Upstream TraffiControl Plus

Option for New DSP Family

The Traffic Control Plus feature for the New DSP Family of field analyzers provides a real-time view of the return band for 100% coverage so technicians can see even the shortest cable modem bursts and ingress even under the busiest upstream.

Traffic Control Plus

The Traffic Control Plus feature provides a real time view of the return band for 100% coverage so technicians can see even the shortest cable modem bursts and ingress even under the busiest upstream. While the downstream typically contains signals that are transmitting from the MSO to the customer, the return band is for cable modem signals transmitted from the customer back to the MSO. While the signals in the forward band are constant and easy to detect, the signals in the return tend to be bursty. When attempting to use a standard spectrum analyzer to measure the return band, this bursty nature of upstream signals can cause problems because bursty upstream traffic can be as short as 6.25 microseconds.

If there is enough upstream traffic, standard return spectrum analysis may catch a full channel or it may only catch a single slice of the channel. This makes it very difficult to differentiate traffic signals, noise, and ingress under the traffic when using a standard return spectrum analyzer.

As you can see in Figure 1, the Upstream TraffiControl Plus feature displays the maximum peak (red), maximum constant (green), and average constant (blue) signals that are present in the upstream. Typically the maximum peak signal shows an outline of the upstream carriers while the maximum constant signal shows the noise floor for a bursty signal or some sort of continuous signal and the average constant signal shows the noise floor, ingress under the carrier and other unwanted signals.

Along with the previously described traces, the Traffic Control Plus feature also displays a waterfall graph that uses color to represent the prevalence of a signal and shows the distribution of spectral power which can help technicians find signals hiding beneath the traffic. In the example shown in Figure 2, the colors have been set to a blue, yellow, and red pattern; where the blue section represents the area of the spectrum that the signal was most prevalent, the red indicates the least prevalent signals, and the yellow section are signals that were in the middle.

The prevalence of the signals can be easily adjusted by the technicians to give them a better visual indication as to whether events are occurring frequently, infrequently, or somewhere in between. This normalization value is adjustable from 0.01% to 100% and in Figure 3, normalization is set to 10%. In this case, the blue section shows the most prevalent signal power that was present at least 10% of the time, which was an infrequent presence of modem traffic within the maximum peak envelope of the upstream carriers.

Additionally, Figure 4 shows what a technician might see when there is ingress under a carrier, which has been highlighted as an area of interest using adjustable markers. You can begin to understand the affect this noise is having on the upstream carrier when you compare the signal-to-noise measurements from Figures 3 and 4. The noise that is present under the upstream channel in Figure 4 has severely impacted the signal-to-noise ratio, which would have a negative impact on the quality of service for this channel when compared to the signal without noise shown in Figure 3.

 

Signal Level Meter
Request a Quote
Home Certification Meter
Request a Quote
Business Services Meter
Request a Quote
Maintenance Meter
Request a Quote

Repairs

All repairs carry a 90-day warranty against defects in replacement parts and repair workmanship.

Products

All Trilithic products are warranted against defects in materials or workmanship for a minimum of one year after shipment to the original purchaser.

Trilithic's obligation under this warranty is limited to the repair or replacement of the product after being returned to our factory, and Trilithic determining the product be indeed defective.

This is Trilithic's sole warranty and is given in lieu of all other warranties, expressed or implied, including warranties of merchantability or fitness for a particular purpose and sets forth the buyers sole remedy.

The following products carry a Manufacturer's One Year Warranty

8831Q & 8853Q TLB-GbE
I-Stop TLB-60
MCV-1  

The following products carry a Manufacturer's Two Year Warranty

Ethernet, IP & Wireless Field Analyzers Leakage Equipment Monitoring & Maintenance
802 AWE 120 DSP Seeker Lite² 8310 RSA
MetroNet 5021, 5121 & 5201 180 DSP Seeker 8300 FST & 8300A FST
  360 DSP Seeker D 860 DSPr
  720 DSP Seeker D Lite 860 DSPh & Input Expander
  1G DSP Seeker D Lite Source Transmitter 9581 SST
  860 DSPi Seeker MCA III 9581 TPX
  860 DSP CT-2, CT-3 & CT-4 8380 RPC
    Seeker MCA III RSVP²

The following products carry a Dell Three Year Warranty

All Specially Configured Dell PowerEdge 2U Rack Mount Server products are warranted against defects in materials or workmanship for a minimum of three years after shipment. Dell provides next business day, parts and labor, on-site response for the following Trilithic products.

