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PICO MACOM INC.  12500 Foothill Blvd.  •  Lakeview Terrace, CA 91342  •  (818) 897-0028 •  (800) 421-6511 •  FAX (818) 834-7197

9

BENCH  ALIGNMENT

1.

Do Not remove the cover. Plug in the unit to
108 to 125 Vac outlet.

2.

Set the sweep generator center frequency to
the center frequency of the desired channel.

3.

Connect the TV signal generator or the agile
modulator to the sweep generator external
marker input.

4.

Set the sweeper output level below the AGC
input range  -10 dBmv for the 72* and 0 dBmv
for the *BS

5.

Adjust  C11 to move the audio notch to the
upper channel edge.

6.

Coarse tune the amplifier and output filters by
adjusting C1, C3, C6, C8 and C10.

7.

Fine tune the filters by adjusting C1, C2 ,C3
and  C6, C7, C8, C9 and C10 to obtain a
response similar to the figure below.

8.

Connect the sweep generator to the "Thru"
and "Out" connectors. Adjust the bandstop
thru filter C4 and C5 for a response similar to
the figure to the right.

 9.

Connect a TV signal generator to the input and
a spectrum analyzer to the strip amplifier out-
put.

10.

Adjust the front panel Aural Level to locate the
notch at the lowest frequency it will tune.  Then
adjust  C11  until the notch is exactly on the
audio carrier.

11.

Set the front panel RF gain AGC control to
minimum gain ( maximum AGC).

12.

Vary the input level from +4 dBmv to 30 dBmv
and verify the output level remains constant at
a level of:

LBS

54 dBmv 

±

 2 dB

72L

62 dBmv 

±

 2 dB

13.

Set the RF gain AGC control to maximum gain
(minimum AGC).

14.

Vary the input level from +12 dBmv to 40
dBmv and verify the output level remains
constant at a level of:

LBS

54 dBmv 

±

 2 dB

72L

62 dBmv 

±

 2 dB

I N P U T   F I L T E R,   O U T P U T   F I L T E R,    A U R A L   L E V E L

6 MHz

6 MHz

F center

6 MHz

2 MHz/Div

10 dB log/ Div

F video

F audio

F center

6 MHz

2 MHz/Div

10 dB log/ Div

F video

F audio

All manuals and user guides at all-guides.com

Summary of Contents for 72H

Page 1: ...Lakeview Terrace CA 91342 818 897 0028 800 421 6511 FAX 818 834 7197 Installation And Operation Manual SINGLE CHANNEL AMPLIFIERS LBS FMS MBS HBS UBS 72L 72M 72H 72S All manuals and user guides at all...

Page 2: ...uct on an unstable cart stand tripod bracket or table The product may fall causing serious injury to a child or adult and serious damage to the appliance 9 Ventilation This video product should never...

Page 3: ...the operatinginstruction Adjustonlythosecontrolsthatarecovered bytheoperatinginstructions Animproperadjustmentmayresult in damage and will often require extensive work by a qualified technician to re...

Page 4: ...by the number of channels Another option on VHF signals is to use a MX 7 or MX 4V The MX 7 MX 4V are frequency selective splitters for up to 7 non adjacent 10 foot dish In some areas where the signals...

Page 5: ...st way to explain AGC is with an example Assume a strip amplifier has a maximum gain of 54 dB and the output is set to 55 dBmv The input to the amplifier is initially 10 dBmv Only 45 dB 55dBmv 10dBmv...

Page 6: ...MHz 30 dB F center 9 MHz 45 dB UBS 3 Channels 50 dB 6 Channels 65 dB FMS Switchable Wide Channel 5 40 dB Narrow Channel 6 20 dB Noise Figure LBS MBS HBS 72L 72M 72M 6 dB 72S 7 dB UBS 9 dB Controls AGC...

Page 7: ...The signal originating from a broadband or yagiantennaisconnectedatthisFconnector Refer to page 3 for information on antenna selection and proper input levels 8 OUT The filter amplified signal is dir...

Page 8: ...amplifier modulator and processor outputs The PHC 12 consists of two rows of direc tional couplers combined by a hybrid splitter The directional coupler combining provides highisolation 40dB betweenth...

Page 9: ...nnel The Pico Macom single channel amplifiers can be alignedtootherchannelswithinthefrequencyband The input and output filter components within the Test Equipment Sweep Generator System Wavetek 1076 1...

Page 10: ...the Thru and Out connectors Adjust the bandstop thru filter C4 and C5 for a response similar to the figure to the right 9 Connect a TV signal generator to the input and a spectrum analyzer to the str...

Page 11: ...Authorization RA number which will be used to track your product Be prepared to provide 1 The model number and channel number of the product 2 The date of purchase 3 A specific identification of the p...

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