LEDS on Protel’s New AVW Cellular Options

ASY0000225 For Standard Products

ASY0000261 With Encryption for Card Readers

There are four LEDS on the new Protel cellular options, and the following is a description of the LEDs and how they are used.

LED Description:

TX LEDFlashes when data is sent from AVW200 to ASY0000225/261.

RCV LEDFlashes when data is sent from ASY0000225/261 to AVW200.

Power LEDON when AC power is applied to ASY0000225/261. This LED will be OFF during battery operation to save power.

Status LEDIndicates the current status of the cellular modem. The states below are listed in the order they should occur when a new cellular modem option is installed. Once a cellular modem is installed and running, it should typically stay in State4.

State1:LED is Off. Cellular modem is shutdown. AVW200 needs to trigger the unit to "wake up" before communication can begin.

State2:LED is flashing at a rate of ½ second on & ½ second off. Cellular modem is active but not attached to GSM network.

State3:LED is flashing with a long pause and 1 quick flash. Cellular modem is active and attached to the GSM network.

State4:LED is flashing with a long pause and 2 quick flashes. Cellular modem is active, attached, and has an open internet socket. NOTE: This mode presently does not apply to the ASY0000225.

Normal First Communication Sequence:

1. Call to Host is initiated either by the AVW200 or manually via the pushbutton.

2. LED3 on the AVW200 comes ON (steady).

3. AVW200 will "discover" which modem type is attached. During this process, the AVW200 will activate the cellular modem placing the Status LED into State2 and configure the modem for operation (The TX & RCV LED should flash in quick succession).

4. After approximately 5 to 15 seconds, the Status LED should change to State3. If this state is achieved, several key items are working properly:

  • The communication/control lines between the AVW200 and the cellular modem are working properly.
  • The SIM card is installed and validated.
  • The cellular modem has at least one power source.
  • The cellular modem is registered on a local GSM tower.

5. Varies by assembly:

ASY0000225 - The status LED remains in State3 for this cellular modem.

ASY0000261 - After approximately 5 to 15 seconds, the Status LED should change from State3 to State4 indicating that the cellular modem has an open Internet socket.

6. Once a connection is established over the Internet from the AVW200 to IVS, LED3 on the AVW200 will start flashing on and off. LED3 will continue to flash until the communication is complete.

7. The TX LED and RCV LED should flash with approximately a 0.5 - 2s lapse between flashes. If LED3 on the AVW200 continues to flash and there is no activity on the TX & RCV LEDs of the cell modem, communications have most likely encountered an error and will have to retry. There may be up to a 45 second delay before the AVW200 abandons the communications when an error occurs.

Protel Inc.2/12/2008