Test The Connection; Cellular (Tx/Rx) Led Indicator; Signal Strength - Campbell CR300 Series Getting Started Manual

Compact datalogger

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3.2.1.3 Test the connection

Use the Connect screen to test the connection. Click on the appropriate station and click

Connect to initiate a call to the data logger. The data logger must have 12 V power.

TIP:

The connection time is subject to many external factors. It is often less than 30 seconds but

could be up to 15 minutes. Be patient.

If the connection is successful, the connectors at the bottom of the screen will come together and

clock information from the data logger will be displayed in the Station Date/Time field. If the

connection fails, a Communications Failure message will be displayed.

When the data logger is powered, the cellular LED will turn on according to cellular modem

communications states:

Off: Cellular modem off, insufficient power, or failure to establish a connection with the

provider (periodic retries will occur).

Solid: Cellular modem is powering up and attempting to establish a connection with a

provider.

Quick Flashing (approximately 1 second duration): Indicates successful network

registration.

Flashing: Flashes with network activity.

Signal strength may indicate the quality of connection to a cellular tower. For 3G networks, this is

reported as RSSl (Received Signal Strength Indicator). For 4G, it is RSRP (Reference Signal

Received Power).

Signal strength units are –dBm; –70 is a stronger signal than –100.

3. Cellular communications option

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