455C54 Datasheet, PDF (2/3 Pages) Shenzhen Luguang Electronic Technology Co., Ltd – Ceramic Discriminator

455C54
Ceramic Discriminator
5. ELECTRICAL CHARACTERISTICS ( 0℃ to + 40 ℃ )
Item
5-1
Receiver Audio 3dB Bandwitdth (from 455KHz)
5-2
Receiver Audio Output Voltage (at 455KHz)
5-3
Distortion (at 455 KHz)
5-4
Withstanding Voltage
Requirements
±4.0 KHz min.
40 ± 20 mV
3.0% max.
50V D.C. for 1 minute
5-5 Test Method
Input signal Condition Input level
: 80dB
Frequency Deviation : ±4.0KHz
Modulation Frequency : 1 KHz
1) Recoverd Audio Input the above signal and sweep the carrier frequency
3dB Bandwidth around 455 KHz and find out the maximum audio
output frequency. Then sweep the carrier frequency
again and find two frequencies which are observed
-3dB attenuation points from the maximum point .
Higher frequency point is called (f1) and lower called
(f2), (f1-455KHz)is defined as upper 3dB bandwidth
and (455Khz-f2) defined as lower 3 dB bandwidth.
2) Receiver Audio Receiver audio output voltage shall be measured
Output Voltage when carrier frequency is adjusted to 455KHz.
3) Distortion
Carrier frequency is adjusted to 455Khz. And
then ,distortion shall be measured with 1 kHz
modulation frequency.
6. PRYSICAL AND ENVIRONMENTAL CHARACTERISTICS
Test Item
Condition of Test
Requirements
6-1 Lead Strength After force 1.0Kg is applied to each lead in axial direction.
Lead Pulling filter shall be measured.
No
mechanical
Lead Bending When force of 0.5Kg is applied to each lead in axial damage and the
。
measured values shall
direction the lead shall be folded up to 90 from the axial _{meet item 5.}
direction and folded back to the axial direction .
6-2 Vibration Filter shall be measured after being applied vibration of
amplitude of 1.5mm with 600 to 3,300 r.p.m. band of
vibration frequency to each of 3 perpendicular directions
for 2 hour .
SHENZHEN LUGUANG ELECTRONIC TECHNOLOGY CO.,LTD.