Communications Specifications; Synchronization - Symbol PDT 1100 Product Reference Manual

Bar Code Type
Code 39
Code 93
Code 128

Communications Specifications

Table A-4 lists the communications specifications for the PDT 1100 and a host computer
via the CRD 1100 (optical interface) or direct-connect interface cable.
Communications Port

Synchronization

Transmission Speed
Character Length
Transmission Bit Order
Response Method
Vertical Parity
Transparency
Stop Bit Length
Synchronization
For accurate data transaction, synchronize the transmission between the sender and
receiver. To do this, define the bit order, position, the character length, and the beginning
and end of the character to be transmitted.
The start-stop synchronization is an asynchronous system which synchronizes each
character as a unit; that is, it externally adds start and stop bits to the leading and trailing
Table A-3. Bar Code Specifications (Continued)
Bar Dimensions
(PCS value ≥ 0.45)
0.15 mm min. (5.91 mils min.)
PCS value ≥ 0.9 Reflection
intensity difference between
white and black bars ≥ 80%
0.19 mm min. (7.48 mils min.)
Table A-4. Communication Specifications
Optical Interface
2400, 9600, 19200, 38400,
57600, or 115200 bps
Start-stop
8-bits
LSB (Least significant bit) first
ACK/NAK response
None
Transparent or non-transparent mode
1 bit
Specifications
Readable Magnification
Direct-connect Interface
300, 600, 1200, 2400, 4800,
9600, 19200, or 38400 bps
7- or 8-bits
Even, odd, or none
1 or 2 bits
A-5