Transcript
C78 Complete Channels Agile Adjacent Modulator
1. Characteristic z Frequency Range 45.00~870.00MHz z Front-panel with button controlling z I⒉C controlling z LED with 5 figures z GaAs RF components Choose channel, modulating, audio, AV ratio and RF level via pressing button. All of the modulating figure adjusted by LED shows
2. Performance Parameters z RF Part Frequency Range: 45.00~870.00MHz
Frequency Precision:5KHz
Frequency Step: 250KHz
Output Level: ≤110dBuv (max)
Level Adjust Range: 20dB Parasite Output: -60dB C/N In Band: 65dB (min62dB) Adjacent Channel: 68dB ( min65dB ) Out of Band : 60dB Video/Audio Carrier Wavelength Ratio: -13~-20dB
Output Impedance: 75 Output Reverse Loss: 14dB
z Video Part Standard Video Input Level: 1.0Vp-p S/N: 50dB
Input Video Impedance: 75 Video Response: 1.5dB
Differential Gain: 2.5﹪
Differential Phase: 2.5°
C/L Delay: 40nS
Video Modulating: 87.5﹪
Video Fix: 25dB
Modulating Range: 1~32
z Audio Part Input Level Range: +5~25dBmV Frequency Response: 1.5dB
Input Impedance: >10k S/N: 52dB
Audio Pre-distortion: 0.4﹪ Max Audio Bias: 50KHz Audio Level: 1~32
Audio frequency: 6.50, 6.00, 5.50, 4.50MHz Pre- emphasis: 50us
z General Part Power Supply: 220V.AC
Dimension: 19”x7.8x1.75
Operating Temp: -10℃~+40℃
Weight: 2.5KG
3. Installation and Operating explanation Each Modulator is from tested , aging examined and good assembled, suitable packaged, shipped safely. Adopt complete framework design, for “EIA 19” case. z Front Panel
②③④⑤⑥⑦ ① LED ②
- Increase the figure - Decrease the figure
④
- Choose Button - Choose Button (OK)- Conformation Figure ( MENU)- Step into the menu
Back Panel RF OUTPUT
1
VI DEO I NPUT
AUDI O I NPUT
!
CAUTI ON: TO REDUCE THE RI SK OF ELECTRI C SHOCK, DO NOT REMOVE COVER( OR BACK) . NO USERSERVI CEABLE PARTS I NSI DE. REFER SERVI CI NG TO QUALI FI ED SERRVI CE PERSONNEL.
3
2
RF Output – Output RF modulating signal by F connector. Video Input- BNC connecting input signal Audio Input – BNC connecting Input Signal Alternating Power Connector – Connecting 220V/50Hz.
4. Operating Explanation z The first layer
Pressing (MENU ) into the second layer “ Menu Page”
AC 220V 50Hz 1A
z The second layer
It shows frequency agile adjust, choose △ and ▽ to adjust frequency
It shows Audio frequency agile adjust, choose △ and ▽ to adjust frequency
It shows Video modulating adjust, choose △ and ▽ to adjust suitable figure
It shows adjust voice, choose △ and ▽ to adjust suitable figure
It shows A/V -18dB, choose △ and ▽ to adjust suitable figure
It shows adjust RF level output, choose △ and ▽ to adjust suitable figure
z Figure Preservation After adjusting, press (OK), the system step into the preservation state, shows “OK” on LED, then back to the main page automatically
Output frequency 184.25MHz (8 channels standard) z 1. 2. 3.
Special Notice Save the last figure which is set after the electricity has been cut. It should be adjusted half an hour later the moment be open. Please give the enough space for cooling when operating together.
