AC4486-5M Laird Technologies, AC4486-5M Datasheet - Page 46

• 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
Sub Hop Adjust
RF Packet Size
CTS On
CTS On Hysteresis
5.2.9 One Beacon Mode
The beacon, which is sent by the Server and contains system timing information, takes approximately
1ms to send. Enabling One Beacon mode causes the beacon to only be sent once per complete hop
cycle. Because the AC4486 is single frequency, the beacon is not required for the Client to locate the
Server. Therefore, One Beacon mode is enabled by default to minimize the amount of time spent
sending beacons.
Range Refresh – The Server sends out timing beacons at regular intervals to maintain Client
synchronization. Upon hearing a beacon, a Client will be in range of the Server and will assert its
IN_RANGE pin Low. Each time the Client hears a Server beacon, it resets the Range Refresh timer. If
the timer ever expires the Client will be out of range, will take the IN_RANGE pin High and will enter
acquisition mode trying to find the Server again. Therefore, Range Refresh specifies the maximum
amount of time a Client can go without hearing a Server beacon. This variable is particularly useful
when operating on fringe coverage areas. The Range Refresh timer is equal to 320ms * the value of
Range Refresh. Note: Range Refresh should not be set to 0h.
6
01/21/05
Parameter (those not
protocol parameters)
N/A: This parameter is not affected by Auto Config and the EEPROM value is used instead.
undocumented
named are
Address
EEPROM
3Dh
45h
Address
Table 12 – One Beacon Mode Settings
5D
4E
5B
5C
5E
5F
36
47
48
53
54
Table 11 – Auto Config Parameters
One Beacon Enabled One Beacon Disabled
Default Stream Mode
AC
D2
0E
66
90
09
80
07
46
23
08
Set bit 7
FFh
N/A
BE
A0
0E
C0
90
08
07
90
10
08
6
Mode Disabled
One Beacon
Clear bit 7
Acknowledge Mode
DC
A0
0E
B0
90
09
80
07
50
23
08
18h
Mode Enabled
One Beacon
DC
A0
0E
B0
90
09
80
07
68
23
08
46