IBM 5280 Technical Newsletter page 116

CBS coupler diagram 293
CCB 278
CCB error table format 224
CCB status bytes 226
CCITT 310
COT coupler diagram 295
centering adjustment 27
centering ring location 22
chase command 343
CLEAR command 354
code violation, printer 271
command key sequence 255
command register (EAR) 253
commands, communications 284
common area in main storage 245
communications
adapter registers 287
attachment 276
cable connections 154
cable diagrams
OOSA 146
EIA/CCITT 144
38LS 148
commands 284
data trap 276
data trap program (TCOMEREP) 198
binary NRZI and Non-NRZI example 200
BSC examples 201
SOLC NRZI and Non NRZI example 199
EIA/CCITT interface testers 141
error table display example 223
facilities characteristics
nonswitched 293
switched 297
feature description 244
lOB 279
line plate
jumpers 134
location 61
MPU 277
MPU card jumpers
attenuator 123
EIA/CCITT 123
ROS patch 123
2·wire or 4-wire selection
MPU responses 286
object code instructions 278
operation examples 279
receive 282
transmit 279
power supply card
location 3
removal 74
replacement
PT-2 line monitor
TP line monitor
typical operation
38LS
identification
74
141
141
277
124
personalization 127
368 '
123
communications power. supply card
location 3
removal 74
replacement 74
configuration 245
connector J02 signal lines 43
connector J03 signal lines 43
Contrast control
adjustment 23
location 1
removal 10
replacement 10
control panel
location 3
removal 7
replacement 7
CRT location 3
CRTTEST 193
OACTLU command 347
OACTPU command 346
data buffer register (lOOB) 253
data flow example, keyboard/display 254
data register (100) 253
data station adapter card 34
data station cover
removal 4
replacement 4
data stations
5281 239
5282 239
data trap 276
DC distribution 64
OCP
control 185
display example 183
error messages 186
how to use 183
OOSA 304
cable diagram 146
idle characters 294
interface lines and diagram
jumpers
133
out-of-service characters
transmission rates 304
transmission signal 305
transmit levels 305
308
307
zero suppression characters 306
device status
diskette 220
keyboard/display 219
printer 221
diagnostic diskettes 177
diagnostic loader program 179
dis.kette adapter 261