Schiller AT-102 Service Handbook page 131

AT-102 Service Handbook
LEDMAINS Signal indicating mains connected to operate LED indicator on the keyboard.
LCA Liquid crystal address - enable.
LCD KONT LCD contrast - sets the -18 V voltage level (from which the LCD backlight power is
generated) and thus the contrast of the screen.
LD1,2,3,4 Lower LCD data.
LDS Lower data strobe.
LOE Lower output enable.
LP Line synchronisation.
LSRAM Lower output enable - control signal for static RAM.
LWE Lower write enable.
M LCD control signal derived from FLM.
MCLK Motor clock - speed control for the printer motor.
MOD Control signal from the battery charging circuit.
MOFF Motor off.
MON Motor ON - printer motor enable signal.
NWTZ Mains supply.
NMI Non-maskable interrupt activated by the reset button.
OFF Off signal from the OFF key to switch off the power supply.
PDS Control signal derived from FLM (unity waveform 1/2 FLM frequency).
PM Paper mark signal.
PMARK Paper mark detection signal.
PMPON Pacemaker detection pulse.
PMNEG Pacemaker negative - indicates the trailing edge of a pacemaker pulse.
PMPOS Pacemaker positive - indicates the leading edge of a pacemaker pulse.
QTRRG QRS trigger - output signal.
RA Right arm.
RAS Row address strobe.
RES\p Error reset signal to inactivate the LCD.
RTS Ready to send - outgoing serial data, handshake with CTS.
RXD Receive data - incoming serial data.
R / W Read / Write
RES Reset.
RESLCD/ Resets / darkens the LCD.
Article Number 2. 540 028
SCHILLER AG 2002
Annex A
Glossary
Annex
A.5