Trimble Inc. WCSNM941 Benutzerhandbuch

SNM941 Connected Site Gateway Installation Guide | 

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Many versions of the SNM941 device come with a Trimble-supplied SIM card. In some circumstances, 
such as needing a high data rate plan for a grade control system, you may need to replace this standard 
SIM card with another. This chapter details how to successfully replace the SIM card. Before changing 
the SIM card, contact your local Trimble SNM941 dealer to determine if a different SIM is necessary. 

Replacing the SIM card

The SIM card door is located at the back of the enclosure, away from the 34-pin connector. Ensure that 
the SIM pin number is entered into web interface, TB5x0, or CB4x0 before you replace the SIM.

1. When you replace the SIM card, ensure you are working in a dry and clean environment. 

2. Remove the power from the SNM941 device during this procedure. 

3. To reduce the chances of electrostatic discharge (ESD) damage, discharge the SNM941 enclosure to 

chassis ground before starting work. 

4. Remove the two screws from the SIM door and open the SIM door. 

5. Gently push the SIM card towards the front of the device. This will trigger a release which will eject 

the SIM card towards you.

DRAFT