Tandy 102 Service Manual page 14

I/O Interface
RS-232C
Conforms to EIA standard signal
Communications protocol
Word length
Parity
Stop bit length
Baud rate
Maximum transmission distance
Maximum driver output voltage
Minimum driver output voltage
Maximun receiver input voltage
Minimum receiver input vltage
MODEMICoupler
Conforms to BELL 103 Standard
Data length
Parity
Stop bit length
Baud rate
Full duplex
Transmit output level
Receive sensitivity
Other functions
Printer interface
Conforms to Centronics interface standards
Handshake signals
Audio cassette inte
rf
a ce
Data rate
Input level
Output level
Bar code reader inte
rf
a ce
Input level
TXR (Transmit Data)
RXR (Receive Data)
RTS (Request to Send)
CTS (Clear to Send)
DSR (Data Set Ready)
DTR (Data Terminal Ready)
6, 7, or 8 bits
NONE, EVEN or ODD
1 or 2 bits
75, 110, 300, 600, 1200, 2400,
4800, 9600 or 19200 BPS
5 meters
± 5 volts
± 3.5 volts
± 18 volts
± 3 volts
6, 7 or 8 bits
NONE, EVEN or ODD
1 or 2 bits
300 BPS
Answer mode/originate mode switchable
15 dBm ± 2dBm
-30 dBm
Hang-up function
Auto pulse dialing function
10/20 PPS
STROBE, BUSY, BUSY
1500 BPS
(Mark 2400 Hz, Space 1200 Hz)
0.8 to 5 volts (Peak to peak)
580 mV ± 10%
3.5 volts (Min.)-High
1.5 volts (Max.)-low