AC4486-5A Laird Technologies, AC4486-5A Datasheet - Page 33
![TXRX 868MHZ 3V TTL 5MW RS232](/photos/14/21/142175/ac4486-5a_sml.jpg)
AC4486-5A
Manufacturer Part Number
AC4486-5A
Description
TXRX 868MHZ 3V TTL 5MW RS232
Manufacturer
Laird Technologies
Series
AeroCommr
Specifications of AC4486-5A
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
On-Board, Chip
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
33