MNZB-DKC-900 MeshNetics, MNZB-DKC-900 Datasheet - Page 26

• Manufacturer Part Number: MNZB-DKC-900
• Description: KIT DEV ZIGBIT 900 COMPLETE 1YR
• Manufacturer: MeshNetics
• Type: 802.15.4/Zigbeer

Specifications of MNZB-DKC-900

• Frequency: 868MHz, 915MHz
• For Use With/related Products: MNZB-900-B0
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 758-1009

© 2008 MeshNetics
3.5. Powering the Boards
3.6. Testing WSN Functionality Using SerialNet
The boards can be powered by a pair of AA-size batteries, via the USB port, once
connected for data transfer, or via AC/DC adaptor. The nominal voltage is 3 V. Using
AC/DC adaptor disconnects AA batteries automatically. Using USB port disconnects the
AC/DC adaptor.
In order to make accurate measurements of sensor parameters, battery power is
recommended. USB power is not stable enough, which can affect transmission of power
level or RF parameters.
IMPORTANT NOTES:
It is strongly recommended to check up the power supply voltage before programming the
boards by Serial Bootloader or by JTAG. Power drops happened during the programming
process could result in an inoperable state of the ZigBit 900 or its permanent damage.
Using the discharged batteries (when the voltage is below the specified limit) may cause
damage of flash memory or EEPROM as well. If that happened, programming by means
of Serial Bootloader would fail. In this case the only option becoming available would be
using of JTAG emulator (see Appendix B).
Using nickel-cadmium rechargeable batteries is allowed but with certain precautions.
Nominally, their cell potential is 1.2 V. Although a pair gives 2.4 V thus fitting the operating
voltage range (see Section 2.1), it is still lower than 3 V level, which a pair of the most
popular alkaline cells give. Hence, nickel-cadmium rechargeable batteries could not be a
proper alternative of the alkaline cells for all applications.
Program the boards with the SerialNet firmware (see Section 5).
Connect the board to PC (see Section 3.4).
Run standard Hyper Terminal utility which is a part of Windows 2000/XP:
Start/Programs/Accessories/Communications/HyperTerminal.
Select logical value for COM port provided by the system (see Section 3.4). COM port
parameters should be set to the values given in Table 11.
Table 11. COM port settings for hardware testing
Option
Data Rate
Data Bits
Parity
Stop Bits
Flow Control
Type the “AT” command and press Enter key.
The board responds to Hyper Terminal with “OK“.
Now, a user can play various networking scenarios by sending AT commands fully
described in [3].
Z I G B I T ™ 9 0 0 D E V E L O P M E N T K I T 1 . 3
Value
38 400 bps
8
None
1
None, unless data transmission between
the boards is planned; then, Hardware flow
control option should be selected
U S E R ’ S G U I D E
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