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Hardware setup
Install SIM cards
To install SIM cards:
1. On the TX40 front panel, use a screwdriver to remove the SIM slot cover.
2. For high-vibration environments, SIM card contact fretting may cause unexpected SIM card
failures. To help avoid this, apply a thin layer of dielectric grease to the SIM contacts. See
Dielectric Grease over SIM Contacts
3. Remove the SIM tray(s) from the TX40.
4. Fit the 4FF SIM into the tray. Insert the end of each SIM card with the chamfered corner first
and the SIM contacts facing upwards.
5. Re-insert tray into the TX40.
6. After all SIM cards are in place, replace the SIM slot cover.
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.
Tips for improving cellular signal strength
If the signal strength LEDs or the signal quality for your device indicate Poor or No service, try the
following things to improve signal strength:
n
Move the device to another location.
n
Try connecting a different set of antennas, if available.
Connect data cables
The TX40 supports two types of data ports:
TX40 User Guide
for instructions.
Install SIM cards
Apply
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