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uPASS Reach | quick reference guide
LED indications
A number of LED's indicate the current status of the uPASS Reach reader.
The table below describes the function of each LED.
Led
Description
LED bar indicating the received tag signal strength. This LED bar may also
indicate the presence of radio interference. In case of interference, try
RX
switching to a different frequency.
LEVEL
Read Disable LED. On while reading disabled.
RDIS
Input 1 status. On when input 1 contact is closed.
IN1
Transmit serial data.
TXD
Receive serial data.
RXD
TRANSIT compatible processor ID LED. Blinks when a tag is identified.
ID
TRANSIT compatible processor status LED.
STS
Squelch active. When squelch is enabled and the transponder return
SQ-ACT
signal below threshold level.
Power supply voltage too high.
DC-HI
Power supply voltage too low.
DC-LO
DC-FAIL
Internal supply voltage failure.
Temperature critically high.
T-CRIT
PLL unlocked. Error indication only. No direct hardware action
PLL UL
implemented.
UHF processor status LED. Should be slowly blinking. On when bootloader
USTS
invoked.
Tag found. RN16 received.
UTAG
Tag data read complete. On when bootloader invoked.
UREAD
Error during tag identification.
UERR
RESET
TEST
6/6
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