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ACK Timing
BEF and AFT: ACK leading edge occurs before trailing edge of BUSY. ACK trailing edge
occurs after trailing edge of BUSY.
AFT: ACK leading and trailing edges occur after trailing edge of BUSY.
DUR: ACK leading edge occurs before and trailing edge occurs at trailing edge of BUSY.
PAR: ACK TIMING
ENTER
PAR:ACK TIME>BEF
↓
PAR:ACK TIME:AFT
↓
PAR:ACK TIME:DUR
↓
STROBE Polarity
-: Printer latches data on falling edge of strobe signal.
+: Printer latches data on rising edge of strobe signal.
PAR: STRB POLARIT
ENTER
PAR:STROBE POL>-
↓
PAR:STROBE POL:+
↓
FAULT Polarity
-: When a printer fault exists, the FAULT signal is low.
+: When a printer fault exists, the FAULT signal is high.
PAR: FLT POLARITY
ENTER
PAR:FAULT POL>-
↓
PAR:FAULT POL:+
↓