Accelaterm
®
Installation and Service Manual
28
LED Diagnostics
The Accelaterm circuit board uses LED's to indicate the presence of a particular voltage and EIA/TIA-232 signals. Figure 20
shows the LED position on the Accelaterm circuit board and the individual LED functions.
LED DIAGNOSTICS
Marking
Function
Notes
PWR
Logic Power
12 Volt power and 5 Volt Regulator okay
OK
Processor running okay
"Heartbeat" blink signals processor, memory, etc. running
RST
Reset Indicator
Red during reset; steady blink indicates processor failure
12 LOW
12 Volt Power Input low
Unit will soon shut down when on battery power (yellow)
TST
Test
Controlled by test firmware during development
ETH RX
Ethernet Receive Data
Ethernet Port is receiving data from the Host Computer
ETH TX
Ethernet Transmit Data
Ethernet Port is transmitting data to the Host Computer
RPT RX
Repeater Receive Data
'485 Repeater Port is receiving data from the Host Computer
RPT TX
Repeater Transmit Data
'485 Repeater Port is transmitting data to the Host Computer
5V (Left)
5 Volt Accessory Power
Power Status monitored separately on each side
5V (Right)
5 Volt Accessory Power
Power Status monitored separately on each side
Table 14 - LED Diagnostic Functions
5V
5 Volt DC Output from board, for
5 Volt Readers or Accessories.
Each side has separate Fault Protection
5V
5 Volt DC Output from board, for
5 Volt Readers or Accessories.
Each side has separate Fault Protection
Figure 20 - LED Diagnostic Functions
