IBM R30 Operator's Manual page 165

General
Setup
Attributes
Tab
Trace
Additional Communication Attributes
The following communication attributes are for the 3151, 3161, and 3164 terminals.
Communication
Setup
Attributes
Operating mode
Line speed
Word length
(bits)
Parity
Stop bit
Turnaround
character
Interface
Line control
Break signal
(ms)
Send null
suppress
Send null
Response delay
(ms)
3151 3151
/11/31/41 /51/61 3161/3164
Settings Settings Settings
Field Field Field
All
3151/11/ 3151
31, /41) /51/61,
Settings Settings
Echo Echo
9600 bps 9600 bps
8 8
No No
1 1
CR CR
EIA-232 EIA-232
IPRTS IPRTS
500 500
On On
100 100
Description
The column tab stops are ignored,
and the tab operation depends on the
field attribute character positions.
Both inbound data (data to the system
unit) and outbound data (data from the
system unit) to and from the main port
can be transferred to the auxiliary port
without disturbing communications
with the system unit when the Trace
key is pressed.
3161
/3164
Settings Description
Echo Data entered from the keyboard on
the terminal is sent to the system unit
for translation and then sent back to
the display screen. Sometimes called
conversational mode.
9600 bps Uses the 9600 bps (bits per second)
line speed to communicate with the
system unit.
8 Selects eight bits as a data word
length (byte).
No Does not add a parity bit, and is used
together with the word length attribute
to form the 8-bit data word (byte).
1 Places a bit after a data word (byte).
CR Selects the carriage return (CR)
character as the line turnaround
character.
EIA-232 Uses the EIA-232 interface protocol.
IPRTS Uses the 'permanent request to send'
(IPRTS) signal to communicate with
system unit.
500 The terminal sends a 'break signal' to
the system unit within 500 ms after the
Break key is pressed.
Trailing null characters are not sent to
the system unit.
On Trailing null characters are sent to the
system unit.
100 The terminal waits for 100ms for the
system unit to respond.
Using the Diagnostics
8-5