Instruction manual

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SG Signal Ground
SHH Shuttle Hall (Effect)
SHM Shuttle Motor
SHUT Shuttle
SHUTL Shuttle
SIMM Single Inline Memory Module
SLCT Select (On-line)
Slew Rapid vertical paper movement
SMD Shuttle Motor Drive
SNA Systems Network Architecture
SPU Shuttle Processor Unit
SRAM Static Random-Access Memory
STAT Status or State
STBY Standby
STK Stacker
SW Switch
SYNC Synchronize
TCB Task Control Block
TEMP Temperature
TOF Top of Form (first print line)
TP Test Point
TTL Transistor-Transistor Logic
TXD Transmit Data
UART Universal Asynchronous Receiver/Transmitter
UDPH Upper Drive Phase
UNDEF Undefined
USART Universal Synchronous/Asynchronous Receiver/
Transmitter
VVolts
V
CC
Voltage at Collector
V
DD
Voltage at Drain
V
SS
Voltage at Source
VX A special ASIC on the CMX controller board
containing circuits that help the DC controller
operate. The initials VX do not signify words;
they serve only to identify this ASIC.