from tech stuff rs 232 cables wiring and pinouts.
brief tutorial and pinouts for rs 232 rs422 485 t1 e1 and v 35 if you want to know more about rs 232 signals then this page may help but you may also need to lie down in a darkened room afterwards contents warning tigertronics has not verified the accuracy of all of the radio wiring information that is provided here this information is provided for reference only and is not intended to replace our detailed jumper installation procedure it is essential that you double check this information against your radio s manual before doing the actual installation home work connection diagram home works begin with a cable or dsl modem which connect to the inter via cable or phone lines the cable dsl modem then connects to the wan port on a wireless router workable devices such as puters game consoles media boxes and blu ray players can then directly be wired to the router with ether cables rollover.
cable you can identify a roll over cable by paring the two modular ends of the cable holding the cables side by side with the tab at the back the wire connected to the pin on the outside of the left plug should be the same color as the wire connected to the pin on the outside of the right plug sm1000 freedv adaptor the sm1000 allows you to run freedv without a pc on any radio just plug it into your ssb or fm radio and you now have digital voice dv buy cables4 puter c4c usb 2920 ftdi chipset high speed usb 2 0 to serial rs 232 db 9 converter serial adapters amazon free delivery possible on eligible purchases the ponents themselves have a designation as well and confusingly these also often have the form or capital letters followed by numbers for ex le irfz44 a specific ponent

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