Kyocera FS 1020D FS-1020D Operation Guide Rev 1.4 - Page 82
SG - Signal Ground - Pin 7, DTR - Data Terminal Ready - Pin 20, RS-232C Interface Voltage Levels
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Serial Interface (Option) SG - Signal Ground - (Pin 7) All signals can transmit between the printer and the host computer to send each signal with a signal ground. DTR - Data Terminal Ready - (Pin 20) This output is used as a buffer nearly-full handshake line. It is held high (above 3 volts) when the buffer can accept more data. RS-232C Interface Voltage Levels The voltage levels of the interface signals conform to EIA RS-232C specifications. SPACE is from 3 volts to 15 volts. MARK is from -3 volts to -15 volts. Voltages between -3 volts and 3 volts are undefined. B-8
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Serial Interface (Option)
B-8
SG - Signal Ground - (Pin 7)
All signals can transmit between the printer and the host computer to send
each signal with a signal ground.
DTR - Data Terminal Ready - (Pin 20)
This output is used as a buffer nearly-full handshake line. It is held high
(above 3 volts) when the buffer can accept more data.
RS-232C Interface Voltage Levels
The voltage levels of the interface signals conform to EIA RS-232C
specifications. SPACE is from 3 volts to 15 volts. MARK is from -3 volts to
-15 volts. Voltages between -3 volts and 3 volts are undefined.