Instructions

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4.3.5 Possible communications disturbances
Possible communication disturbances include the following:
 Noise can be caused by electronic devices and radio transmitters.
 Path-loss occurs as the strength of the received signal steadily decreases in proportion to the distance
from the transmitter.
 Shadowing is a form of environmental attenuation of radio signals caused by hills, buildings, trees or even
vehicles. This can be a particular problem inside buildings, especially if the walls are thick and reinforced.
 Multi-path fading is a sudden decrease or increase in the signal strength. This is the result of interference
caused when direct and reflected signals reach the antenna simultaneously. Surfaces such as buildings,
streets, vehicles, etc., can reflect signals.
 Hand-over occurs as you move from one cell to another in the GSM network. Your mobile application call
is transferred from one cell to the next. Hand-over can briefly interfere with communication and may
cause a delay, or at worst, a disruption.
4.4 Additional Software Configuration
4.4.1 Activating / Deactivating Antenna Diversity in the Terminal
Antenna diversity is an HSPA+ feature which allows the terminal to receive data streams through two separate
antennas. This feature should be de-activated, since the HT910-G terminal supports only one antenna. Please
use the following commands to de-activate this feature:
What do you want to do
Send the AT command
Device Response
Check the current setting
at#rxdiv?
Antenna Diversity is de-activated
#RXDIV: 0,1
Antenna Diversity is activated
#RXDIV: 1,3
De-Activate Antenna Diversity
at#rxdiv=0,0
4.4.2 Activating / Deactivating 3G Mode
By default, 3G mode may be de-activated on the device. In order to enable to device to search for 3G
networks, please use the following commands to activate or de-activate this feature:
What do you want to do
Send the AT command
Device Response
Check the current setting
at+ws46?
2G Only mode is activated
+WS46: 12
3G Only mode is activated
+WS46: 22
2G / 3G mode is activated
+WS46: 25
Activate 3G Mode
at+ws46=25