APS EPM205-MRS, Техническое описание

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EPM205-MRS - Technical reference - Preliminary Page 10
Advanced Printing Systems
3.3 Keyboard connector
This connector allow the user to connect his own external keyboard with ON/OFF Line, Paper-Feed
buttons and status LED.
Since the standard EPM is supplied with a own keyboard, the following information is to be considered as
indication on how to connect a possible external keyboard, predisposed by the user.
EPM device connector
J3
User side
matching connector
Molex, 53048 Series 4 contacts (male)
Molex 51021 Series (female)
Contacts: 50079/50058.
Pin number Signal name
1 Gnd
2 ON/OFF line
3 Paper FEED
4 LED (cathode)
The external circuitry should be as follows:
(*) A serial resistor (390 Ohms) is placed on the EPM elec. board, setting the LED current at about 7 mA.
Pin 1 - Gnd
Pin 2 - ON/OFF Line
Pin 3 – Paper FEED
Pin 4 – LED *