The PDI-50121CM is a space saving, fixed channel modulator system. It consists of 12 individual, vertically mounted, fixed frequency modulators and an efficient switching type power supply module mounted in one 3-1/2" high housing. It is designed for 19" rack mounting. Each modulator is SAW filtered and is factory set to the desired channel and proper offset. Precise frequency is maintained with PLL circuitry. Recessed front panel controls are preset, at the factory, for 87.5% depth of modulation, ±25kHz audio deviation, and -15dBc video audio ratio. RF is set at maximum. It offers excellent video performance and high reliability in a 2U rack. $129.00
per Unit - *Plus Shipping/ Handling |
| • +45dBmV output with very low spurious response | |
| • Precise frequency control with PLL circuitry | |
| • Easy setup | |
| • SAW filtering for true adjacent channel operation | |
| • BTSC stereo compatible |
| RF SECTION | |
| Frequency Range: | 54 to 750MHz |
| Channels | VHF, CATV (STD, HRC) |
| Output Level | +45dBmV |
| Output Impedance | 75 ohms |
| Audio/Video Ratio | Adjustable -12 to -20dBc |
| Frequency Stability | ±5kHz |
| Spurious Outputs | >-60dBc (A/V ratio at -15dBc) |
| Out of Band Noise | -90dBc |
| In Band C/N Ratio | >60dB |
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| VIDEO SECTION | |
| Input Level | 0.8
to 1.2 Vp-p for 87.5% Voltage 120Vac, 60Hz modulation |
| Frequency Response | <±1.5dB (30Hz to 4.2MHz) |
| Differential Gain | 4% |
| Differential Phase | <4 degrees |
| Chroma/Luminance Delay | Meets FCC group delay |
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| AUDIO SECTION | |
| Input Level | 0.75Vp-p for 25kHz deviation |
| Input Impedance | 20 Kohms unbalanced |
| Frequency Response | ±1.0dB reference to standard 75us pre-enphasis, NTSC |
| Frequency Stability | ±5kHz |
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| GENERAL | |
| AC Line and Power | 85 - 265 Vac, 60Hz, 25 Watts |
| Operating Temperature | -10deg. C to +50deg. C |
| Dimensions | 19 L x 7 3/4 x 3 1/2 |
| Weight | 18 pounds |
| Fittings | Video
Input "F" RF Output "F" Audio Input "RCA" |