Microyal Model 4000M

Professional Agile Adjacent Modulator


4000M Professional Agile Adjacent Modulator is uniquely designed for adjacent commercial CATV system. It is made with proprietary SAW filter that achieves true VSB response and IF modulation signal processing. The spurious harmonic is more than 60dB, and with outside channel filter, the spurious harmonic could be above 70dB. Both video and audio carriers are PLL controlled to ensure accuracy and stability. With build-in microprocessor MCU controlling, two LED displays on front panel. It has the features of last channel memory, frequency fine tune with fine tune range between 4MHz; RF output level above 115dBμV; it also has the feature of high audio and video linear. It can be used in medium-large CATV system independently or cooperate with IF modulating Microyal-3000M / Microyal-2500MB / Microyal-2000MB modulator to meet the requirement of middle-big CATV Headend System.

 

Specifications:

Output Frequency Range

48MHz~550MHz (Ch01Ch22, Z1Z38 Adjustable)

Video Input Level

1.0Vp-p for 87.5% Mod

Video Flatness

2dB

Differential Gain

3%

Differential Phase

3

Video S/N Ratio

52dB

C/L Delay

45ns

Audio Pre-emphasis

50μs

Audio Carrier Modulation Deviation

50KHz (Audio Input Level is 0dBm6dB)

Audio Harmonic Distortion

0.8%

Audio S/N Ratio

58dB

Video Clamp Level

26dB

RF Output Return Loss

10dB(UHF); 12dB(VHF)

Output Frequency Accuracy

5KHz (VHF); 10KHz (UHF)

Output Level

115dBμV

Output Frequency Tuning Range

4MHz(0.5MHz step by)

Video/Audio Carrier Power Ratio

1020dB Adjustable

Spurious Harmonics

60dB

Space between Video Audio Carrier Frequency

6500KHz2KHz

Adjacent Harmonics

-45dB

General  
Normal Working Condition  

Operation Temperature

5~40C

Relative Humidity

85%

Atmospheric Pressure

86~106Kpa

Power Supply Voltage

AC 220V10%

Frequency

50Hz2Hz

Power Consumption

<20W