Drake VMM600 Fixed Channel Modulator - Manual

THREE YEAR LIMITED WARRANTY
SPECIFICATIONS
Specifications subject to change without notice or obligation.
54-600 MHz.
Factory set to one of the following
channels:
Cable Channels 2-86, 95-99
600-806 MHz.
Factory set to one of the following
channels:
Cable Channels 87-125
AUDIO
GENERAL
DC Power Input:
Operating Temperature:
Size:
Weight:
+12 VDC @ 240 mA,
+5 VDC @ 35 mA,
0°C to +50°C.
1"W x 3.5" H x 7.78"D.
11 oz.
RF
Frequency Range:
VMM600-
VMM806-
VIDEO
R.L. DRAKE HOLDINGS LLC warrants to the original purchaser this product shall be free from defects in material or
workmanship for three (3) years from the date of original purchase.
During the warranty period R.L. DRAKE HOLDINGS LLC or an authorized Drake service facility will provide, free of charge,
both parts and labor necessary to correct defects in material and workmanship. At its option, R.L. DRAKE HOLDINGS LLC may
replace a defective unit.
To obtain such a warranty service, the original purchaser must:
1. Retain invoice or original proof of purchase to establish the start of the warranty period.
2. Notify R.L. DRAKE HOLDINGS LLC or the nearest authorized service facility, as soon as possible after discovery of a
possible defect, of:
a) the model and serial number,
b) the identity of the seller and the approximate date of purchase; and
c) A detailed description of the problem, including details on the electrical connection to associated equipment and
the list of such equipment.
3. Deliver the product to R.L. DRAKE HOLDINGS LLC or the nearest authorized service facility, or ship the same
in its original container or equivalent, fully insured and shipping charges prepaid.
Correct maintenance, repair, and use are important to obtain proper performance from this product. Therefore carefully read the
Instruction Manual. This warranty does not apply to any defect that R.L. DRAKE HOLDINGS LLC determines is due to:
1. Improper maintenance or repair, including the installation of parts or accessories that do not conform to the
quality and specifications of the original parts.
2. Misuse, abuse, neglect or improper installation.
3. Accidental or intentional damage.
All implied warranties, if any, including warranties of merchantability and fitness for a particular purpose, terminate three (3)
years from the date of the original purchase.
The foregoing constitutes R.L. DRAKE HOLDINGS LLC'S entire obligation with respect to this product, and the original
purchaser shall have no other remedy and no claim for incidental or consequential damages, losses or expenses. Some states
do not allow limitations on how long an implied warranty lasts or do not allow the exclusions or limitation of incidental or
consequential damages, so the above limitation and exclusion may not apply to you.
This warranty gives you specific legal rights and you may also have other rights which vary from state to state. This warranty
shall be construed under the laws of Ohio.
The heterodyne conversion system, in
conjunction with the use of a SAW filter,
insures optimum vestigial selectivity for
adjacent channels.
The modulators are designed to accept any
standard audio/video source such as NTSC
video and audio baseband signals from a
satellite receiver, TV camera, videotape
recorder, TV demodulator, or similar signal
source.
The modulators accept standard (sync
negative) polarity video at a 0.7 to 2.5 Vp-p
level. All level controls are located on the front
panel for ease of operation. Output level of
+45 dBmV is typical and is adjustable from
+30 to +45 dBmV.
Field-defeatable audio pre-emphasis enables
passing of BTSC encoded standard baseband
stereo audio signals.
The R.L. Drake VMM 600/VMM 806 Video
Modulator System is a professional quality
modular headend system designed to optimize
rack space. Up to 12 VMM 600 and/or
VMM 806 modulators can be racked alongside
a single power supply in the Drake 12 position
rack mount or up to 4 modulators can be racked
in the 4 position rack mount. Either model is a
high quality, fixed channel heterodyne audio/
video modulator.
The VMM 600 provides a modulated visual and
RF carrier output on any single channel 2-86,
95-99; Aeronautical channels are offset positive
with a tolerance of ±5 kHz as required by FCC
The VMM 806 provides a modulated visual and
RF carrier output on any single channel
12 POSITION RACK MOUNT POWER SUPPLY
®
VMM 600/VMM 806 VIDEO MODULATOR SYSTEM 1
® is a registered trademark of the R.L. Drake Holdings LLC
© Copyright 2012 R.L. Drake Holdings LLC P/N: 651232000A
10072XX/10073XX
Rev:120917
4 POSITION
RACK MOUNT
POWER SUPPLY
OR VMM 600/VMM 806 MODULAR
SINGLE-CHANNEL MODULATORS
rules.
87-125.
4 WARRANTY AND SPECIFICATIONS
Impedance: 75 Ohms
Return Loss: 15 dB
Power Level: +45 dBmV
Power Level Range: 10 dB continiously adjustable
Carrier-to-Noise: 63 dB
Broadband Noise: -90 dBc
Spurious Outputs: -66 dBc
Aural/Visual Carrier Ratio: -11 to - 19 dB
4.5 MHz Aural Inter-carrier
Freq. Tolerance: ± 250 Hz; 32 to 122 °F
Connector: “F” Female
Impedance: 75 Ohms
Return Loss: 20 dB
Input Level: 1.0 volt Peak to Peak
Frequency Response: 1.0 dB Peak to Valley
Peak to Peak Video-to-RMS
Hum Ratio: 64 dB
Signal-to-Noise Ratio: 65 dB
Differential Gain: 2.0%
Differential Phase: 2.0 degree
C/L Delay: Per FCC Requirements
Connector: RCA
Input Impedance: Greater than 10k Ohms,
unbalanced
Input Level: 0.5 to 4.0 volt peak-to-peak
(constant AGC range)
Frequency Range: 50 Hz to 12 kHz
Frequency Response: ± 0.5 dB
Total Harmonic Distortion: 1% @ 25 kHz deviation
Signal-to-Noise Ratio: 70 dB
The modulators have Audio AGC that eliminates
variations in loudness level that may be present
among various program sources.
Printed in China