User's Manual

16
OPENBRAIN Technologies Co., LTD.
5.3. Radio Characteristics for Each Check Point
 Measurement results and Bluetooth specification compliance of modules stored in
temperature and moisture resistant chamber for 2 hours at -25℃
RF Operating Check 1(-25℃)
Result
(dBm)
Bluetooth
Spec.(dBm)
Verdict
Output Power
+2.65 -6 to +4 Pass
Sensitivity at 0.1% BER for all packet types
-86 ≤-70 Pass
Modulation
Characteristic
s
Channel df1_avg
(kHz)
df2_avg
(kHz)
df2/df1
(%)
Bluetooth
Spec.
Verdict
0 164.6 158.7 96.42 140<df1_avg, df2_avg
<175
0.80<df2/df1(%)
Pass
39 164.5 155.7 94.65 Pass
78 164.7 156.1 94.78 Pass
Initial Carrier Frequency
Tolerance
(ICFT)
Df0_max
(kHz)
Df0_min
(kHz)
Bluetooth
Spec.(kHz)
Verdict
0.2 -0.1 ±75 Pass
Carrier
Frequency
Drift(CFD)
Channel f_drift_max
(kHz)
Drift_rate_max
(kHz/50us)
Bluetooth
Spec.(kHz)
Verdict
0 10.1 4.7 Drift Rate Max
≤20
f drift max≤40
Pass
39 9.4 -5.3 Pass
78 7.4 6.1 Pass
TX Output Spectrum
-20dB Bandwidth
f_h-f_l Bluetooth
Spec.(MHz)
Verdict
0.914 f_h - f_l <= 1.000MHz Pass