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(10) Paper feed speed: 4 inches per second, plus 50 ms
settling delay. Paper is normally fed into the printer
from the back, like a typewriter, but a bottom-feed
option is available.
(11) Plotting resolution: horizontal, 60 positions per inch;
vertical, 48 positions per inch.
(12) Paper-out sensor: stops HyTerm and signals operator
when form supply is depleted.
1.3.6
Interface
Both
models communicate using ASCII code, and
contain a 158-character receive buffer. The Model 1620
HyTerm contains an 8-character send buffer.
The data communications interface exhibits the follow-
ing characteristics:
(1)
Electrically compatible with
EIA RS-232-C and
C.C.I.T.T. V-24.
(2)
Functionally compatible with
Bell
103A, 103E,
103F, 103G, 103H, 113A, and TDM or FDM
equipment.
(3)
Full/Half Duplex.
(4)
Even/odd/mark parity generation and error detection.
(5)
Framing error and overrun error detection.
(6)
Baud rate: 110, 150, or 300 standard; 1200 strap-
pable.
(7)
ETX/ACK protocol capability standard.
(8)
Ten-foot modem cable standard. Additional exten-
sion cables available.
1.3.7
Color
Standard color is Diablo textured warm black. Diablo
textured very light warm gray is also available.
1.4
FUNCTIONAL FEATURES
The microprocessor control and ROM resident micro-
program make available in the HyTerm several functional
featu res which are either extra-cost options or not even
available on other terminals. Most of these functions are
utilized by sending the HyTerm either a single ASCII
control code or an "escape" sequence, which is the ESC
character followed by another ASCII character. Other
featu res, such as automatic line feed, 10 or 12 characters-
per-inch spacing, etc., are locally controlled via switches.
1-3
1.4.1
Control Codes
(1 )
BS
Backspace
(2)
CR
Carriage Return
(3)
HT
Horizontal Tab (to preset tab stop)
(4)
LF
Line Feed
(5)
FF
Form Feed
(6)
ETX
Send ACK
(7)
BEL
Sound Audible Alarm
(8)
SP
Space
1.4.2
Escape Sequences
(1 ) ESC 1
Set horizontal tab stop
(2) ESC2
Clear all tab stops
(3) ESC 3
Graphics on
(4) ESC4
Graphics off (CR also clears)
(5) ESC 5
Forward Print on
(6) ESC 6
Backward Print on (CR also clears)
(7)
ESC 8
Clear individual tab stop
(8) ESC 9
Set left margin
(9)
ESCO
Set right margin
(10) ESCA
Print in red
(11 ) ESC B
Print in black
(12) ESC D
Negative half-line feed
(13) ESC U
Half-line feed
(14) ESC HT (n)
Absolute horizontal tab to position
(n) .
(15)
ESC VT (n)
Absolute vertical tab to line (n)
(16)
ESC LF
Negative line feed
(17) ESC RS (n)
Define vertical spacing equal to n-l
x 1/48 inch.
(18) ESC US (n)
Define horizontal spacing equal to
n-1 x 1/120 inch.
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