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J-Series Data Radio – User Manual
Analog RSSI Output Characteristics - E Series Data Radio
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
-120
-110
-100
-90
-80
-70
-60
-50
-40
RF Level (dBm)
R
SSI
(D
C
Vo
lts
)
Optimizing the Antenna for Rx Signal
When using a directional antenna, it will be necessary to align
the antenna for the best received signal. This can be done using
TVIEW+ Diagnostics (measured RSSI) or by measuring the RSSI
output on Pin 9 of the serial data port.
This can be done by using the (0-5Vdc) output on Pin 9 of the
Data Port to indicate signal strength (RSSI). This voltage can be
converted to dBm using the chart below.
The RSSI output is a latched value of the received signal which is
updated every 100mS but will peak-hold for about 4 seconds if the
Remote has lost synchronization with the Access Point.
Part H – Installation & Commissioning
Chart is approximate only.
Access Point: RSSI voltage is only present if it is receiving valid
data from down stream.
Bridge: Only looks at the upstream received signal. If you need to
measure downstream RSSI you would need to temporarily convert
it to an access point talking to the remote with the remote sending
data back.
Remotes: RSSI voltage is only present if unit is in sync with the
Access Point or Bridge.
