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Introduction
E-1208 is one combined agile mini-modulators unit that is developed according to space-saving, durable, and high performance design principle. It is composed of 10 mini-modulators, 2 amplifiers and one highly efficient switching power supply that are all vertically installed in one 3U sized standard rack. For each modulator, concentrated power supply, and internal combining mode are applied to allow system debugging simple and reliable. The 3U sized standard rack can either be installed on 19-inch cabinet, or is flexible to apply wall-hanging mode. Each modulator’s channel is displayed by LED on front panel. You will easily change channel numbers to set up random headend system within 47~860MHz.
Features
l Double frequency conversion, modularized amplification
l Video modulation depth, audio deviation, A/V ratio, output level are all controlled by CPU.
l The switching power supply applied is applicable to voltage 100~200V.
l Equipped with built-in combiner, no need to install additional combiner.
Item | Unit | Specifications |
RF | ||
Output Frequency | MHz | 47~860 |
System | PAL B/G, D/K, M/N | |
Max Output Level | dBµV | ≥95 |
RF | dB | 20 |
V/A Ratio | dB | -13~20 |
Broadband Noise | dB | -60 |
Frequency Stability | KHz | ±3 |
Output Impedance | Ω | 75 |
Output Rejection Loss | dB | 16 |
Video Mod Depth | % | 87.5 |
Video | ||
Input level for 87.5% | Vp-p | 1 |
Differential Gain | % | ≤5 |
Differential Phase | ° | ≤5 |
C/L Delay | nsec | ≤45 |
Frequency Response | dB | ±0.75 |
% | 72.5~90 | |
Video IF Output Frequency | MHz | 906 |
Video S/N | dB | 60 |
Audio | ||
Input Level | Vp-p | 0.4 |
Input Impedance | Ω | 10K |
Audio Carrier Response | MHz | 4.5, 5.5, 6.0, 6.5 |
Deviation | dB | ±0.5 |
Pre-emphasis | Msec | 50 |
General | ||
Power Supply | V | 90~250 |
Fuse | A | 20-0.5 |
℃ | 0~40 | |
Connectors | Video Audio input, IF loop and RF output are all type F. |
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