OG_STD-302N-R-429M_v10e Circuit Design, Inc.
5
OPERATION GUIDE
Receiver part
Item MIN TYP MAX Remarks
Receiver type Double superheterodyne
1st IF frequency MHz 21.7
2nd IF frequency kHz 450
Maximum input level dBm 10
BER (0 error/2556 bits)
*1
dBm -108 -115 PN 9 4800bps
BER (1 % error)
*2
dBm -120 PN 9 4800bps
Sensitivity 12dB/ SINAD dBm -120 fm1 k/ dev 2 kHz CCITT
70 1 st Mix, 2 signal method, 1 % error
Spurious response rejections
*3
dB
55 2 nd Mix, 2 signal method, 1 % error
Adjacent CH selectivity
*3
dB 50
+/- 12.5 kHz,
2 signal method, 1 % error
Blocking dB 84
Jamming signal +/- 1MHz
2 signal method, 1% error
Intermodulation
*4
dB 50 2 signal method, 1 % error
DO output level V 0 2.8 L = GND H = 2.8 V
30 50 CH shift of 25 kHz (from PLL setup)
RSSI rising time ms
50 70 When power ON (from PLL setup)
50 100 CH shift of 25 kHz (from PLL setup)
Time until valid Data-out
*5
ms
70 120 When power ON (from PLL setup)
Spurious radiation (1
st
Lo) dBm -60 -54 Conducted 50 Ω
300 350 400 With -97 dBm at 429.5 MHz
RSSI mV
190 240 290 With -113 dBm at 429.5 MHz
Specifications are subject to change without prior notice
Notice
Communication range depends on the operation environment and ambient surrounding
The time required until a stable DO is established may get longer due to the possible frequency drift caused
by operation environment changes, especially when switching from TX to RX, from RX to TX and changing
channels. Please make sure to optimize the timing. The recommended preamble is more than 20 ms.
Antenna connection is designed as pin connection.
RF output power, sensitivity, spurious emission and spurious radiation levels may vary with the pattern used
between the RF pin and the coaxial connection. Please make sure to verify those parameters before use.
The feet of the shield case should be soldered to the wide GND pattern to avoid any change in characteristics.
Notes about the specification values
*1 BER: RF level where no error per 2556 bits is confirmed with the signal of PN9 and 4800 bps.
*2 BER (1 % error): RF level where 1% error per 2556 bits is confirmed with the signal of PN9 and 4800 bps.
*3 Spurious response, CH selectivity: Jamming signal used in the measurement is unmodulated.
*4 Intermodulation: Ratio between the receiver input level with BER 1% and the signal level (PN9 4800 bps)
added at the points of 'Receiving frequency - 200 kHz ' + ' Receiving frequency -100kHz' with which BER 1%
is achieved.
*5 Time until valid Data-out: Valid DO is determined at the point where Bit Error Rate meter starts detecting the
signal of 4800bps, 1010 repeated signal.
Conditions:
All specifications are specified based on the data measured in a shield room using the PLL setting controller
board prepared by Circuit Design.
Measuring equipment:
SG=ANRITSU communication analyzer MT2605
Spectrum analyzer = ANRITSU MS2663G, BER measure = ANRITSU MP1201G
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