Drake VM2862 Frequency Agile Modulator Stereo

Print Drake VM2862 Frequency Agile Modulator Stereo pageRequest Bulk Pricing CAMCOR ITEM NO. 341025000 | MFG. PART NO. VM2862
Drake VM2862 Frequency Agile Modulator Stereo
Drake VM2862 Frequency Agile Modulator Stereo
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Product Highlights
Drake VM2862 Frequency Agile Modulator Stereo R.L. Drake now offers you superior stereo audio performance and extensive channel capacity with the VM2862 BTSC MTS stereo modulator. An optional ... More

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Product Description

Drake VM2862 Frequency Agile Modulator Stereo

R.L. Drake now offers you superior stereo audio performance and extensive channel capacity with the VM2862 BTSC MTS stereo modulator. An optional secondary audio program (SAP) module may be field installed in the VM2862.As a quality American made product from Drake, long recognized for manufacturing products of enduring quality and reliability, the VM2862 is designed and engineered to surpass the most demanding engineering requirements with frequency coverage up to 860 MHz.

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Product Features
  • Frequency agility with channel 2 through 135 coverage from 54 MHz to 864 MHz.
  • High output power to +60 dBmV.
  • Built in bandpass filters and very low noise mixer designs provide a low broadband noise floor for large, multiple modulator installations.
  • Emergency Alert System (EAS) ready with EAS IF signal input and automatic switchover.
  • Front panel LED modulation indicators and level controls to simplify installation and operation.
  • Automatic channel offsets where specified by FCC regulations.
  • Video low-pass and SAW filtering plus output bandpass filtering to ensure quality performance in densely crowded CATV or SMATV environments.
  • High quality IF SAW filter with video delay predistortion eliminates adjacent channel interference.
  • Complies with FCC rules Part 76.
  • IRC, HRC, CATV, and Off-Air Broadcast frequencies are selectable by an internal jumper.
  • Made in the U.S.A.
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Specifications

Specifications

Technical
Frequency Range 54-864 MHz standard CATV channels 2-135 Broadcast, HRC, and IRC channel plans available by internal jumper
Output Level +60 dBmV minimum, 12 dB minimum adjustment range
Output Impedance 75 Ohms, 12 dB return loss within output filter passband
A/V Ratio Audio carrier -25 to -12 dB referenced to video carrier, adjustable
Frequency stability ±5 ppm. All oscillators locked to the same internal reference
Amplitude stability ±1 dB
FCC Frequency Offsets Automatic, positive.
Spurious Outputs -60 dBc measured at -15 dB A/V ratio and with modulator output level of +60 dBmV, 5 MHz to 1000 MHz
Phase Noise Audio carrier -25 to -12 dB referenced to video carrier, adjustable
A/V Ratio -85 dBc measured at 10 KHz offset
Output Filter Bands 54 MHz to 258 MHz, 258 MHz to 462 MHz, 462 to 660 MHz, and 660 MHz to 864 MHz
Broadband Noise -80 dBc, 4MHz bandwidth, +60 dBmV output level, ±18 MHz offset within output filter passband
-90 dBc, outside of output filter passband, output filtered into 4 approximately 200 MHz wide bands
Video
Input Level 1 Vp-p ±3 dB manual gain adjust with LED front panel modulation indicators
Input Impedance 75 Ohms, return loss of 25 dB
Frequency Response 20 Hz to 4.2 MHz, ± 1.0 dB with 4.5MHz trap off
20 Hz to 4.1 MHz, ± 1.0 dB with 4.5MHz trap on
In-channel C/N 65 dB
Differential Gain ± 3%
Differential Phase ± 3 degrees
L/C Delay ± 50 nS of FCC predistortion with 4.5 MHz trap off,
-20 + 80 nS of FCC predistortion with 4.5 MHz trap on
Monaural Audio
Input level 250 mVrms to 2.5 Vrms, manual gain adjustment with LED modulation indicators
Input Impedance 10 K Ohms, unbalanced
Pre-emphasis 75 µS
Frequency Response 50 Hz to 15 kHz, ±1 dB
Total Harmonic distortion 0.5% maximum
Signal to Noise Ratio (S/N) 65 dB
BTSC MTS Stereo Audio
Input level 250 mVrms to 2.5 Vrms, manual gain adjustment with LED modulation indicators
Input Impedance 10 K Ohms, unbalanced
Stereo Channel Separation 30 dB, 50 Hz to 12.5 kHz
25 dB, 12.5 kHz to 14 kHz
Frequency Response ±0.5 dB, 50 Hz to 14 kHz
Total Harmonic distortion 0.5% maximum
Signal to Noise Ratio (S/N) 65 dB
SAP Audio - (Field Installed Option)
Input level 250 mVrms to 2.5 Vrms, manual gain adjustment with LED modulation indicator on rear panel
Input Impedance 10 K Ohms, unbalanced
Total Harmonic distortion 1% maximum
Signal to Noise Ratio (S/N) 80 dB
EAS Input
Input level +30 dBmV, ±1 dB (visual carrier)
Input Impedance 75 Ohms, 20 dB return loss
Auto Switching Level +20 dBmV
Isolation 60 dB
General
AC Power Input 115 VAC, ±10%, 60 Hz,
23 watts (VM2860), 28 watts (VM2862)
Fuse 1/2 Amp Slo-Blo 5 x 20 mm
Operating Temperature Range 0° to 50° C, ambient
Cooling Internal 1.85 CFM fan allows operation in the rack without air space between units
Radiated Emissions FCC Part 15
Size 1.75"H x 19"W x 11.25"D
Weight 8.5 lbs
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