User's Manual

Configuration
Crescendo VHF Half-Duplex User Manual Page 14 of 74
Table 3: Front panel RSSI, transmit power, and temperature modes
3.5.2 Main Serial Port Status (Mode 5)
LED
Description
(1) DCD
Green when the DCD output is low, red when it is high.
(2) DTR
Green when the DTR input is low, red when it is high.
(3) Tx Serial Data
Flashes green when serial data is transmitted from the
Crescendo on either serial port.
(4) Rx Serial Data
Flashes green when serial data is received by the
Crescendo on either serial port.
Flashes red when a receive error occurs on either serial
port. See section 4.4 on page 19 for serial statistics.
(5) RTS
Green when the RTS input is low, red when it is high.
(6) CTS
Green when the CTS output is low, red when it is high.
Table 4: Mode 5 LED functions
3.5.3 Radio Status LEDs (Mode 1)
LED
Description
(1) Tx RF Data
Flashes green when RF data is transmitted.
Flashes red when an RF user or Tx Sync packet is discarded due to retries
being exhausted.
(2) Rx RF Data
Flashes green when RF data is received.
Flashes red when a received RF packet is discarded.
(3) Tx Serial Data
Flashes green when serial data is transmitted from the Crescendo on either
serial port. Flashes red with Rx RF Data when a RF packet is discarded
due to a Tx Serial buffer overrun.
(4) Rx Serial Data
Flashes green when serial data is received on either serial port.
Flashes red when a receive error occurs on either serial port. See section
4.4 on page 19 for serial statistics.
(5) Online
Solid green if packets addressed to the unit has been received. The
duration the LED stays green is set by the Online Timeout.
Solid green when a connection is established with a remote radio.
Flashes red when a point-to-point link goes from the connected to not
connected state.
(6) Power / Fault
Flashes green when the radio is operating normally.
Flashes red when a fault has occurred. Faults are displayed in Cruise