PFAP550MS
7
Rev. 05/03
Ph:800-421-6511
www.picomacom.com
Installation Procedure
WARNING:
When connecting the
PFAP550MS
directly to a TV set, attenuate
the output sufficiently to prevent overdriving the TV set. The input level to
the TV should be 10 dBmV
.
MOUNTING:
Install chassis in equipment rack (equipment rack sold sepa-
rately) by supporting the bottom and rear of PFAP550MS at the desired
elevation in rack. Line up the side holes of chassis with the tapped equip-
ment rack holes. Insert the provided screws through the side holes in the
chassis and thread into the tapped equipment rack holes. Fasten the
bottom screws first, then fasten top screws, tighten securely.
1. Connect the F-type jumper provided from the IF OUT to the IF IN on the
rear panel.
2. Connect the
PFAP550MS to a 115 VAC grounded receptacle. Observe
the lit LED light indicating power is on.
3. Connect the antenna input signal and check the level at the input test
point using a signal level meter or spectrum analyzer. The level must
be at 0 dBmV minimum for a minimum carrier to noise ratio of 45 dB.
4. Connect the signal level meter or spectrum analyzer to the -30dB TEST
POINT (front panel) and adjust the output level control to desired level.
5. Check the aural carrier level. It should be set at 15 dBmv below the
video carrier.
6. Verify performance by connecting a TV to the output test point or
through an attenuator (50 dB) to the RF output. The input level to the
TV should be 10 to 15 dBmV maximum.
7. The video and audio stand-by inputs provide a muting capability for the
PFAP550MS if the input signal is disabled.
CA-30RK/550
TSC-20
UVSJ
HLSJ
MPA-25
PRE-AMP
U/V
SEPARATOR
JOINER
20 DB
DIRECTIONAL
COUPLER
HI/LO
SEPARATOR
JOINER
TSV-4
TSV-4
TEST
POINT
19 dBmV
17 dBmV
SPLITTERS
PFAP550MS
PFAP550MS
PFAP550MS
PFAP550MS
PFAP550MS
PFAP550MS
PFAP550MS
PFAP550MS
PFAP550MS
PFAP550MS
PHC-12G
HEADEND
12 CHANNEL
COMBINER
30 dB POST
AMPLIFIER
SINGLE CHANNEL
ANTENNA
F-59T
F-59T
DSU-4P
Off-Air Processing
Cable Input
Ch 2 to W & FM
Custom Output
Ch 2 to W & FM
+49.5 dBmv
Channel Elimination Filter
Notches out one Complete Channel
Passes all other channels 2 thru 78
Channel Processors extract one premium
superband channel, one sub-band channel and
place them in channel slots 2 and 6.
CA-45RK550
+16.5 dBmv
+16.5 dBmv
13.5 dBmv
10.5 dBmv
CEF/550-6
PFAP550MS
Input ch. 36, Output ch. 6
53.5 dBmv
57 dBmv
57dBmv
53.5 dBmv
TSB-21G
TSB-21G
TSB-21G
CEF/550-4
PFAP550MS
Input ch.T7, Output ch. 4
Modulator
Output channel T7
VIDEO INPUT
AUDIO INPUT
Off-Cable “Cherry Picking”
Signal Combining Methods
The output levels of the processor should be the same as the output of
the other headend components. The
PFAP550MS processors are usually
combined with the
PFAM550MS modulator, or LBS/HBS series strip ampli-
fiers. Three methods are suggested to combine strip amplifier, modulator
and processor outputs.
A) The PHC-12G twelve channel and PHC-24G twenty-four channel com-
biners consist of two rows of directional couplers combined by a hybrid
splitter. The directional coupler combining provides high isolation (40 dB)
between the inputs. Normally, the odd channels are combined on one
row while even channels are combined on the other row of directional
couplers. The combiner loss is 18 dB per channel for the PHC-12G and
21 dB per channel for the PHC-24G.
B) The CHC-16U/550 sixteen channel active combiner provides both
signal combining and post amplification of the headend signals. Up to 16
channels may be combined using the CHC-16U/550. The combiner gain
is 15 dB per channel.
C) The final method of combining signals uses three hybrid splitters per
headend rack. The odd channels are combined in one splitter, the even
channels in another splitter and the two splitters are combined to a single
output with a third splitter. Each rack is then combined with a final splitter
prior to the
CA-30RK550 post amplifier.
Ch. 2
Ch. 3
Ch. 4
+34dBmV
+60dBmV
M860
SP860
XBS
+52dBmV
+52dBmV
+52dBmV
+10dBmv
+14dBmv
+10dBmv
SP860
XBS
+52dBmV
+52dBmV
+52dBmV
+14dBmV
+10dBmV
SP860
XBS
+50dBmV
+50dBmV
+50dBmV
+10dBmV
+14dBmV
+10dBmV
Ch. 2
Ch. 3
Ch. 4
PAD
+58dBmV
EVEN CHANNELS
Ch. 2
Ch. 3
Ch. 4
ODD CHANNELS
+43dBmV
+43dBmV
+36dBmV
+60dBmv
RF
IN
RF
IN
RF
IN
RF
IN
RF
IN
M860
PHC-12G
-18dB
CHC-16U/550
+10dB to +15dB
CA-30RK550
CA-30RK550
ATTENUATOR PAD
PFAP550MS
PFAP550MS
PFAP550MS
+10dBmV
RF
IN
+10dBmV
RF
IN
+10dBmV
RF
IN
+10dBmV
RF
IN
(A)
(B)
(C)