OPERATION GUIDE
.
OG_STD-502-R_v09e
Circuit Design, Inc.
3
3. Specifications
General specifications
* All values are taken with the antenna ports terminated with 50 ohm and at 25 degree C +/- 5 degree C unless otherwise
noted
Item
Specification
Unit
Remarks
Applicable standard
EN300 440-1, FCC part 15.247,
ARIB STD-T66
Communication method
Simplex
Emission type
Direct sequence spread spectrum
Modulation method
FSK
Number of channels
77ch (Ch 0 to Ch 76)
Antenna connection
RP-SMAJ
Dimensions
50 × 30 × 9 ( W x D x H )
mm
RP-SMAJ and power & signal
connector pins excluded
Weight
24
g
Interface specifications
Item
Specification
Unit
Remarks
Baud rate: 19.2 kbps (typ.), No parity
Character: 8 bits, Stop bit : 2 bits
Baud rate
19.2 / 38.4 / 57.6 kbps
Input
TXD
L = 0 to 0.25
H = Vref - 0.4 to Vref
V
UART
*1
Interface for module
setting
Output
RX
D
L = 0 to 0.25
H = Vref - 0.4 to Vref
V
UART
*1
RX data output
DO
L = 0 to 0.25
H = Vref - 0.4 to Vref
V
RX data out using a transparent
method
*1
CLK for data input/output
CLK
L = 0 to 0.25
H = Vref - 0.4 to Vref
V
*1
TX data input
DI
L = 0 to 0.25
H = Vref - 0.4 to Vref
V
TX data out using a transparent
method
*1
Diversity receiving
antenna
DIV
L = 0 to 0.25
H = Vref - 0.4 to Vref
V
Shows on which antenna data is
received.
*1
TX/RX switching terminal
TXRXSEL
L = 0 to 0.3
H = Vcc - 0.4 to Vcc
V
H: RX / L: TX
RF standby terminal
STBY
L = 0 to 0.3
H = Vcc - 0.4 to Vcc
V
H: Standby / L: RF operation
Reset terminal
RST
L = 0 to 0.25
H = Vcc - 0.4 to Vcc
V
Reset with L for more than 100 us
Communication level
reference terminal
VREF
3.1 - 5.5
V
Vref (a terminal for applying a
reference voltage consistent with
the external communication level)
*1
" H" level depends on the voltage level applied to the communication level reference terminal.
