Owner's manual

Specifications
Appendix D
D3
RS-232-C Specifications
Receiver Circuit, Control:
(pins 4, 7, and 20)
Isolation:
500Vdc between customer and
PC system circuitry
T ypical Input V oltage Range :
+3 to +25Vdc for Request to
Send or Data T erminal Ready
-3 to -25Vdc for signal inhibit
T ypical Input Impedance:
3k to 7k ohms for +3 to +25Vdc,
and -3 to -25Vdc
Receiver Circuit, Data:
(pins 2 and 7)
Isolation:
500Vdc between customer and
PC system circuitry
T ypical Input V oltage Range:
+3 to +25Vdc for space state
-3 to -25Vdc for mark state
T ypical Input Impedance:
3k to 7k ohms for +3 to +25Vdc,
and -3 to -25Vdc
T ransmitter Circuit:
(pins 3, 5, 6, and 7)
Isolation:
500Vdc between customer and
PC system circuitry
Output V oltage Range:
+5 to +15Vdc for space state
-5 to -15Vdc for mark state