– 22 –
3-1. Interface Specifications
This printer has a parallel interface to communicate with the computer. The
operating specifications of the parallel interface are as follows.
(1) Data transfer rate : 1000 to 6000 characters per second
(2) Synchronization : Via externally supplied STROBE pulses
(3) Handshaking : ACK and BUSY signals
(4) Logic level : Compatible with TTL level
3-2. Interface Timing
Fig. 3-1 Interface timing diagram
3. PARALLEL INTERFACE
TTT
A C K
Data
STROBE
BUSY
T:more than 0.5 microsec.
About 9ms
To Next Page
Loading...
