Connect Tech Blue Heat/Net Sync User Manual
Figure 32: Typical Asynchronous Date Frame
Serial Line Interface Tutorial
RS-232 Line Interface:
232.The
15V for a logic 1 or Mark. The Blue Heat/Net Sync has
Baud rate: The higher the baud rate, the shorter the cable length must be.
Cable quality: Quality largely refers to the capacitance of the cable. A higher capacitance (usually specified as pF or pico Farads per foot) dictates a lower baud rate, and a shorter maximum length. Low capacitance computer cables for
You can usually operate with cable lengths of up to 100 feet (30 m) at baud rates up to 115.2 Kbps using low capacitance cable. For higher baud rates such as 230.4 Kbps and up, we recommend keeping the cable lengths to within 25 feet (7.6 m).
The TIA/EIA232 specification specifies two connectors: the
Differential Line Interfaces:
The Blue Heat/Net Sync features Sipex SP508
V.11: A differential line interface with signal levels compatible with
V.10: A single ended line interface that can be wired such that it will have some of the noise cancelling features of RS485 (V.11). This interface is also called
V.35: A differential line interface that operates in a current loop. The electrical levels are about +/- 550mV.
RS485/RS422/V.11 Details
V.11,
72 | Revision 0.03 |