Specifications

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A-34
A LAUER driver
Circuit board diagram
X1 (DIN 41612 „C“ connector)
D1: 8-segment DIL, channel parameters
D2: 6-segment DIL, addressing
RIA (24V, earth, 0V): 3-pole inline connector for the active oper-
ation of the current sources
A4.3 Interfaces TTY1..3
Pin assignment of the TTY interfaces:
Pin no. Meaning
Case screen (connec. with frontplate and RIA shield. termin.)
1 „ „ „ „ „ „ „
10 TX+
12 current source 1 (20mA) active with stab. 24 V supplied
13 RX+
14 RX -
16 current source 2 (20mA) active with stab. 24 V supplied
19 TX -
21,24 0 V (external)
2 additional current sources per interface can be activated by connecting
stabilized 24 VDC to the 3-pole RIA terminal if a printer without it´s own
current source is connected to the PCS operating console (e.g. PCS
900). Then, these current sources supply the line current for the com-
munication between the PCS operating console and the PCS 830.3/1
TTYx interface while the current sources built into the PCS operating
console supply the line current for the printer port.
The PCS 736 cable can also be used when using these current sources.
Only the cable ends are to be reversed („Prog. contr. interface“ cable end
is plugged into the PCS operating console and the „PCS“ cable end is
plugged into the PCS 830.3/1).