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Introduction
E-2600 is fixed channel modulator designed according to the principle of durability, simplicity, and high performance-price ratio. With its IF modulation circuit, video and audio carrier controlled by CPU PLL, it ensures frequency accuracy and stability. Equipped with proprietary SAW filter that can give real vestigial sideband response characteristic, its spurious rejection is over 60dB. Installed with single pass amplifier, its maximum output level is up to 117dB. Therefore it is applicable to large and medium sized headend system. E-2600 is one synthesized SAW filtered, spiral channel filtered high performance para-broadcasting fixed channel modulator. The product is made and tested completely in accordance with or even better than the parameters recommended by FCC. E-2600 is applicable to all the CATV channels, from standard channel 1 to standard channel 57 (47~866.25MHz).
Features
l The high quality, high performance SAW enables extraordinarily excellent sideband characteristic.
l With CPU controlled PLL technology, it enjoys high frequency accuracy.
l With unique RF power amplifier, its output level is up to 117dB.
l Video modulation depth, audio deviation, A/V ratio, RF level are all adjustable on front panel.
Item | Unit | Specifications |
RF | ||
Output Channels | MHz | 47~860 |
Output Level | dBµV(maximum) | 117 |
RF Output Range | dBµV(adjustable) | 20 |
V/A Ratio | dB | -10~-30 |
Visual Carrier Stability | KHz | ≤3.8 |
Aural Carrier Stability | KHz | ±1 |
Spurious Output | dBc | -62 |
C/N Ratio | dB | 68 |
Out-of-Band Noise | dBc | -98 |
Video | ||
Min. Video Input | Vp-p(87.5%modulation depth) | 0.5 |
Frequency Response | dB | ±1 |
Video S/N | dB | ≥55 |
Differential Gain | % | ≤5 |
Differential Phase | ° | ≤5 |
C/L Delay | ns | ≤25 |
Audio | ||
Input Level | mv(25KHz) | 200 |
Input Impedance | KΩ | 10 |
Frequency Response | dB(50Hz~15KHz | ±1 |
Pre-emphasis | usec | 75 |
General | ||
Power Supply | V | 220±20% |
Temperature Range | ℃ | 0~40 |
Dimensions | cm | 48.3×26.5×4.5 |
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