CalAmp 200G Manual De Usuario
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CalAmp Proprietary & Confidential
3 Examples OK(Yellow) and Poor(Red) internal antenna placements
Figure 4 - Examples of Good (Green), OK(Yellow) and Poor (Red) Combination antenna placements
The received signal levels at the GPS antenna from the satellites are very low in power
(approximately -136 dBm), so any blockage of the antenna can affect the quality of the
location computed by the receiver.
5.2.2 Access to the SIM (Subscriber Identity Module) Card
When used in a GSM or iDEN network, each LMU uses a Subscriber Identity Module (SIM)
card, which should be inserted before you install the LMU for the first time. The SIM card is
attached to the main-board inside the housing of the LMU unit.
card, which should be inserted before you install the LMU for the first time. The SIM card is
attached to the main-board inside the housing of the LMU unit.