Install SIM cards in the Plug-in LTE modem

There is a label on the bottom of the CORE modem that indicates the plug-in modem IMEI number. The modem is referred to as 1002-CM.

To install SIM cards:

  1. Identify the SIM 1 and SIM 2 slots on the CORE modem. If using only one SIM card, insert it into SIM 1. A second SIM may be inserted into slot SIM 2 for an alternate wireless carrier.

  2. For high-vibration environments, apply a thin layer of dielectric grease to the SIM contacts.

    Note If the IX20 device is used in an environment with high vibration levels, SIM card contact fretting may cause unexpected SIM card failures. To protect the SIM cards, Digi strongly recommends that you apply a thin layer of dielectric grease to the SIM contacts prior to installing the SIM cards. See Apply Dielectric Grease over SIM Contacts for instructions.

  3. Insert the SIM cards into the CORE modem.

  4. On the IX20 back panel, remove the CORE modem cover by loosening the cover plate thumb screw and removing the cover plate.

  5. With the antennas SMA connectors pointing outward, slide the CORE modem into the IX20 device. A clicking sound will indicate it is properly inserted.

  6. Secure the CORE modem with the supplied anchor screw. Use either a Philips #0 or a Torx T10 driver. Torque screw to 2 in lbs (225 mN m) maximum.
  7. Cover the installed Digi1002-CM unit with the CORE modem cover and secure the coverplate by tightening the thumb screw.

  8. Affix the cellular antennas to the two connectors protruding from the device.

Apply Dielectric Grease over SIM Contacts

Note Digi recommends using either the Loctite® LB 8423 Dielectric Grease or Synco Lube® Silicone Dielectric Grease.

  1. Use a sheet of paper or cardboard over the area where you intend to work.

  2. Use isopropyl alcohol and a cotton-tipped applicator to gently clean the SIM contacts. Using isopropyl alcohol requires a well vented environment. Demineralized water can also be used as an alternative.

  3. Once the surface is clean and dry, apply a small amount of dielectric grease in a thin layer over the contacts. Use a new cotton-tipped applicator to work the grease smoothy over the contacts. Apply gentle pressure.

  4. When the dielectric grease has been applied, insert the SIM into the SIM slot as described above.

To remove the CORE modem:

  1. Remove the anchor screw.
  2. Pinch the two vertical sides of the white clip.

  3. Slide the CORE modem out of the IX20 device.