Van Mechelen 1000 SERIES User Manual page 8

1000 SERIAL INTERFACE TIMING
MARK = -8V
SPACE = +8V
N.B : DTR WILL BE SET FOR A MINIMUM OF 70µs AT THE END OF THE STOP BIT
ON EACH CHARACTER.
THIS CONDITION WILL BE LONGER FOR BUFFER FULL AND WILL BE SET
UNTIL RESET IF A PRINTER FAULT OCCURS.
Document No : DS8078 Issue : J Page 8