DRAKE VMM 600 Panduan Memulai Cepat

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Juga untuk DRAKE VMM 600: Buku Petunjuk (2 halaman), Panduan Cepat (2 halaman), Manual (2 halaman)

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THREE YEAR LIMITED WARRANTY

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 re-

place a defective unit.

To obtain such warranty service, the original purchaser must:

(1)

(1) Retain invoice or original proof of purchase to establish the start of the warranty period.

(2)

(2) Notify R.L. DRAKE HOLDINGS, LLC or the nearest authorized service facility, as soon as possible after discovery of a poss-

(2)

ible 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)

(3) Deliver the product to R.L. DRAKE HOLDINGS, LLC or the nearest authorized service facility, or ship the same in its or-

iginal container or equivalent, fully insured and shipping charges prepaid.

Correct maintenance, repair, and use are necessary 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)

(1) Improper maintenance or repair, including the installation of parts or accessories that do not conform to the quality and

(1)

specifications of the original parts.

(2)

(2) Misuse, abuse, neglect or improper installation.

(3)

(3) Accidental or intentional damage.

(3)

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 limit-

ations 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.

SPECIFICATIONS

Frequency Range:

VMM600-

54-600 MHz.

Factory set to one of the following

channels:

Cable Channels 1-86, 95-99 or

UHF-TV Channels 14-35.

VMM860-

600-864 MHz.

Factory set to one of the following

channels:

Cable Channels 87-135 or

UHF-TV Channels 36-69.

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:

-65 dBc, measured at -15 dB A/V

54 to 1000 MHz

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 adjust

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.

WARRANTY AND SPECIFICATIONS

VIDEO (continued)

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

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 Distortion:

0.5% Maximum.

Hum and Noise:

-65 dB minimum, referenced

to 25 kHz peak deviation.

GENERAL

DC Power Input:

+12 VDC @ 150 to 220 mA,

channel dependent.

Operating Temperature:

+5 VDC @ 75 to 100 mA,

channel dependant.

Size:

0°C to +50°C.

Weight:

1"W x 3.5" H x 7.5"D.

11 oz.

Specifications subject to change without notice or obligation.

VMM600 / VMM860 VIDEO MODULATOR SYSTEM

12 POSITION RACK MOUNT

VMM 600/VMM 860 MODULAR

4 POSITION

RACK MOUNT

SINGLE-CHANNEL MODULATORS

POWER SUPPLY

The R.L. Drake VMM 600/VMM 860 Video

Modulator System is a professional quality

modular headend system designed to optimize

rack space. Up to 12 VMM 600 and/or

VMM 860 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 VHF channel

2-13; Lowband channel A8; Midband channel

A-I and A5-A1; Superband channel J-W;

Hyperband channel AA-ZZ and AAA-XXX

(CATV 63-86) or UHF channel 14-35.

Aeronautical channels are offset positive with

a tolerance of ±5 kHz as required by FCC rules.

The VMM 860 provides a modulated visual and

RF carrier output on any single Hyperband

channel 87-135 or UHF channel 36-69.

® is a registered trademark of the R.L. Drake Holdings, LLC

POWER SUPPLY

The heterodyne conversion system, in

conjunction with the use of a SAW filter,

insures optimum vestigial selectivity for

adjacent channel headends.

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 Drake model

MMTS20 stereo encoder may be used with the

VMM when stereo audio is required.

P/N: 3852631C-04-2005