MDEV-900-NT Linx Technologies, MDEV-900-NT Datasheet - Page 9

• 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

The TX Power Select Switch
The board has a switch to select among three different transmitter output
power levels (Figure 5). The right position sets the module to full power of
about 12dBm. The center position sets the output power to about 0dBm,
which is the legal limit for most applications. The left position uses resistor
R37 to set the power. This position is an unpopulated 0603 size resistor
location. A resistor can be placed here to set the output power to any
available level. Please see the NT Series Data Guide for more information
on resistor values. A power cycle is required for changes to take effect.
Figure 5: The Development Board TX Power Select Switch
The Transceiver Area
The transceiver section consists of the transceiver module and a reverse-
polarity SMA connector as shown in Figure 6. The RP-SMA connector
is FCC compliant and reverses the center pin and socket. RP-SMA
connectors will mate with but not provide electrical connection to standard
SMA connectors or SMA equipped antennas. A header next to the module
disconnects the module’s power from the main board power. This can
be used for current measurements or to power the module alone from an
external power source. A jumper must be installed to power the module
from the board.
Figure 6: The Development Board Transceiver Area
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