Pico Macom PFAM860SAW operation manual Installation Procedure, Signal Combining Methods, PLM860SAW

PLM860SAW Manual.qxd 7/31/03 2:28 PM Page 7

Installation Procedure

PLM860SAW

Installation

It is recommended that assistance be available to safely install equipment in equipment racks.

1. Install chassis in equipment rack (equipment rack sold separately) by supporting the bottom and rear of PLM860SAW at the desired eleva- tion in rack.

2.Line up the side holes of chassis with the tapped equipment rack holes.

3Insert the provided screws through the side holes in chassis and thread into the tapped equipment rack holes.

4.Fasten the bottom screws first, then fasten top screws (tighten securely).

5.Connect a cable from the output of the video source to the video input connector of the PLM860SAW.

6.Connect a cable from the output of the audio source to the audio input connector of the PLM860SAW.

7.Connect a cable from the output RF connector of the PLM860SAW and the input connector of combining system.

8.Connect power cord to receptacle supplying uninterrupted line power (LED on front panel will illuminate).

9.Connect a cable between the front panel output test point and a spectrum analyzer or signal level meter. Measure the video and aural carrier level.

10.Adjust the aural carrier level to 15dB below the level of the video car- rier by slowly rotating the AURAL LEVEL adjustment on the front panel of the PLM860SAW.

11.Connect a cable between the combining system test point and a spectrum analyzer or signal level meter. Measure the video and aural carrier level of the PLM860SAW and adjacent channels.

12.Adjust the Output level of the PLM860SAW to match the video and audio carrier levels of adjacent channels by adjusting the OUTPUT LEVEL adjustment on the front panel of the PLM860SAW.

Signal Combining Methods

PICO MACOM recommends connecting the headend components in the following manner: Each of the modulators, signal processors or strip ampli- fiers output are connected to a combining network. Either a PHC-12Gor a PHC-24Gheadend combiner may be used to accomplish this purpose.

The PHC-12Gor PHC-24Gpassive headend combiner consists of two rows of directional couplers combined by a hybrid splitter. Normally, the odd channels are combined on one row while even channels are combined on the other row of directional couplers for maximum isolation. The output of the combiners may be connected to the input of a launch amplifier such as a CA-30RK550or CA-30RK1000. The output of the amplifier is con- nected to the main distribution line.

The CHC16U/550 and CHC16U/860 sixteen channel active combiners provides both signal combining and post amplification of the headend signals. Up to 16 channels may be combined using the CHC16U. The combiner gain is 15 dB per channel.

A 24 channel system hook-up is shown. (The same combining result may be accomplished by using a single PHC-24G).

The two PHC-12Goutputs are combined via a two-way splitter, which is connected to a CA-30RK1000launch amplifier. The input levels to the combiner, whether from a modulator, signal processor or a strip amplifier, must be at the same amplitude.

V	PLM860SAW+52dBmV			Ch. 2
A
				PHC-12G
				-18dB
RF	+10dBmV SP860		+52dBmV		+36dBmV				+60dBmV
				Ch. 3			6dB PAD	CA-30RK1000
IN
							ATTENUATOR PAD
RF	+14dBmV	XBS	+52dBmV	Ch. 4
IN	+10dBmV
V		PLM860SAW +55dBmV
						Ch. 2
A						CHC-16U/860
						+6dB
						to
						+12dB
RF	+10dBmV SP860		+55dBmV					+65dBmV
						Ch. 3
IN

AUDIO OUTPUT CONNECTION:

FROM SATELLITE ANTENNA 950 - 1750 MHz

CENTER CONDUCTOR TO MONO+ (POS.)

SHIELD TO MONO- (NEG.)

+

+

+

+

VIDEO

COMPOSITE

70 MHz

RF IN

18V 250mA

AC25OV

FUSE

AUDIO OUTPUT LEVEL

OUT

OUT

950-1450

1/2A

LANGUAGE

AUDIO OUTPUT

MHz

LNB POWER

D A T

CLOCK

MONO

LEFT

RIGHT

VIDEO

OUT

+

_

+

_

GND

+

_

+

_

+

_

L

R

MONO

LEVEL

117V

IN

OUT

H

V

ON

OFF

.35A

INV

NOR

60Hz

PR4200IRD SATELLITE RECEIVER

VIDEO IN	AUDIO IN
+	+	+
	+
	RF OUT	120VAC
VIDEO IN	AUDIO IN
+	+	600 VA MAX

PLM860SAW MODULATOR

'RF OUT' TO TV OR DISTRIBUTION SYSTEM

RF	+14dBmV	XBS	+60dBmV	PAD	Ch. 4
IN	+10dBmV		ATTENUATOR PAD

Ch. 2

VPLM860SAW +50dBmV

A				+43dBmV
				Ch. 4
RF	+10dBmV SP860		+50dBmV	EVEN CHANNELS
					+39dBmV	8dB PAD	CA-30RK1000	+60dBmV
IN
				Ch. 3		ATTENUATOR PAD
RF	+14dBmV	XBS	+50dBmV	+43dBmV
IN	+10dBmV

ODD CHANNELS

Ph: 800-421-6511 www.picomacom.com 7

Rev. 06/03