User's Manual
Configuration
Crescendo UHF Half-Duplex User Manual Page 13 of 78
3.5 Front Panel Interface
The front panel interface allows for real-time monitoring of radio parameters without external equipment.
The front panel can also be used to enable the menu on the Crescendo’s auxiliary port regardless of the
current serial port configuration.
There are six front panel modes. To select a front panel mode, press the front panel button. The current panel
mode is shown by lighting a single red LED. To select another front panel mode, continue to hold the button
until the LED scrolls down to the appropriate mode, then release. The list of modes is shown in Table 3.
LED
Mode
Function
1
Radio Status
Section 3.5.1 on page 13 describes the functionality of the
LEDs when in radio status mode.
2
RSSI
Displays the current RSSI as a bar graph. Table 5 shows
the level for each bar item.
3
Transmit
Power
Displays the configured transmit power as a bar graph.
Table 5 shows the level for each bar item.
4
Temperature
Displays the internal temperature as a bar graph. Table 5
shows the level for each bar item.
5
Serial Port
Shows the main serial port status. The meaning of each
individual LED is shown in Table 6.
6
Configuration
Enables the terminal menu on the auxiliary port at 19200
8N1. The LED display is the same as mode 1.
Table 3: Front panel modes
3.5.1 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.