i am connecting the output of the barcode reader to a max232 that will transform the 12v level to 5v level and then to a PIC microcontroller that will save the barcode to transmit it laterCould you provide a little more detail about your circuit? You're more than a little vague about how you have things setup.
thank youThey have been around for years.
Palm SPT1800
PDA Scanner
It depends entirely how it was designed.if the PC is supplying the Vcc for the serial device
which pin is responsible for the Supply?
Does the device need initialization before it will operate?i connected 5v supply to Pin 9 (i am using DB9 connector)
from the readings of multimeter the current drawn by Pin 9 is around 90mA So the barcode reader should be powered up but it doesn't !!
so what's wrong?
i think not because when i connected it to the pc it turned on immediatlyDoes the device need initialization before it will operate?
I did not locate a data sheet so I can't give specifics.
Mike.
Do you know if it is programmed to use the handshake lines? If connected to the computer the computer may be asserting one of the handshake lines and allowing the scanner to run. Maybe you need to set the scanner to default conditions to start, or verify how the scanner is setup.i think not because when i connected it to the pc it turned on immediatly
the datasheet is available in Lefty post in the link.
it a datasheet for all opticon barcode scanners
i configured the barcode reader to the RS232 configuration and default settings(no handshaking).Do you know if it is programmed to use the handshake lines? If connected to the computer the computer may be asserting one of the handshake lines and allowing the scanner to run. Maybe you need to set the scanner to default conditions to start, or verify how the scanner is setup.
Do you have an rs232 breakout box??
mike.
Ok on the settings. How do you get power when plugged into the PC?i configured the barcode reader to the RS232 configuration and default settings(no handshaking).
but still didn't power up from the 5v supply
and i want to know what's the rs232 breakout box?