- Contact Person : Ms. Wang Ada
- Company Name : Shenzhen Dingshengwei Electronics Co., Ltd.
- Tel : 86-755-86521099-8013
- Fax : 86-755-86522989
- Address : Guangdong,Shenzhen,BLD A, Guanglong Industrial Area, Xili Town,Nanshan District,Shenzhen, China
- Country/Region : China
- Zip : 518055
Fixed Channel Modulator
1. Intermediate frequency, high functional index.
2. Be processed with 1 SAW filters.
3. PLL technique is applied to audio and RF local
oscillator,high frequency stability and high accuracy.4. MMIC circuits are on key parts and SMT technology is applied to the overall unit.5. Output adopts screw filters. 6. With high security and high temperature stability. 7. Output level adjustment and A/V adjustment are designed ahead.8. 19 Standard housing. 9. We can make different channels according to the customer requests.
Specifications
reflection | output frequency range | 45-870MHz |
frequency accuracy | ± 5KHz | |
output level | 115 dBmV | |
out of band suppression | ≥ 60dB | |
side-band suppression | ≥60dB | |
output impedance | 75 Ω | |
video to audio carrier ratio | -10dB ~ -20dB | |
video frequency | input level | 0.6 ~ 1.5Vp-p |
input impedance | 75 Ω | |
input reflection | 30dB min | |
K coefficient | 4 % max 2T pulse | |
video s/n | 50dB( no emphasis ) | |
C/L delay | 40nsec | |
frequency response | ± 1dB | |
differential gain | ± 4 % modulation 87.5 | |
differential phase | ± 4 ° modulation 87.5 | |
audio frequency | input level | -10 ~ 10 dBm |
input impedance | 10KΩ min | |
frequency response | ± 1dB | |
distortion | 1 % | |
signal to noise ratio | -60dB | |
audio picture interval | according to the style | |
power supply | voltage | 220V ± 10 % A C |
Fixed Channel Modulator
