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Installation
It is recommended that assistance be available to safely install equip-
ment in equipment racks. If audio source is BTSC/MTS encoded remove
the top cover of unit, locate and switch the preemphasis disable switch,
and replace cover prior to rack installation.
1.
Install chassis in equipment rack (equipment rack sold separately)
by supporting the bottom and rear of M860 at the desired elevation
in rack.
2.
Line up the side holes of chassis with the tapped equipment rack holes.
Insert the provided screws through the side holes in chassis and
3.
thread into the tapped equipment rack holes.
4.
Fasten the bottom screws first, then fasten top screws (tighten
securely).
5.
Install a short F-type jumper cable (provided) between the IF output
and IF input connector on the rear of the M860 (Required for proper
operation).
6.
Connect a cable from the output of the video source to the video
input connector of the M860.
7.
Connect a cable from the output of the audio source to the audio
input terminal strip of the M860 (If source is BTSC stereo disable
preemphasis switch inside chassis).
8.
If the audio source provides a 4.5MHz composite audio output,
connect a cable from source to the 4.5MHz input of the M860.
9.
Connect a cable from the output RF connector of the M860 and
the input connector of combining system.
10. Connect power cord to receptacle supplying uninterrupted line
power (LED on front panel will illuminate).
11. 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.
12. Adjust the aural carrier level to 15dB below the level of the video
carrier by slowly rotating the AURAL LEVEL adjustment on the
front panel of the M860.
13. 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 M860 and adjacent channels.
14. Adjust the Output level of the M860 to match the video and audio
carrier levels of adjacent channels by adjusting the OUTPUT
LEVEL adjustment on the front panel of the M860.
STEREO AUDIO CONNECTION:
Center Conductor to Left + (Positive)
Shield to Left - (Negative)
Center Conductor to Right + (Positive)
Shield to Right - (Negative)
+
+
AUDIO OUTPUT LEVEL
LANGUAGE
AUDIO OUTPUT
VIDEO
DATA
CLOCK
MONO
LEFT
RIGHT
_
_
_
_
+
+
GND
+
+
+
_
L
R
MONO
LEVEL
PR4200IRD SATELLITE RECEIVER
RIGHT AUDIO IN
LEFT AUDIO IN
AUDIO IN
RF OUT
R
L
PCFM MODULATOR
RF OUT to Distribution System
FROM SATELLITE ANTENNA
950-1750MHz
+
+
RF IN
FUSE
VIDEO
COMPOSITE
70 MHz
AC25OV
OUT
OUT
950-1450
18V 250mA
1/2A
MHz
LNB POWER
OUT
117V
IN
OUT
ON
OFF
.35A
H
V
60Hz
INV
NOR
120VAC
60Hz 10W
CAUTION
!
RISK OF ELECTRIC SHOCK
DO NOT OPEN
600W MAX
Ph: 800-421-6511
Installation Procedure
M860
Signal Combining Methods
PICO MACOM recommends connecting the headend components in
the following manner: Each of the modulators, signal processors or strip
amplifiers output are connected to a combining network. Either a PHC-12G
or a PHC-24G headend combiner may be used to accomplish this purpose.
The PHC-12G or PHC-24G passive 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 com-
bined 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-30RK550 or CA-30RK1000. The output of the
amplifier is connected to the main distribution line.
The CHC-16U/550 and CHC-16U/860 sixteen channel active combin-
ers provides both signal combining and post amplification of the head-
end signals. Up to 16 channels may be combined using the CHC-16U.
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-12G
outputs are combined via a two-way splitter, which is connected to a
CA-30RK1000 launch amplifier. The input levels to the combiner,
whether from a modulator, signal processor or a strip amplifier, must be
at the same amplitude.
V
+52dBmV
Ch. 2
M860
A
PHC-12G
-18dB
+34dBmV
RF
+10dBmV
+52dBmV
SP860
Ch. 3
IN
RF
+14dBmV
+52dBmV
*BS
Ch. 4
IN
+10dBmV
V
+42dBmV
M860
A
+42dBmV
RF
+10dBmV
SP860
IN
+14dBmV
+42dBmV
RF
*BS
+10dBmV
IN
V
+52dBmV
M860
A
RF
+10dBmV
+52dBmV
SP860
IN
+52dBmV
RF
+14dBmV
*BS
IN
+10dBmV
www.picomacom.com
+58dBmV
6dB PAD
CA-30RK1000
ATTENUATOR PAD
C
h. 2
CHC-
16U/860
+6dB to
+10dB
+52dBmV
C 3
h.
C 4
h.
Ch. 2
+45dBmV
Ch. 4
EVEN CHANNELS
+41dBmV
CA-30RK1000
10dB
Ch. 3
ATTENUATOR PAD
+45dBmV
ODD CHANNELS
+60dBmV
7
Rev. 06/03
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