AC4486-5M Laird Technologies, AC4486-5M Datasheet - Page 33

• Manufacturer Part Number: AC4486-5M
• Description: TXRX 868MHZ 3V TTL 5MW RS232
• Manufacturer: Laird Technologies
• Series: AeroCommr

Specifications of AC4486-5M

• Frequency: 868MHz
• Data Rate - Maximum: 115.2kbps
• Modulation Or Protocol: FSK
• Applications: AMR, Gaming Devices, Inventory Tracking
• Power - Output: 5mW
• Sensitivity: -100dBm
• Voltage - Supply: 3.3V
• Current - Receiving: 30mA
• Current - Transmitting: 40mA
• Data Interface: Connector, 2 x 10 Header
• Antenna Connector: MMCX
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Board Size: 49 mm x 42 mm x 5 mm
• Output Power: 5 mW
• Antenna: External MMCX Connector
• Frequency Rf: 869.65MHz
• Transmit Power: 5mW
• Interface Type: Serial
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

AC4486 Specifications
4.6.18 Report Last Valid RSSI
As RSSI values are only valid when the local transceiver is receiving a RF packet from a remote
transceiver, instantaneous RSSI can be very tricky to use. Therefore, the transceiver stores the most
recent valid RSSI value. The Host issues this command to request that value. Note: This value will
default to FFh on a Client and 00h on a Server if no valid RSSI measurement has been made since
power-up. The Host issues this command to read the last valid RSSI:
Host Command:
Transceiver Response:
01/21/05
Byte 1 = CCh
Byte 2 = 22h
Byte 1 = CCh
Byte 2 = Data1
Where:
Data1 = Most significant 8 bits of last valid RSSI reading.
Note: Notice the trend between -9dBm and 7dBm does not follow the curve. This is because
the RSSI becomes saturated at signal levels above -40dBm.
Signal Strength
-15 to -10
-45 to -16
-57 to -46
-62 to -58
-64 to -63
-65 to -67
-72 to -68
-88 to -72
-95 to -89
(dBm)
-9 to 2
3 to 7
Last Good RSSI
Value (hex)
C0
E0
F0
20
10
10
20
40
60
80
0
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