VMM600 Fixed Channel Modulator

ProductPart Number
VMM600 - Channels 2 thru 86, 95 thru 99
10072XX
VMM600

$165.00

Clear

Product Detail

The Drake VMM600 Video Modulator is a professional quality modular headend system designed to optimize rack space. The VMM600 is a high quality fixed channel heterodyne audio/video modulator. One to twelve modulators can be mounted in the same amount of rack space typically required for two standard size units. Ideally suited for private cable, hotels and motels, institutional, and SMATV applications, the VMM600 accepts video and audio baseband signals from a satellite receiver, TV camera, videotape recorder, TV demodulator, or similar signal sources.

  • +45 dBmV output. Adjustable from +30 to +45 dBmV
  • SAW filtering for superior adjacent channel performance
  • Front panel control of RF output level, A/V ratio, and video/audio modulation
  • Complies with FCC Rules Part 76
  • Rack mount and power supply sold separately

Spec Sheet | User Manual


 

Technical Data And Specifications

DRAKE VMM600 FIXED CHANNEL MODULATOR 10072XX
RF:
Frequency Range: 54 through 600 MHz
Frequency Selection: Set at factory to one of the following channels: Cable Channels 1 through 86, 95 through 99
Output Level: + 45 dBmV minimum Adjustable over a 12 dB range
Output Impedance: 75 Ohms, return loss of 12 dB
A/V Ratio: Audio Carrier – 10 to – 22 dB referenced to video carrier, adjustable
Frequency Stability: ± 5 kHz (Visual Carrier)
Intercarrier Frequency: 4.5 MHz, ± 50 Hz
FCC Frequency Offsets: All aeronautical channels are offset positive
Spurious Outputs: 54 to 1000 MHz – 65 dBc, measured at – 15 dB A/V ratio and with modulator output level of ± 45 dBmV
Broadband Noise: – 95 dBc, referenced to video carrier. (4 MHz BW and ± 36 MHz offset)
Video:
Input Level for 87.5% Modulation: 1 Vp-p ± 3 dB, manual gain adjustable with front panel control
Input Impedance: 75 Ohms, return loss of 18 dB minimum
Frequency Response: 20 Hz to 4.2 MHz, ± 1 dB
Video S/N: 65 dB minimum, luminance weighted
Differential Gain: ± 3% (10 to 90% APL)
Differential Phase: ± 3 degrees (10 to 90% APL)
C/L Delay: Within 50 nSec. Of 0 nSec. (standard), or FCC predistortion, (option)
Audio:
Input Level for 25 kHz Peak Deviation: 100 mV to 2.5 Vrms, manual gain adjustment with front panel control
Input Impedance: 10 K Ohms, unbalanced
Pre-emphasis: 75 µS (Defeatable via internal jumper setting for BTSC baseband stereo compatibility)
Frequency Response: 40 Hz to 15 kHz, ± 1.0 dB referenced to 75 µS pre-emphasis curve ( 40 Hz – 100 kHz ± 0.5 dB if pre-emphasis is defeated)
4.5 MHz Intercarrier Stability: ± 50 Hz, frequency synthesized
Total Harmonic Distotion: 0.5% maximun
Hum and Noise: -65 dB minimum, referenced to 25 kHz peak deviation
General:
DC Power Input: + 12 VDC @ 150 to 220 mA, + 5 VDC @ 75 to 100 mA channel dependant
Operating Temperature: 0° to 50° Celsius
Dimensions: 3.5″ H X 1″ W X 7.5″ D
Weight: 11 oz.

Specifications, price, and availability are subject to change without notice or obligation.