DRAKE HCP2550A Manual de instrucciones descargar pdf (Pagina 9)

3 1

2 5

INPUT

CHANNEL

OUTPUT

CHANNEL

OUTPUT

ENABLED

AFC

OFF ON

CATV

OFF

AIR

IRC

HRC

STD

CATV 100

CHANNEL PLAN

7 8

4 4

INPUT

CHANNEL

OUTPUT

CHANNEL

OUTPUT

ENABLED

AFC

OFF ON

CATV

OFF

AIR

IRC

HRC

STD

CATV 100

CHANNEL PLAN

CAUTION:

ATTENTION:

- RISK

OF FIRE - REPLACE

FUSE AS MARKED

AFTER DISCONNECTING

UNIT FROM AC LINE.

- RISQUE D'INCENDIE -

REMPLACEZ FUSIBLE DU

TYPE INDIQUE APRES

DEBRANCHER DU SECTEUR.

MADE IN THE U.S.A. BY

SERIAL #

IN OUT

EAS

AUTO

MANUAL

OFF ON

SIGNAL

STRENGTH

115 VAC, 60 Hz

30 WATTS

RF OUTPUT RF INPUTPILOTEASEAS IF INFCC OFFSET COMPOSITE IF

FUSE

1/2AMP,250V

SLO BLO

IF LOOP

CAUTION:

ATTENTION:

- RISK

OF FIRE - REPLACE

FUSE AS MARKED

AFTER DISCONNECTING

UNIT FROM AC LINE.

- RISQUE D'INCENDIE -

REMPLACEZ FUSIBLE DU

TYPE INDIQUE APRES

DEBRANCHER DU SECTEUR.

MADE IN THE U.S.A. BY

SERIAL #

IN OUT

EAS

AUTO

MANUAL

OFF ON

SIGNAL

STRENGTH

115 VAC, 60 Hz

30 WATTS

RF OUTPUT RF INPUTPILOTEASEAS IF INFCC OFFSET COMPOSITE IF

FUSE

1/2AMP,250V

SLO BLO

IF LOOP

Installation 5

CONNECTIONS AND CONTROLS – All connections to

and from the HCP2550A are made through the rear panel.

Figure 3 shows a typical two channel processing

installation involving the converting of an off-air signal and

a CATV signal. Additional channels can be processed by

using additional channel processor units and either

multi-port combiners or combinations of two-port

combiners.

INSTALLATION NOTES – Level adjustment provides

optimum performance in multichannel installations. The

channel processor outputs should be checked periodically

with a spectrum analyzer to maintain a ±1 dB variation of

adjacent channel carriers. Aural/Visual (A/V) ratios

should be held to –15 dB or less. The ‘Output Level’ and

‘A/V Ratio’ controls are used respectively to make these

adjustments. If an output level of less than +50 dBmV is

required, add an attenuator of the appropriate value to the

modulator output.

Example:

For an output level of +45 dBmV, add a 12 dB

attenuator pad to the modulator output and set the

output level.

RACK MOUNTING – Adequate ventilation is very

important in multichannel installations. Units should be

spaced apart by at least one panel height wherever

possible, and some air movement is advisable in

enclosed rack cabinets. Excessive heat will shorten

component life and unit performance will be degraded

without proper cooling.

FCC PAR.76.612 – Certain cable channel frequencies

assigned to aviation and navigation communications

require frequency offsets. The OUTPUT CHANNEL

switches set the output frequency for a visual carrier

frequency of ‘xx.25’ or ‘xxx.25’ MHz only. The exact

output frequency, however, is relative to the input

frequency and is offset plus, minus, or no offset on

required channels according to the setting of the rear

panel "FCC OFFSET" switch. Refer to the ‘Output

Channel’ list included in this manual to determine the

required offset for a particular output channel.

Figure 3 - Typical Multiple Channel Processor Installation -

Output Channel Is Different From Input Channel

OUT

5-1000 MHz -130 dB RFI

OUT

3611

2-WAY SPLITTER

2-WAY SPLITTER/

COMBINER

RF OUT

TO SYSTEM

HCP2550A

OFF-AIR

CATV

OUTPUT CHANNEL IS DIFFERENT FROM INPUT CHANNEL:

AFC "ON"

FCC OFFSET: "+" (automatic)

AFC "ON"

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

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DRAKE HCP2550A Manual de instrucciones Pagina 9

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