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8-6
EB 9510 EN
Operation
8.3.2
Improving the signal quality
The signal strength can be indicated by the LEDs on the GSM module. Proceed as follows:
1.
Press the service key on the GSM module and hold for three seconds (see Fig. 8-4).
2. The LEDs indicate the signal strength as follows:
Reading
CSQ value
1)
Signal quality
Red LED
R
< 8 (< –96 dBm)
No signal
Red LED + 1x green LED
R
G
< 15 (< –82 dBm)
Poor quality
Red LED + 2x green LEDs
R
G
G
< 21 (< –70 dBm)
Fair quality
Red LED + 3x green LEDs
R
G
G
G
≥ 21 (≥ –70 dBm)
Good quality
1)
CSQ (Cell Signal Quality), parameter to indicate the signal strength (signal quality) in mobile
networks
Service key
Red LED
Green LEDs
Fig. 8-4:
Signal strength indication
Fig. 8-5:
Aligning the antenna
Aligning the antenna
Move the antenna to the upright position for the best reception results. If a weather guard or
other housing parts are located directly above the device due to the mounting situation, tilt
the antenna slightly (see Fig. 8-5).
Содержание Media 7 5007-1
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