Instruction manual

E–6
Abbreviations and Signal Mnemonics
SCS SNA Character Stream. . . . . . . . . . . . . .
SEC Security (Key). . . . . . . . . . . . . .
SEL Select. . . . . . . . . . . . . .
SEN Sense, Sensor. . . . . . . . . . . . . .
SHH Shuttle Hall (Effect). . . . . . . . . . . . . .
SHM Shuttle Motor. . . . . . . . . . . . . .
SHUT Shuttle. . . . . . . . . . . . .
SIMM Single Inline Memory Module. . . . . . . . . . . . .
SLCT Select (On–line). . . . . . . . . . . . .
SMD Shuttle Motor Drive. . . . . . . . . . . . . .
SNA Systems Network Architecture. . . . . . . . . . . . . .
SPU Shuttle Processor Unit. . . . . . . . . . . . . .
SRAM Static Random–Access Memory. . . . . . . . . . . .
STAT Status. . . . . . . . . . . . .
STBY Standby. . . . . . . . . . . . .
STK Stacker. . . . . . . . . . . . . .
SW Switch. . . . . . . . . . . . . . .
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. . . . . . . . . . . .
USART Universal Synchronous/Asynchronous. . . . . . . . . . .
Receiver/Transmitter
V Volts. . . . . . . . . . . . . . . .
V
CC
Voltage at Collector. . . . . . . . . . . . . .
V
DD
Voltage at Drain. . . . . . . . . . . . . .
V
SS
Voltage at Source. . . . . . . . . . . . . . .
VX A special ASIC on the CMX board containing circuits. . . . . . . . . . . . . . .
that help the DC operate. The initials VX do not signify
words; they serve only to identify this ASIC.
WR Write. . . . . . . . . . . . . . .