Provide the grounding block [at the main CATV backboard][_____]. Ground
this device according to the requirements of IEEE C2 and NFPA 70.
3.1.1.3
Trunk, Feeder, and Drop Cable
**************************************************************************
NOTE: Delete Trunk and Feeder from the title for
housing units and when trunk and feeder cable are
not used in the job.
**************************************************************************
Provide cable to grounding blocks, to line taps, and to outlets.
3.2
FIELD QUALITY CONTROL
3.2.1
System Pretest
**************************************************************************
NOTE: Use the first bracketed item requiring the
Contractor to align and balance the system, where
amplifiers are provided. For single family housing
units, delete second bracketed item requiring
testing at 151 and 547 MHz. Testing at these
frequencies is required for other applications.
Use option for testing at each outlet instead of
random sampling and at furthest outlet when a small
number of outlets are provided in the job.
**************************************************************************
Upon completing installation of the CATV system, the Contractor [shall
align and balance the system and ]shall perform complete pretesting.
During the system pretest, Contractor, utilizing the approved spectrum
analyzer or signal level meter, shall verify that the system is fully
operational and meets all the system performance requirements of the
specification. Contractor shall test the signal loss in dBmV at 55[, 151,
547,] and 750 MHz. The signal levels shall be 0 dBmV (1000 microvolts),
minimum. The signal shall not exceed 15 dBmV over the entire system
bandwidth. Any deficiencies found shall be corrected and revalidated by
follow up testing. Contractor shall measure and record the video and audio
carrier levels at each of the frequency levels specified at each of the
following points in the system:
a.
Furthest outlet from [each communication closet][service entrance
point of connection].
b.
A random sampling of 25 percent of the [outlets[from each
communication closet]][housing units].
[c.
At each outlet.]
[d.
[Headend and ]Distribution amplifier inputs and outputs.]
3.2.2
Acceptance Tests
**************************************************************************
NOTE: Use option for testing at each outlet instead
of random sampling and at furthest outlet when a
SECTION 16783N
Page 18
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