Tally T2040, Maintenance Manual

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2.2
Interface specifications
Parallel interface bidirectional
Type of data
transmission 8-bit parallel interface (Centronics compatible)
IEEE-1284; Nibble mode
Transmission rate Max. 30 KHz
Signal status Low: 0.0 V to +0.4 V
High: +2.4 V to +5.0 V
Connection cable Material AWG no. 28 at least
Length up to 2.5 m
Twisted-pair cable with double-shield,
acc. IEEE Std 1284 – 1294
Interface connections Printer side: Amphenol 57-40360 (or compatible)
Cable side: Amphenol 57-30360 (or compatible)
Serial interface
Type RS232C interface
Synchronization Asynchronous
Transmission rate 600 bauds to 19,200 bauds
Signal status OFF (log. 1) -3 V to -15 V
ON (log. 0) +3 V to +15 V
Connection cable Length up to 15 m
Interface connections ITT Cannon connector
Series DB-9 S
Transmission protocol XON/XOFF, ENQ/STX, READY/BUSY,
Robust XON/XOFF, ACK/NAK, ETX/ACK
Capacity of data buffer 64 KB max.
Interface specifications Specifications
2-4