Instructions

CEP AG may refuse warranty claims where evidence of product misuse is found.

3.7 SIM card precautions

Before handling the SIM card in your application, ensure that you are not charged with static electricity. Use

proper precautions to avoid electrostatic discharges.

When the SIM card hatch is opened, the SIM card connectors lie exposed under the SIM card holder.

Caution! Do not touch these connectors! If you do, you may release an electrical discharge that could damage

the modem or the SIM card.

When designing your application, the SIM card’s accessibility should be taken into account. We always

recommend that you have the SIM card protected by a PIN code. This will ensure that the SIM card cannot be

used by an unauthorized person.

3.8 Antenna precautions

If the antenna is to be mounted outside, consider the risk of lightning. Follow the instructions provided by the

antenna manufacturer.

 Never connect more than one modem to a single antenna. The modem can be damaged by radio

frequency energy from the transmitter of another modem.

 Like any mobile station, the antenna of the modem emits radio frequency energy. To avoid EMI

(electromagnetic interference), you must determine whether the application itself, or equipment in the

application’s proximity, needs further protection against radio emission and the disturbances it might

cause. Protection is secured either by shielding the surrounding electronics or by moving the antenna

away from the electronics and the external signals cable.

 The modem and antenna may be damaged if either come into contact with ground potentials other than

the one in your application. Beware, ground potential are not always what they appear to be.

4 Installation of the modem

This chapter gives you advice and helpful hints on how to integrate the HT910 Terminal into your application

from a hardware perspective. Please read the information given in “Safety and Product Care”, page 10 and

then read the information in this section before starting your integration work.

4.1 Where to install the modem

There are several conditions which need to be taken into consideration when designing your application as

they might affect the modem and its function. They are:

4.1.1 Environmental conditions

The modem must be installed so that the environmental conditions stated in the Technical Data chapter, such

as temperature, humidity and vibration are satisfied. Additionally, the electrical specifications in the Technical

Data section must not be exceeded.