I want to connect a serial device to cassiopeia E200. The serial device has a DB9 connector. I have the JK744 host convertor which provides a serial port on the Pocket PC but has a 20 pin serial port. Could somebody tell me the pinouts of the serial port present on the E200 or any information about the serial port present on the device. (I cannot use the serial cable provided by Csio since it adds too much bulk to my design) ...PLEASE HELP ME
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Re: E200 Serial Port URGENT
You will not find any matching connector to connect the JK-744 host adapter for attaching to the 9 pin serial port on the pc.
If you want full pinout details please contact me directly. Please do include some information on what you are trying to achieve. Maybe I can be of help in that department.
I however have a feeling that trying any micro surgery on the JK-744 or trying any kind of non Casio adapter is likely to mess up the JK-744 device itself.
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Ah, yes, I too used Waveteks back in the old days and I still have old PCs with serial cards in them which typically came with the PC. They were never really all that expensive to replace.
Anyway, newer PCs typically lack serial (DB9) ports/cards; and simply using a USB-to-DB9 adapter on a device designed to use a DB9 interface won't help the PC "find" the unit attached to it. Theres no easy "plug-and-play" there. The PC wants to have drivers for the unit installed manually, then with some luck something will show up in Device Manager. Conversely the old Wavetek wants to see X number of pins, etc. or it will assume somethings wrong.
There are a few "USB to RS-232 DB9 Serial Drivers" (e.g. "Prolific" brand) to be downloaded here and there, I can't tell how effective they are, depending on your PC hardware/software.
The D is the shape of the connector when looked at it on it's side. The second letter (A,B,C,D,E) defines the amount of pins in the D connector. "DB9" is actually called DE by the standard and the E=9 pins. A=15, B=25, C=37, D=50, E=9. This standard was set in place by ITT Corp (Not the school) in 1952, and DE-9 connectors were used for tons of applications. (Machinery, Cars, etc). If you are only referring to the computer uses, the connector is widely known as RS-232 or a "Serial" port. These ports in computers were/are used for devices like early printers, scanners, networking hardware, or even as a method of connecting to the Internet at one point.
If you have a BackUPS CS, you are probably either using it with the USB cable that is supplied or with the 940-0128A supplied by APC, which permits running the UPS in dumb mode. By building your own cable, you can now run the BackUPS CS models (and perhaps also the ES models) using smart signalling and have all the same information that is available as running it in USB mode.
The jack in the UPS may be easily use a 8 pin RJ45 connector. It is easy to construct the cable by cutting off one end of a standard RJ45-8 ethernet cable and wiring the other end (three wires) into a standard DB9F female serial port connector.
Though these UPSes are USB UPSes, APC supplies a serial cable (typically with a green DB9 F connector) that has 940-0128A stamped into one side of the plastic serial port connector.
Here is suggested scheme of original 940-0128A cable APC Part# - 940-0128A
computer --------- Inside the Connector--------- UPS
DB9-F | | RJ45
pin - signal | | Pin - Color
4 DSR ->|---+ |
| | diode resistor |
6 DTR ->|---+---->|----///---o kill power | 8 Orange
1 DCD <-|----+ |
| | |
2 RxD <-|----+----------------+--o low battery| 3 Brown
| | |
7 RTS ->|----------+--///--+ |
| | |
| +--///--+ |
| | |
8 RI <-|----+----------------+--o on battery | 2 Black
| | |
9 CTS <-|----+ |
| signal |
5 GND --|-----------------------o ground | 7 Red
3 TxD | |
| chassis |
Chassis/GND |-----------------------o ground | 4 Black
| Not connected | 1, 5, 6, 9, 10
have you checked to make sure that your serial port is enabled in your computer bios.
some computers require you to press del while booting other esc.
the message should read somthing in the line
press ???? to enter setup
go to the advanced tab
look in IO (Input/Output) devices or somthing similar.
Make sure Com1 or UART is enabled.
If the device is enabled, then check to make sure that your cable is making a connection properly.
(May require you to open up the unit) if out of warantee
To check that the cable is connected properly on the outside contact to db9 port.
Pin 1 2 5 are used on the db 9
on the inside there is a cable with 4 wires soldered to a board which links the outside to the inside.
Connect your serial cable to the GPS, using a multimeter check continuity by holding red lead on pin 1 of db9 serial port and checking each pin for continuity. only 1 should indicate continuity, continue with pin 2 and pin5 on serial port connector.
If you are sure that there is connection between cable and GPS, check the cable from the soldered points to the GPS Board. If those are ok, then you may have a problem on the board. Would then sugest you take it in for checking.
Just because it has a DB9 does not mean it is a direct connection. Many Bar code scanners have the DB9 connecting to a interface box and the interface box connects to the PC. If it is really a rs-232 scanner then you need to configure your serial port to the proper settings specified by symbol. But I am confident that this unit is missing the interface box.