Instruction manual

E–2
Abbreviations and Signal Mnemonics
CA Cathode. . . . . . . . . . . . . . .
CC Card Cage. . . . . . . . . . . . . . .
CCF Card Cage Fan. . . . . . . . . . . . . .
CE Customer Engineer. . . . . . . . . . . . . . .
CHNG Change. . . . . . . . . . . .
CLK Clock. . . . . . . . . . . . . .
COLL Collector. . . . . . . . . . . . .
CONTLR Controller. . . . . . . . . .
CMD Command. . . . . . . . . . . . .
CMX Manufacturer’s designation of the controller board. . . . . . . . . . . . .
CNC Connector, Connection. . . . . . . . . . . . . .
CPI Characters Per Inch. . . . . . . . . . . . . . .
CTL Control. . . . . . . . . . . . . .
CTS Clear to Send. . . . . . . . . . . . . .
CUR Current. . . . . . . . . . . . . .
D0, D1, etc. Data Bit 0, Data Bit 1, etc.. . . . . . . .
DAT Data. . . . . . . . . . . . . .
DC Direct Current, Data Controller (a functional unit of. . . . . . . . . . . . . . .
the CMX board)
DCD Data Carrier Detect. . . . . . . . . . . . . .
DIAG Diagnostic. . . . . . . . . . . . .
DIFF Differential. . . . . . . . . . . . . .
DMA Direct Memory Access. . . . . . . . . . . . .
DP Data Processing, DataProducts. . . . . . . . . . . . . . .
DPMC Dot Plucker Memory Controller. . . . . . . . . . . .
DPU Data Processing Unit. . . . . . . . . . . . . .
DRAM Dynamic Random–Access Memory. . . . . . . . . . . .
DRVR Driver. . . . . . . . . . . . .
DSR Data Set Ready. . . . . . . . . . . . . .
DTR Data Terminal Ready. . . . . . . . . . . . . .
EC Engine Controller (a functional unit of the CMX board). . . . . . . . . . . . . . .
EEPROM Electrically Erasable/Programmable Read-Only Memory. . . . . . . . . .
EHF Exhaust Fan. . . . . . . . . . . . . .
EMIT Emitter. . . . . . . . . . . . .
EPROM Electrically Programmable Read-Only Memory. . . . . . . . . . .