PACSystems VersaMax Genius Network Interface User Manual Section 2
GFK-1535D Jan 2023
Installation 34
2.9.1 Selecting a Baud Rate
•
All devices on a bus must use the same baud rate.
•
If the cable length is between 4500 and 7500 feet, you must select
38.4 Kbaud. This data rate only supports a maximum of 16 devices on
the bus.
•
If the cable length is between 3500 and 4500 feet, select 76.8 Kbaud.
•
If cable length is between 2000 and 3500 feet, select 153.6 Kbaud
extended.
•
If the cable length is less than 2000 feet, either 153.6 Kbaud standard
or 153.6 Kbaud extended can be used. 153.6 Kbaud extended is
recommended, especially if the system will include a dual bus. In
noisy environments, 153.6 Kbaud extended provides improved noise
immunity with little effect on bus scan time.
•
The selection of an appropriate baud rate for the system may also be
determined by the type of cable used. For more information, see
Selecting a Cable Type.
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