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21
6.4. Hardware
Specifications
Table 6.2
Block Item
Specification
Remark
Protocol
Original Ir Interface (IrDA device)
IR comm.
only by
contact.
Synchronization Start/Stop
bit
Method Half
duplex
Data bit : 8
Stop bit : 1
Data format
Parity bit : none
Fixed
Baud rate (bps)
2400, 9600, 19.2K, 38.4K, 57.6K, 115.2K
Mark : LED off
I/F level
Space: LED on (pulse width 1.6 usec.approx)
Pulse width
of ON is
fixed
irrespective
of
communicati
on speed.
I/F to
DT-930
Usage Connecting
DT-930
Protocol RS-232C
Synchronization Start/Stop
bit
Method Half
duplex
Data length : 8 bits
Stop bit : 1
Data format
Parity bit : none
Baud rate (bps)
2400, 9600, 19.2K, 38.4K, 57.6K, 115.2K
Mark -15 to –5V
SD
Space +15 to 5 V
Mark -3 V or less
I/F level
RD
Space +3 V or more
Pin number and signal
Pin 1
FG
Pin 2
Not used
Pin 3
SD
Pin 4
Not used
Pin 5
RD
Pin 6
Not used
Pin 7
RS
Pin 8
ER
Pin 9
Not used
Pin 10
Not used
Pin 11
Not used
Pin 12
Not used
Connector
Pin 13
CD
Pin 14
SG
14-pin
female
I/F
I/F to
Host PC
Usage
P/C, Modem, Printer, etc.
Protocol RS-485
Max.
length
is 1 Km.
Synchronization Start/Stop
bit
Method Half
duplex
Data bit : 8
Stop bit : 1
Data format
Parity bit : none
Fixed
I/F Chained
Connect.
I/F
Baud rate (bps)
2400, 9600, 19.2K, 38.4K, 57.6K, 115.2K
Continued.
13
1
14 2
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