XBP09-DPUIT-156 Digi International, XBP09-DPUIT-156 Datasheet - Page 19

• Manufacturer Part Number: XBP09-DPUIT-156
• Description: MODULE XBEE PRO W/U.FL
• Manufacturer: Digi International
• Series: XBEE-PRO™r

Specifications of XBP09-DPUIT-156

• Frequency: 902MHz ~ 928MHz
• Data Rate - Maximum: 156kbps
• Modulation Or Protocol: FHSS
• Applications: ISM
• Power - Output: 17dBm (50mW)
• Sensitivity: -100dBm
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Receiving: 80mA
• Current - Transmitting: 210mA
• Data Interface: PCB, Through Hole
• Antenna Connector: U.FL
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 602-1168

XBee‐PRO® 900 RF Modules
A pushbutton and an LED can be connected to module pins 20 and 15 respectively to
support the commissioning pushbutton and associated LED functionalities.
Network Discovery
Commissioning Pushbutton and Associate LED
The DB value can be determined in hardware using the RSSI/PWM module pin (pin 6). If the RSSI
PWM functionality is enabled (P0 command), when the module receives data, the RSSI PWM is set
to a value based on the RSSI of the received packet. (Again, this value only indicates the quality of
the last hop.) This pin could potentially be connected to an LED to indicate if the link is stable or
not. XBee-PRO 900 modules also have the limitation that only RSSI values near the sensitivity
level of the radio are accurately reported. Signals received which are stronger than approximately
-85 dBm will be reported as approximately -85dBm.
The network discovery command can be used to discover all Digi modules that have joined a
network. Issuing the ND command sends a broadcast node discovery command throughout the
network. All devices that receive the command will send a response that includes the device’s
addressing information, node identifier string (see NI command), and other relevant information.
This command is useful for generating a list of all module addresses in a network.
When a device receives the node discovery command, it waits a random time before sending its
own response. The maximum time delay is set on the ND sender with the NT command. The ND
originator includes its NT setting in the transmission to provide a delay window for all devices in
the network. Large networks may need to increase NT to improve network discovery reliability.
The default NT value is 0x82 (13 seconds).
The XBee modules support a set of commissioning and LED behaviors to aid in device deployment
and commissioning. These include the commissioning push button definitions and associate LED
behaviors. These features can be supported in hardware as shown below.
Commissioning Pushbutton and Associate LED Functionalities
© 2009 Digi International, Inc.
XBee
20
15
Push button
R
Associate
LED
19