OES (12-16-19) Flashcards Preview

SAFETY, XH, CT1-4, Phone Pairs, Fiber > OES (12-16-19) > Flashcards

Flashcards in OES (12-16-19) Deck (157)
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1

When cutting input and output cables for placement at the service distribution point,
enough cable must be left to make a______
on each cable

5-inch-diameter drip loop

2

drop clearance over residential driveways subject to truck traffic

15.5 feet

3

max length of jumper between wall plate and cpe

6 feet

4

the order of connection in for a mid-span drop

pole to the mid-span point, and then to the house

5

For mobile home installations, the enclosure must be mounted to what?

service pole

6

drop clearance from power at mid-span

24 inches

7

drop clearance above sidewalks or other pedestrian traffic areas

10 feet

8

What needs installed in a floor entry hole before inserting cable in mobile homes?

a wall bushing

9

Upstream Ingress Maximum Threshold

-30 dBmV

10

Why must there be a notch in the dielectric cutting blade?

to prevent nicking or scoring of the center conductor

11

Legacy STB Upstream Power Maximum Level

57 dBmV

12

DOCSIS Transmit Power Maximum Level

less than or equal to 54 dBmV

13

Amplification on the forward path must be

unity gain

14

Entry holes in mobile homes must be

through floor only.

15

drop clearance from phone at mid-span

6 inches

16

What should be done before to drop before installing a connector

Disconnect drop from live plant to minimize inadvertent injection of noise

17

why must amplifier power supply transformers have a mounting tab?

to secure the device to a wall outlet

18

ANSI

American National Standards Institute

19

drop clearance from power at the pole

40 inches

20

drop clearance above roofs not accessible to pedestrians

3 feet

21

Cables used for aerial installations must have what?

an integral self-supporting strength
member. (messenger)

22

Underground drop cable restorations requiring splicing must allow only ____
in any cable section between driveways (independent of length).

TWO splices

23

Legacy drop installations can forgo a drop clamp only if this is done properly.

2-4-4

24

The drop cable must be tensioned to match

the sag of the power drop

25

target completion time frame to bury drop after temporary drop is installed?

No later than 30 days

26

Requirements for Cables used for RF signal distribution in all new installations

Minimum size Series 6
minimum foil-braid-foil, tri-shield configuration that includes a bonded inner foil tape, outer foil tape bonded to the jacket, and at least 77% braid coverage

27

cable clips must be spaced every _to_ vertically.

30 to 36 inches

28

outside entry holes must be sealed with

RTV sealant

29

Bonding option 3

directly to the power company grounding electrode (ground rod)

30

All new construction homes must have what installed in the trench?

conduit or cable-in-conduit