Description
Overview
GAOTek 24 channels modulator is a space saving, fixed channel modulator system. It consists of 24 individual, vertically mounted, fixed frequency modulators and an efficient switching type power supply module. It is designed for 19 in rack mounting.
Features
- Easy setup, internal fans for cooling modulators
- Only one RF output. No need combiner
- Precise frequency control with PLL circuitry
- Each modulator has its control panel
- Also available in NTSC, all PAL configuration
Technical Specifications
| Frequency Range | Â 47 MHz to 860 MHz (Any one channel) |
| Output Level |  ≥105 dBμV |
| Output Level Adjustment Range |  0 dB to –20 dB (Variable) |
| Video to Audio Carrier |  -10 dB to –30 dB adjustable |
| Output Impedance |  75 Ω |
| Spurious Output Suppression |  ≥60 dB |
| Frequency Accuracy |  ≤±5 KHz (VHF), ≤±10 KHz (UHF) |
| Video Output Reflection |  ≥12 dB (VHF) ≥10 dB (UHF) |
| Video Input Level | Â 1.0 Vp-p (87.5% Modulation) |
| Video Input Impedance |  75 Ω |
| Differential Gain |  ≤5% (87.5% Modulation) |
| Differential Phase |  ≤5% (87.5% Modulation) |
| C/L Delay |  ≤45 ns |
| Flatness |  ±1 dB |
| Video Modulator Depth | Â 0% to 90% (Variable) |
| Video S/N |  ≥55 dB |
| Audio Input Level |  1 Vp-p (±50 KHz) |
| Audio Input Impedance |  600 Ω |
| Audio S/N |  ≥57 dB |
| Audio pre-weighted |  50 μs |
| Power Supply |  AC 220 V±10% 50 Hz±2 Hz,50 W |
| Working Temperature | 32 °F to 104 °F (0 °C to 40 °C) |
| Dimensions | 19 in (482.6 mm) 4 U housing |