Specifications

Dataproducts
Parallel
B-5Cable Pinouts
Return denotes twisted-pair return and is to be connected at signal-
ground level. When wiring the interface, be sure to use a twisted-pair
cable for each signal and never fail to complete connection on the
return side. To prevent noise effectively, these cables should be
shielded and connected to the chassis of the system unit and printer,
respectively.
All interface conditions are based on TTL level. Both the rise and fall
times of each signal must be less than 0.2 microseconds.
Data transfer must be carried out by observing the ACKNLG and
BUSY signal.
The cable must have an overall braided shield, Belden 8345 or equiv-
alent.
Connectors must have shielded housings. The overall shield must be
bonded to the shielded housings at both ends of the cable.
Dataproducts Parallel
The following table describes the Dataproducts parallel interface
cable that can be used with your printer.
Signal
Pin o.
Return
Pin No.
Signal Description Direction
1 2 Data Bit 3 In
11 - Parity Error (grounded)
12 - +5V (limited by 1K ohm
resistor)
Out
19 3 Data Bit 1 In
20 4 Data Bit 2 In
21 5 Online Out
22 6 Ready Out
23 7 Demand Out