Checking Signal Strength - Honeywell Lyric LCP300-L Installation And Reference Manual

Lyric Gateway Installation and Reference Guide
Installing the Gateway (Continued)
Communication Modules

Checking Signal Strength

When choosing a suitable mounting location, check the communications module's signal strength to
ensure proper operation. For most installations, using the module's internal antenna, mounting the
Lyric Gateway as high as practical, and avoiding large metal components provides adequate signal
strength for proper operation. To check signal strength, perform the following test.
Check Signal Strength
1. With the System in the Installer Programming mode,
select the "Comm. Diagnostics" button and then select
the "Cellular Information" button. The Cellular
Information will be displayed. The signal strength is
displayed (in dBm) as RSCP if the Lyric-3G module is
operating on the 3G Network or RSSI if the module
Lyric-3G module is operating on the 2G Network and for
the Lyric-CDMA module.
2. Compare the displayed RSCP or RSSI number to the
correct Signal Strength Guide at right to ensure
adequate signal strength. If necessary, relocate the
Controller to obtain better signal strength (select
"Cellular Information" again to refresh the reading).
3. If adequate signal strength cannot be achieved, External
Antenna Kit model Cell-ANTST should be used.
Lyric -3G Signal Strength
RSCP (3G)
Good .......................................... -20 to -90 dBm
OK ................................................ -91 to -100 dBm
Marginal ................................... -101 to -106 dBm
Bad ........................................... -107 to -120 dBm
RSSI (2G)
Good ........................................... -20 to -89 dBm
OK ................................................ -90 to -98 dBm
Marginal .................................. -99 to -104 dBm
Bad .......................................... -105 to -120 dBm
Lyric -CDMA Signal Strength
RSSI
Good ........................................... -20 to -90 dBm
OK ................................................ -91 to -100 dBm
Marginal ................................... -101 to -106 dBm
Bad .......................................... -107 to -120 dBm
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