TVX-560/E video modulator-exciter is a professional vestigial sideband dual conversion design with synthesized RF output and a High level adjustable power output from 5 mW- 2000 mW RF Power for driving high power stages 5 W and 35 W. It is fully synthesized and we have several versions available. The TVX-560/E is designed to accept video and audio baseband signals from a satellite receiver, TV camera, or any compatible input.
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Frequency Range:
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82 CATV channels, 54 through 550 MHz:
channels 2 through 78 and 95 through 99, and UHF broadcast channels
14 through 27. |
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FCC Frequency Offsets:
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Programmable by front panel switches
for 0, +12.5 kHz or +25 kHz for aeronautical channels. See
programming chart. |
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Output Level:
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2.2 W maximum, (adjustable) |
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Output Impedance:
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50 Ohms; return loss of 12 dB. |
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A/V Ratio:
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Audio Carrier -20 to -10 dB referenced
to video carrier, adjustable. |
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Frequency Stability,
Visual:
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Within ?5 kHz of assigned channel
frequency. |
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Aural Intercarrier
Frequency:
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4.5 MHz, ?5 kHz. |
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Spurious Outputs:
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-60 dBc typical, -56 dBc worst case,
measured at -15 dB A/V ratio and with modulator output level of
+ 55 dBmV. |
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In-Channel C/N:
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60 dB typical. |
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Broadband Noise:
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-72 dBc @ ?12 MHz offset, -80 dBc
@ ?30 MHz or greater spacings. (Specified levels are referenced
to the video carrier and measured in a 4 MHz bandwidth.) |
| Video |
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Input level for 87.5%:
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1 Vp-p ?3 dB, manual gain adjust with
front panel control. |
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Input Impedance:
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75 Ohms, return loss of 18 dB minimum. |
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Frequency Response:
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Flat ?2 dB from 30 Hz to 4.2 MHz. |
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Video S/N:
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60 dB minimum, luminance weighted. |
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L/C Delay:
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Within 50 nanoseconds of 0 nanoseconds
L/C delay (complies with FCC rule 76.605). |
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Differential Gain:
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Less than ?5% (10 to 90% APL). |
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Differential Phase:
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Less than ?5 degrees (10 to 90% APL). |
| Audio |
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Input Level for 25
kHz Peak Deviation:
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140 mV minimum. Manual gain adjustment
with front panel control. |
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Input Impedance:
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10K Ohms, unbalanced. |
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Pre-emphasis:
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75 m Sec. |
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Frequency Response:
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20 Hz to 15 kHz, +1, -3 dB, referenced
to 75 m Sec. Pre-emphasis curve. |
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4.5 MHz Intercarrier
Stability:
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5 kHz, 0?to + 50?Celsius (32?to
122?Fahrenheit). |
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Total Harmonic Distortion:
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1.5% maximum. |
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Hum and Noise:
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-60 dB minimum, referenced to 25 kHz
peak deviation. |
| Composite IF Loop |
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IF Frequency:
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45.75 MHz visual carrier, 41.25 MHz
aural carrier. Loop output is after SAW filtering. |
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Loop Level:
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+28 dBmV (visual carrier). |
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Loop Impedance:
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75 Ohms, return loss of 12 dB minimum. |
| General |
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AC Power Input:
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115 VAC ?10%, 60 Hz, 20 watts. |
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Operating Temperature
Range:
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0?to 50?Celsius (32?to 122?Fahrenheit),
ambient. |
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Size:
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1.75 inches (44 mm) Height x 19 inches
(481 mm) Width x 10.2 inches (256 mm) Depth |
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Weight:
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5.8 lbs. (2.6 kg.). |
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Connectors:
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Video input, IF loop, and RF output
are all type F. Audio input is RCA phono. Phono to F adapter is
provided to allow for RCA phono video input. |
Video Transmitters 
Receivers
