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Multi Channel UHF Data Transceiver
e-Gizmo Multi-channel UHF Data Transceiver
MUDT designed as a UART wireless cable re-
placement operating in ! xed 9600 bps, half duplex,
no hardware handshake mode. As long as your
data packet does not exceed 96 bytes, your own
code can be totally oblivious to its presence. Your
UART code services wont need any extra handling
for its use. In general, UART code services that
work with direct cable connection under the just
mentioned operating parameters, will work as well
when the cable is replaced with the MUDT.
Multi-Channel Feature
The Multi-channel UHF Data Transceiver MUDT-
433 transmits and receives at ISM 433MHz RF
band, and the MUDT-315 operates at ISM 315MHz
band. MUDT frequency channel can be altered by
the user if it so desired by installing (or removing)
a jumper at the channel select port. This is a 4-bit
channel selection, allowing each module 15 chan-
nels with 400kHz.spacing.
Channel selection control can be passed on to the
host controller by removing all jumpers and con-
necting the MUDT channel port to a 4-I/O port of
the host controller.
RSSI Received Signal Strength Indicator
By forcing the MUDT RSSI control pin to logic 0,
the MUDT will append the RSSI value at the end of
every received data packet. You can use the RSSI
to determine whether enough signal strength is
available for a given installation that will ensure a
reliable RF link. You can also use the feature as a
rudimentary RF distance indicator or locator, albeit,
keep in mind the signal strength is affected by so
many things, hence, accuracy will be non-existent.
Frequency Range :
431.1 MHz 437.3 MHz
Channel Separation:
400kHz
Modulation:
FSK
RF Output power :
+10 dbm (10mW) typical
Rx sensitivity :
-105dbm
UART Baud Rate:
9600bps
Maximum Packet Size:
96 bytes
Operating Voltage:
5V/3.3V jumper selectable
Current Consumption TX:
36mA @ 5V
Current Consumption RX:
23mA @5V
Transmit to Receive latency :
20-30ms
RSSI :
150-635, with 635 corresponding to
-38dbm antenna RF input signal strenght
e-Gizmo MUDT-433, MUDT-315
Multi-Channel UHF Data Transceiver
Hardware Manual
Rev. 1r0
SPECIFICATIONS
Figure 1.
The Multi-Channel Data Transceiver
is available in 2 variants MUDT-433 operates
at ISM 433MHz, while MUDT-315 works at ISM
315MHz.
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