Service manual

User Manual SD125E
Page 7
English
SD125E Receiver Specification
Receiver Specification VHF UHF
Model Series SD-125E V2 SD-125E U2
Sensitivity (@ 12dB SINAD)
25 KHz Channel Spacing < 0.28uV < 0.28uV
12.5 KHz Channel Spacing < 0.30uV < 0.30uV
Sensitivity ( 1/100 Error Rate)
With ACC-513 < -113dBm < -113dBm
With ACC-514 < -110dBm < -110dBm
Amplitude Characteristic > -3dB , < +3dB > -3dB , < +3dB
Adjacent Channel Selectivity
25 KHz Channel Spacing(Nom.) > 70 dB > 70 dB
(Extreme Condition) > 60 dB > 60 dB
12.5 KHz Channel Spacing(Nom.) > 60 dB > 60 dB
(Extreme Condition) > 50 dB > 50 dB
Spurious Rejection(100KHz ~ 4GHz) > 70 dB > 70 dB
Image / Half IF Rejection > 70 dB > 70 dB
Intermodulation Response Rejection
±25 kHz/ 50 kHz > 70 dB > 70 dB
±50 kHz/ 100 kHz > 70 dB > 70 dB
Conducted Spurious Emission
9 KHz - 1 GHz < -57 dBm < -57 dBm
1 GHz – 4 GHz < -47 dBm < -47 dBm
RX Spurious Emissions (Radiated)
9 KHz - 1 GHz < -57 dBm < -57 dBm
1 GHz – 4 GHz < -47 dBm < -47 dBm
AF Distortion
Nominal condition < 3% < 3%
Extreme condition < 10% < 10%
RX Hum & Noise (only audio)
25 KHz Channel Spacing < 40 dB without PSOPH < 40 dB without PSOPH
12.5 KHz Channel Spacing < 40 dB with PSOPH < 40 dB with PSOPH
Receiver Response Time : < 16 ms < 16 ms
Squelch (factory pre-set)
Open -113dBm
Close -116dBm
Squelch Attack Time
RF Level at Threshold < 20 ms (RSSI), < 40 ms (Analog)
RF Level at Threshold + 20dB < 10 ms (RSSI), < 30 ms (Analog)
Squelch Decay Time 5 ms Min., 20ms Max.
Antenna Socket Input Match > 10 dB Return Loss
Temperature Stability for 1st < 5 ppm, 2nd < 15 ppm from -30° to + 60° C
L.O. Frequency
L.O. Frequency Aging Rate ±2 ppm/ year