ADIA Integrated Server Package
Guardian II Integrated Server Package
LAW Server Package
TDM Integrated Server Package
ViewPoint Integrated Server Package

 

Trilithic Broadband Instruments Limited Warranty Terms

Trilithic, Inc. ("Trilithic") warrants to the buyer that the product will be free from defects in materials and workmanship, under normal use, operating conditions and service for a period of one (1) or two (2) years from date of delivery based on the type of product as listed above. Trilithic reserves the right, before having any obligation under this limited warranty, to inspect the damaged product, and all costs of shipping the product to Trilithic for inspection shall be borne solely by the buyer. Trilithic's obligation under this limited warranty shall be limited, at Trilithic's sole option, to replacing or repairing the product, or to replacing or repairing any defective part. F.O.B. Indianapolis, Indiana. If neither of the two options is reasonably available, then Trilithic, in its sole discretion, may provide a prorated refund to the buyer of the purchase price of the product, as evidenced by the proof of purchase, less any applicable service fees in accordance with the following schedule:

Product with two (2) year warranty: months 0-3 = 100%; months 4-12 = 50%; and months 13-24 = 25%.
Product with one (1) year warranty: months 0-1 = 100%; months 2-6 = 50%; and months 7-12 = 25%.

Batteries and fans are not included or covered by the limited warranty. Any product or part that is repaired or replaced under this limited warranty shall be covered only for the remainder of the original warranty period which applied to the original product or part, or for ninety (90) days, whichever is longer. All products or parts that are exchanged for replacement shall become the property of Trilithic.

In order to recover under this limited warranty, buyer must make a written claim to Trilithic within sixty (60) days of the occurrence and must present acceptable proof of original ownership of the product (such as an original receipt, purchase order or similar documentation). In order for this limited warranty to be effective, the product must have been handled and used as set forth in the documentation accompanying the product and/or its packaging. This limited warranty shall not apply to any damage due to accident, misuse, abuse, neglect, fire or other casualty. Further, this limited warranty shall not apply to any product which has been altered or where the damage was caused by a part not supplied by Trilithic. Trilithic retains the final decision whether a product is within warranty conditions.

THE REMEDY SET FORTH HERIN SHALL BE THE ONLY REMEDY AVAILABLE TO THE BUYER AND TO THE FULLEST EXTENT PERMITTED BY LAW, IN NO EVENT SHALL TRILITHIC BE LIABLE FOR ANY SPECIAL, INCIDENTAL, PUNITIVE OR CONSQUENTIAL DAMAGES, INCLUDING BUT NOT LIMITED TO, LOST REVENUES, LOST PROFITS, LOSS OF USE OF SOFTWARE, LOSS OR RECOVERY OF DATA, DOWNTIME, REPLACEMENT EQUIPMENT AND ANY THIRD PART CLAIMS ARISING OUT OF ANY THEORY OF RECOVERY INCLUDING WARRANY, CONTRACT, STATUTORY OR TORT IN CONNECTION WITH THE PRODUCT, EVEN IF TRILITHIC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. NOTWITHSTANDING THE FOREGOING, IN THE EVENT THAT THIS LIMITED WARRANTY FAILS OF ITS ESSENTIAL PURPOSE, IN NO EVENT SHALL TRILITHIC'S ENTIRE LIABILITY TO BUYER EXCEED THE PURCHASE PRICE OF THE DEFECTIVE PRODUCT.

EXCEPT FOR THE LIMITED WARRANTY PROVIDED HEREIN, TO THE FULLEST EXTENT PERMITTED BY LAW, TRILITHIC DISCLAIMS ALL WARRANTIES, EXPRESSED OR IMPLIED (INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE), WITH RESPECT TO THE PRODUCT OR ITS SUITABILITY FOR ANY USE INTENDED FOR IT BY THE BUYER. TO THE EXTENT ANY IMPLIED WARRANTIES MAY NONETHELESS EXIST BY OPERATION OF LAW, ANY SUCH WARRANTIES ARE LIMITED TO THE DURATION OF THIS LIMITED WARRANTY.

This limited warranty is non-transferable. This limited warranty does not affect any other legal rights buyer may have by operation of law. No agent, reseller, distributor or business partner of Trilithic is authorized to modify the terms of this limited warranty on behalf of Trilithic.