YETI

Question 1

How many times a day does YETI discover billing mismatches?

Answer 1

6 times a day

Question 2

How many icons are represented in the spectrum chart?

Answer 2

7, Max, signal, max noise, burst noise, noise, avg noise, min

Question 3

What are the 3 colors represented in the spectrum interface?

Answer 3

Green, Yellow, Red

Question 4

Max

Answer 4

Maximum signal over the watch time or since last reset.

Question 5

Signal

Answer 5

Shows maximum signal since last reset I.E. traffic, modem burst, QAM, ect.

Question 6

What two methods does YETI use to classify the portion of a trace through an interface boundry as signal or noise?

Answer 6

Statistical methods and algorithms.

Question 7

Max noise

Answer 7

Shows maximum of Burst Noise and noise in the watch lifetime or since last reset.

Question 8

Bursts/impulses from ingress, coupling inter-modulation, ect.

Answer 8

Burst Noise

Question 9

Thermal/Gaussian, Johnson-Nyquist

Answer 9

Types of Noise YETI identifies

Question 10

AVG noise

Answer 10

Shows avg noise and burst noise values exceeding the nTile over the half-life window.

Question 11

Min

Answer 11

shows the Min of averaged Noise and Burst Noise values less than 2/3 of the nTile over the watch lifetime or since last reset

Question 12

Capture count

Answer 12

Measures the number of captures since watch START

Question 13

What is the target capture rate in YETI?

Answer 13

18 captures per second.

Question 14

Multiple watches on the CMTS, network latency, slow SNMP responses from the CMTS will cause what?

Answer 14

Slow down the capture rate.

Question 15

The time the data was captured to the time it was displayed in the UI not including the update rate

Answer 15

Lag

Question 16

What options are available under the wrench icon for the web version of YETI?

Answer 16

Reset trace, Upper frequency, Quiet Time, and Update Rate

Question 17

Upper frequency

Answer 17

Choose between 55 MHz and 95 MHz

Question 18

This only affects how often the data updates on the spectrum chart not the capture rate.

Answer 18

Update rate

Question 19

What are the 4 options for Update Rate

Answer 19

.25s, .5s, 1s, and 2s

Question 20

Mutes all carriers

Answer 20

Quiet Time

Question 21

What options are given when Spectrum Chart maximize is enabled

Answer 21

Shows markers, Heatmap toggle, half life and nTile settings

Question 22

How long does it take before a watch will time out on web version?

Answer 22

20 minutes with a warning to refresh after 19 minutes

Question 23

Heatmap on/off

Answer 23

Shows the accumulation of captures over time, noise is blue hues and signal in grey hues.

Question 24

While in Quiet mode what is not shown in Heatmap

Answer 24

Signal is not shown.

Question 25

Half life

Answer 25

half the value decays within the time period specified by half life. 0’s represents no decay. Also applies to AVG and Min traces.

Question 26

nTile

Answer 26

affects the cutoff percentile for AVG noise and Min traces. Avg noise averages the values >= nTile and Min averages the values <= nTile

Question 27

T/F if a request to transfer watch goes unanswered control goes to requester?

Answer 27

True

Question 28

Watcher drop down

Answer 28

owner of watch, other watchers, count of watchers and names.

Question 29

How often are the the values for the interface updated?

Answer 29

Every 3 secs.

Question 30

Interface info

Answer 30

Shows center frequency and name, live SNR, total corrected and failed FEC counter values.

Question 31

Shows SNR, failed and corrected interface info over time for each carrier.

Answer 31

Signal Quality History

Question 32

Double clicking the y-axis does what in Signal Quality History

Answer 32

Quickly zooms to the extents of the data.

Question 33

Non persistent (I.E. present in a lower percentage of captures) and higher dB than noise

Answer 33

Burst Noise