Specifications - Radio Shack TRS-80 PT-210 Service Manual

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Specification
Data Transmission
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Communication method Start-Stop Asynchronous
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Communication speed
1 10/300 bps; Switch selectable
1 1 0 bps (1 1 bit/character)
300 bps
d
Obitlcharacter)
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Communication mode
Half/Full duplex; Switch selectable
ASCII for Information Interchange
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Line status
On line/Off line; Switch selectable
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Line buffer..
. 4 8 characters; On received
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Interface. Acoustic coupling
RS232C (Optional) (CAT. No. 76-1 002)
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Parity.
Odd., Even, Ignore; User selectable
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Keyboard Matrix full keyboard
99 codes generated
67 printable characters
32 control characters
Printer
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Method. Non-impact, thermal-paper printing
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Head life.. . 2 0 million word
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Paper.
. 8 - 1 /2" (1 00 ft) (CAT. No. 76- 1003)
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Character size..
.2.7 mm
X
2.0 mm (7
X
5 dot-matrix)
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Line length.. . 8 inches
1 0 character per inch
80 character per line
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Line spacing..
. 6 lines per inch
Printing rate
50 characters per second; except C R time
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CR/LF
Automatic at column 81
;
no code is transmitted
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CR time
.0.80 seconds (OFF LINE)
0.86 seconds <ON LINE)
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LF time.. .0.05 seconds (single step)
0.03 seconds (continuous step)
Acoustic Coupler
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Compatibility Bell System 103A (equivalent)
Telephone (CAT No. 43-301)
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Mode. Oriainate
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Modulation. Frequency shift keying (FSK)
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Receive Frequencies. Originate
Mark 2225 Hz
Space 2025 Hz
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Transmitter Frequencies. Originate
Mark 1270 Hz
Space 1070 Hz