MDEV-900-NT Linx Technologies, MDEV-900-NT Datasheet - Page 13

• Manufacturer Part Number: MDEV-900-NT
• Description: RF Development Tools NT Series Dev kit w/ Transparent module
• Manufacturer: Linx Technologies
• Type: RF Transceiversr

Specifications of MDEV-900-NT

• Rohs: yes
• Product: Development Kits
• Tool Is For Evaluation Of: TRM-900-NT
• Frequency: 902 MHz to 928 MHz
• Operating Supply Voltage: 2.5 V to 5.5 V
• Interface Type: USB
• Factory Pack Quantity: 1

To achieve maximum range, keep objects such as your hand away
from the antennas and ensure that the antennas on the boards have
an unobstructed line-of-sight path to each other. Range performance is
determined by many interdependent factors. If the range you are able to
achieve is significantly less than specified by Linx for the products you are
testing, then there is likely a problem with either the board or the ambient
RF environment in which the board is operating. First, check the battery,
switch positions, TX output power setting and antenna connection.
Check the range performance on different channels. Next, measure the
receiver’s RSSI voltage with the transmitter turned off to determine if
ambient interference is present. If this fails to resolve the issue, please
contact Linx technical support.
The PC Control Area
The PC Control Area is used with a daughter board to connect the
module’s Command Data Interface to a PC. This advanced feature is a
serial data interface for configuration and data transfer. One USB interface
board is included with the development kit. Additional USB interface boards
or an RS-232 interface board can be purchased separately.
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Figure 10: PC Interface Boards
The top DIP switch (1) controls the TRPT/PKT line on the module. This
line selects between transparent data transmission and packet data
transmission. Slide it to the left for transparent data and to the right for
packet data.
The bottom DIP switch (1) controls the CMD_DATA_BAUD line on
the module. This is the data rate for the CDI and has no effect on the
over-the-air data rate. Slide to the left for 57,600bps and to the right for
9,600bps.
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