Radio Shack TRS-80 Service Manual page 8

1.3
SPECIFICATIONS
SUMMARY
DATA
INPUT
Data
Format
7
bit
ASCII
parallel
Input
Code
64
character
ASCII
Data Rate
Up
to
75,000
characters per
second
Buffer
One-line character buffer (up
to
132
characters)
Input Gating
Data Strobe
is
normally
gated with
acknowledge
of previous
character.
PRINTING
Printing
Method
Impact,
character-by-character, unidirectional
Dot
Matrix
5x7
Print
Format
10 to 16.5 characters per inch (operator adjustable)
Print
Rate
60
characters per second
at
10 cps
100
characters per second
at
16.5 cps
Number
of Copies
26-1
1
50
Prints original and one carbon copy
261
152
Prints
original
and up
to four carbon
copies
Character Set
Standard 64
character
ASCII. Optional 5x7, 64
character
sets
available
PAPER
ADVANCE
Vertical
Format
6
lines
per inch
Paper Entry
Rear Paper Feed
Auto
Line
Feed
Automatic
line
feed on
carriage return. Disable by option
Paper Feed
2 6-1150
9.8 inches (250
mm)
wide paper
26
"
1152
12.1
inches
(307
mm) maximum
width
10.2 inches (259
mm) maximum
print
width
CONTROLS/INDICATORS
Switches
Print
and Power
Indicators
Power
Manual
Controls
Forms
Thickness, Paper
Advance,
Print Density
PHYSICAL/ENVIRONMENTAL/ELECTRICAL
Height
8
inches (203
mm)
De
P
th
19.5 inches
(495
mm)
Width
1
9.8 inches (503
mm)
Weight
45
lbs
(20
kg)
Temperature
Operating 40°
to
100°F
(4.4° to
37.7°C)
Storage _40°
to
140°F (-40°
to
60°C)
Humidity
P
era ting
20%
to
90%
(No
condensation)
Stora
g e 5%
to
90%
(No
condensation)
Input Voltage
60
Hz, 120
VAC
1-3