Xerox 4235, Installation Planning Manual

Page: 73 / 148

SYSTEM CONFIGURATION
XEROX 4235 LPS INSTALLATION PLANNING GUIDE 6–7
Table 6–2 lists the pin assignments and signals.
Table 6–2.
DataProducts pin assignments and signals
Signal name Pin*
#
Source Description
DATA 1 B, D Host computer system Data 1 through Data 8: Input data levels. A high
represents ONE; a low represents ZERO.
DATA 2 F, J Host computer system
DATA 3 L, N Host computer system
DATA 4 R, T Host computer system
DATA 5 V, X Host computer system
DATA 6 Z, b Host computer system
DATA 7 n, k Host computer system
DATA 8** d, f
or
p, s
Host computer system
DATA j, m Host computer system
STROBE A 0.5 microsecond pulse (minimum) used to clock
data from the processor to the 4235 LPS logic.
DEMAND E, C 4235 LPS Indicates that the system controller is capable of
receiving a character.
READY CC, EE 4235 LPS Indicates that the system controller has powered
up successfully.
ONLINE y, AA 4235 LPS After warm–up, this signal is ONE, unless the print
file is full.
Interface
Connect x 4235 LPS Pins X and V provide electrical continuity only.
Verify v
Spare U 4235 LPS
The following pins are not used: A, H, K, M, P, S, U, W, Y, BB,
DD, FF, HH, a, c, e, h, r, t, u, w, z.
* The second pin of the pair is the twisted signal return (+0V).
** Either d, f or p, s can be used for the eighth bit.