Trio Datacom Pty Ltd EB450-XXF01 Manual Do Utilizador

  Page 32

E Series Data Radio – User Manual

© Copyright 2005 Trio DataCom Pty. Ltd. 

Bar Graph Indicators

The bar graph indicators on the front panel provide variable 

information regarding the performance of the Base Station. To 

enable / disable the bar graph display depress the Display ON / 

OFF button. The display will turn off automatically after 5 minutes.

DC Supply:

Indicates the supply input voltage at the exciter module. Typically 

13.8Vdc.
Indication: <10Vdc no LED’s on, 10-10.9Vdc LED’s RED, 11-

15.6Vdc All LED’s GREEN, >=15.7Vdc last LED RED.

Tx Power:

Indicates forward RF power output as measured at the TX antenna 

port. Typically +37dBm.
Indication: <20dBm no LED’s on, 20-40.6dBm (11.5W) LED’s 

GREEN, >=40.7dBm last LED RED.

Tx Drive:

Indicates exciter drive level. Typically +20dBm.
Indication: <10dBm no LED’s on, 10.0-25.9dBm LED’s GREEN, 

>=26.0dBm last LED RED.

Rx Sig:

Indicates receive signal strength. Typically -85 to -65dBm.
Indication: <-120dBm no LED’s on, -120 to -110.1dBm LED’s RED, 

>=-110dBm LED’s GREEN.

RxFreq. Offset:

Indicates offset of receiver AFC - useful in determining frequency 

drift. Typically 0kHz.
Indication: Single GREEN LED to indicate current value, <-3.6kHz 

or >+3.6kHz LED is RED. No signal, all LED’s OFF.  

Part E –  Getting Started - EB450

Test Mode

The Bar Graph indicators have a Test Mode, which cycles all LED’s 

for correct operation (before returning to their normal operation). 

To activate this mode, simply depress the ON / OFF button while 

applying power to the unit.

Hardware Error

A hardware error is indicated on the status LEDs by all 

LEDs flashing RED at a rate of 1Hz. This indicates internal 

communications to the exciter inside the basestation has been lost 

and the base station needs to be returned to repair.

Received Signal Indicator

The “RX/SYNC” LED  indicates the state of the receiver.  
If the LED is off, no signal is being received.
A RED indication shows that an RF carrier is being received, but 

no data stream can be decoded. This will briefly happen at the 

very start of every valid received transmission or may indicate the 

presence of interference, or another user on the channel.
A continuous GREEN indication shows that the modem is locked 

and synchronised to the incoming signal, and has excellent Bit 

Error Rate (BER). Any losses of synchronisation (BER errors) are 

shown as a visible RED flicker of the LED. 
Note: This might only be apparent on a PTMP slave when only 

Data Flow “breakout” LEDs

There are also two LEDs to indicate data flow into and out of the 

two user ports.
Input data to be transmitted is shown as a RED flash, and received 

data to be output to the port is shown as a GREEN flash.
If data is alternately flowing in and out quickly, then the indicator 

appears Orange.

LED Indicators & Test outputs

Radio is Powered

If all the LEDs are off, no power is reaching the radio modem.
Successful power-up is indicated by the “PWR” LED indicating a 

continuous (healthy) GREEN state. Note that this LED is turned 

RED when the transmitter is active.