Connecting GSM modem

The Didactum 500, 600 and 500 DC appliances all include the option to install a GSM modem (not included). The device is mounted and connected internally or inside the master unit. The GSM modem is needed when a network is absent or for reservation of a connection channel from the master unit to the internet for example; sending SMS notifications and SMS commands.

Installation GSM module

Installation of the GSM module:

Installation of the GSM module:
Carefully remove the three screws holding on the cover and remove it. The antenna, GSM or dry contact modules are installed inside. Carefully open the box by unplugging, if necessary, any cables that connect from the top cover to bottom cover.
Installation of the GSM module:
Connect the antenna cable to the modem board. Carefully connect the U-Fl antenna cable to the input U-FL connector and gently press it. If possible install the connector using a magnifying glass!
Installation of the GSM module:
Set up the GSM modem card on 3 steel spacing sleeves on the cover, attach the card to the sleeves using the three M3 screws supplied with the modem.
Installation of the GSM module:
Now attach the SMA connector antenna cable to the rear or to the front panel of the appliance through the corresponding SMA hole. Insert the SMA connector, gold-plated washer and nut from the supply. Holding the SMA connector with one key, securely tighten the nut with the other key. Do not tighten SMA connector with one key, or you can possibly break the cable and the connection will be lost!
Installation of the GSM module:
Next connect the 16-pin flat cable to the connectors on the modem card and on the appliance motherboard. Close and fasten the cover. If necessary, install the SIM card into the appropriate hole.
Installation of the GSM module:
Carefully place the top cover back so that all cover wings fit in and all cut off points match the panel holes. Then use the 3 screws to close the enclosure. When installing the green dry contact connectors, check if there are any burrs and remove them with rasp if nessassary.