User's Guide

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Binsfeld Engineering Inc. | 231-334-4383 www.binsfeld.com 869610-9_A2 Pg. 9
2.1.2.2 RF Receive Data (RXD) LED
The green RXD Data LED is retriggered ON for 20msec when a byte is
received by the RF transceiver of the RX20K. If the 20msec ON duration
expires before another byte is received, the RXD Data LED switches
OFF until another byte is received.
2.1.2.3 USB Data LED
The green USB Data LED turns ON at the start of a USB Data
transmission from the RX20K to the host PC. The LED remains ON for
20msec after the transmission completes and then turns OFF unless
another transmission begins before the 20msec OFF delay expires.
2.1.2.4 RPM LED
The green RPM LED is triggered ON every time the leading edge of a
speed pulse is detected. After a 20msec duration the RPM LED
switches OFF again unless another speed pulse extends the ON time
another 20msec.
2.2 TX20 Transmitter
The TX20K transmitter is encased in a small, rugged, potted plastic
housing with a six position screw terminal block for external connections.
It also features a single green Status Indicator LED next to its terminal
block.
2.2.1 External Connections
A small six position terminal block provides external connections for
power and strain gauge connections. Because of their small size the
screw terminals can be damaged if too much force is applied. Always
use an appropriately sized small screwdriver and do not over-tighten.
Starting next to the LED indicator the connections are:
+ Transmitter Power
- Transmitter Power
+ Bridge Excitation
+ Bridge Sense
- Bridge Sense
- Bridge Excitation