101-0546 Rabbit Semiconductor, 101-0546 Datasheet - Page 31
101-0546
Manufacturer Part Number
101-0546
Description
COMPUTER SNGL BD BL2130 BOTT MNT
Manufacturer
Rabbit Semiconductor
Datasheet
1.101-0464.pdf
(134 pages)
Specifications of 101-0546
Module/board Type
Single Board Computer Module
For Use With/related Products
BL2130
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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The BL2100 comes with a 220 termination resistor and two 681 bias resistors installed
and enabled with jumpers across pins 1–2 and 5–6 on header JP1, as shown in Figure 14.
For best performance, the bias and termination resistors in a multidrop network should
only be enabled on both end nodes of the network. Disable the termination and bias resis-
tors on any intervening BL2100 units in the network by removing both jumpers from
header JP1.
User’s Manual
TIP: Save the jumpers for possible future use by “parking” them across pins 1–3 and 4–6
of header JP1. Pins 3 and 4 are not otherwise connected to the BL2100.
Figure 14. RS-485 Termination and Bias Resistors
W
W
W
25
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