551 300 02

 

PD 664 LED indicators

A PD 664 GPRS device is equipped with 3 LED indicators, “Error” (red), “On” (green), and (green) “Link”. The state of the device is indicated by the LEDs, according to the scheme shown in the table.

 

Meaning

Error (Red)

On (Green)

Link (Green)

No power

OFF

OFF

OFF

Initialising

OFF

ON

OFF

GPRS Connection, no traffic

OFF

ON

ON

GPRS Connection, traffic

OFF

ON

Flashing

Error (RAM, FLASH, EEPROM,  module) or P-NET sync error, Watchdog Error

ON

ON

ON, OFF, or Flashing

No SIM card detected or no valid GPRS configuration

Flashing

ON

OFF

 

 

 

 

 

If the Error LED is ON, the cause can be found by reading the ChError.Act bits 8-12 in the Service, GPRS and SMS Channels.