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GEK-36150
Options and Accessories
SECTION 4
OPTIONS AND ACCESSORIES
This section gives a brief description of the more
common Printer options. Some of the descriptions
are technical in nature, and are written primarily for
the application specialist. Consult your local specialist
if you should have questions on these options.
ANSWER BACK
When the HERE IS pushbutton is pressed or the
control code ENO is received, an answerback
message, up to 20 characters,
is printed and
transmitted. The message can- be changed by your
local serviceman.
AUTOMATIC ANSWERBACK
Similar to the answerback option described above
except when the Printer is called, the Printer will
automatically print (if the motor is on) and transmit
its answerback message.
AUTOMATIC CARRIAGE RETURN
Any character which causes the column count to
advance beyond the last print position will
be
converted to a carriage return code and cause the
print position to automatically return to column one:
The character causing this carriage return will be lost.
AUTOMATIC MOTOR CONTROL
It allows use of the interface circuit CB (Clear to
Send) to control the motor. When CB comes on, the
motor turns on; and when CB turns off, the motor
turns off.
HIGH SPEED TRANSMISSION
(300 PRINTER)
One of the rate selections is 120. This option allows
the Printer to transmit information on tape at the
rate of 120 characters per second ( 1200 baud). All
printing is inhibited during this operation and the
Printer goes to the "Standby" status.
HORIZONTAL TABULATION
This option is described in Section 3, Operation.
LINE CONTROL
The following functions take place with this option:
1. Line Control - Printer recognizes control
codes to make a line change (change the state
of the data set lead CA). The following
control codes cause this function:
ACK
NAK
ETX (by making a jumper change, ETX will
not cause a line change).
EOT (optional, by making a jumper change.
EQT may be used also to make a line change).
2. Wait before transmit:
Control "READY" lamp by DLE?
ENO exchange.
3. Mandatory Disconnect - Forced Disconnect
when Printer recognizes D LE-EOT.
4. Printer recognizes NAK as equivalent to
"Break" or "Interrupt".
5. Terminal Status - Printer responds to ENO
with ACK or NAK to show the Printer status.
If the answerback option is included, ACK or
NAK will be the last character after the
answerback message.
PARITY ERROR DETECTION
The parity error detection feature examines each
locally generated or received character to determine
whether or not there is EVEN parity. In FULL
DUPLEX, received data only is checked for parity
errors.
If a character is detected with incorrect parity
(ODD), there are two possible sets of action
depending on the position of a jumper strap:
4-1
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