bris Flashcards
All passive and active equipment shall support a forward bandwidth of
54 MHz to 1,002MHz (1 GHz)
All passive and active equipment shall support a return bandwidth of
5 MHz to 42 MHz
ANSI/SCTE code for ground blocks
129 2007
A F-port must have this at the base to accommodate weatherproofing devices.
a non-threaded area
The bonding wire attachment must accommodate this range of wire sizes
6 AWG to #14 AWG solid copper
Cable specifications in all new installations
minimum Series 6 with a minimum foil-braid-foil, tri-shield configuration that includes a bonded inner foil tape and outer foil bonded to the jacket and at least 77% braid coverage
ANSI/SCTE code for drop amplifiers
161 2009
ANSI/SCTE code for indoor f-81 splice connectors
02 2006
An F-81 indoor splice connector must have at least one end with what
threads all the way to the base of the port to accommodate panel nuts and mounting to wall plates
Plastic fasteners must be
UV and ozone stable
requirements for a clip gun
must use a half-round plastic insert to prevent crushing
ANSI/SCTE minimum mechanical and electrical specifications for all passive devices
153 2008
Cutting blades in all drop cable preparation tools shall be replaced
monthly
Why must drop cable preparation tools have a notch in the dielectric cutting blade
to prevent nicking or scoring of the center conductor
Locking terminators must have what inside
an internal 75-ohm resistor
When must a locking terminator be sealed
When a disconnected drop is parked on the locking terminator
Why must a thread protector have a uniform internal inside diameter through the full length of the thread proctector
It allows the thread protector to be installed from either direction and ensures secure compression of the sleeve over a variety of female F-port lengths
Why must wall plates have a 7/16-inch hex recess molded in the wall plate
to hold the F-81 and prevent it from turning
What are requirements for f-connectors
compression-type with 360-degree retention of the cable
How often should compression tools be inspected
monthly
What must be done to drop before changing its connector at the groundblock
Drop must be disconnected from live plant to minimize inadvertent injection of noise
All connections EXCEPT those on CPE must be wrench-tightened to
30 to 35 inch-pounds
All aerial drops must meet the requirements of what Article of the National Electrical Code at a minimum
Article 820
Cable used for aerial installations must have
messenger wire or integral self supporting strength member
Aerial drop cable must have what on the braid wires?
A non-flowing flooding compound
What is max allowable length of series 6 drop cable?
150 feet
Series-11 or QR-320 cable is permissible only for aerial drops when
it is greater than 150 feet in length AND where its use will improve RF forward signal levels to within acceptable ranges as defined in Section 9 of this standard, and will therefore eliminate the need for RF signal amplification in the home
What must be used to prevent the messenger wire from separating from the drop cable?
S cable clips
Aerial drops must not interfere with what at the pole?
climbing space
Aerial drop routing must follow what whenever possible?
power service drop
When an aerial drop crosses property lines outside of the municipal right-of-way, it is called
cable trespass
What on strand device must be used to avoid cable trespass?
a mid-span drop attachment
What cannot be crossed with an aerial drop?
swimming pools and utility lines
How many splices or splits are allowed between the tap and the grounding point at the house?
Zero
How many splices are allowed on a temporary aerial drop
Two (one between the tap and span clamp) and (one between house attachment and ground-block)
Drop clearance from power at the pole
40 inches
Drop clearance from power at the mid-span
24 inches
Drop clearance from power at the house
12 inches
Drop clearance from Phone or other Telecom providers at the pole
12 inches
Drop clearance from Phone or other Telecom providers a the house
6 inches
Drop clearance from Phone or other Telecom providers at the mid-span
6 inches
Drop clearance over roads, streets, alleys; nonresidential driveways; parking lots and other areas subject to traffic
18 feet
Drop clearance over residential driveways subject to truck traffic
15.5 feet
drop clearance over residential driveways not subject to truck traffic
11.5 feet
Drop clearance above sidewalks or other pedestrian traffic areas
10 feet
Drop clearance of all points above a flat roof
10.5 feet
minimum distance span clamp must be from the hardline connector of any equipment.
6 inches
Minimum that span clamps on either side of a pole must be attached from the center of the pole
30 inches
Only approved location to attach a span clamp
the strand
What must a span clamp NEVER be placed over
lashing wire
To prevent cable damage, what must be used over hardline cable everywhere the hardline cable is lashed up to the strand and is close to the span clamp location?
cable guards
Minimum climbing area from center of pole that must be maintained at all times
30 inches
When attaching the drop cable to the opposite side of the pole from the tap, what is the minimum diameter of the drip loop from grip to strand?
5 inch diameter
When routing the drop cable on the strand, which side must it be run on?
Underside
What does tying the drop to the underside of the strand prevent?
squirrel chews
The only hardware a drop may be attached to
Comcast owned hardware
What method must be used to attach the drop to a span clamp or house hook?
The 2-4-4 method (or equivalent) or approved drop clamp hardware
What is the 2-4-4 method?
a) separating a minimum of two feet of messenger wire from the coaxb) passing the messenger wire through the hook TWICE and pulling it tightly while ensuring the messenger wire does not cross over itselfc) wrapping the messenger wire FOUR TIMES tightly around itself d) wrapping the messenger wire a minimum of FOUR TIMES around the unseparated drop cable and messenger to prevent any further separation of the drop cable and messenger. Any excess messenger wire must be trimmed off
When attaching a drop to the house, the drop cable must have what sag?
Drop cable must match the sag of the power drop. If there is no power drop reference, the drop cable must be tensioned for a minimum of 6 inches of sag for every 50 feet in length
When installing a mid-span drop, what order must the drop be installed in?
Pole to mid-span point, and then to the house
What is the only Comcast hardware a multi-span clamp must be attached to?
The Strand
To prevent cable damage, what must be placed between the multi-span clamp and the distribution cables?
Cable gaurds