The CM Sweep feature (patent pending) for the New DSP family of field analyzers allows the cable modem to launch bonded upstream carriers back to the CMTS for use as in-band sweep points. This gives the operator the ability to finally sweep inside their upstream modem channels and look for potential gain and tilt issues that otherwise may be hiding.
In the past operators have always relied on out-of-band sweep carriers injected within their upstream for sweeping the return band. Until now, performing in-band sweep would require injecting sweep carriers into the channels where your modems are present, but that would incapacitate any active modems trying to reach the headend. As upstream bandwidth continues to fill, operators are now reducing the number of upstream sweep carriers, which severely affects the resolution of their return sweep frequency response.
So, how does the operator properly sweep the upstream, especially if there is no room to insert their sweep carriers? Trilithic’s answer to this question is our Cable Modem (CM) Sweep with Modem Quality of Service (MQS) measurements designed so technicians can quickly and easily assess the quality of your upstream channels. The CM Sweep feature allows the cable modem to launch bonded upstream carriers back to the CMTS for use as in-band sweep points. This gives the operator the ability to finally sweep inside their upstream modem channels and look for potential gain and tilt issues that otherwise may be hiding.
In short, this style of sweep transmission also looks at a new metric called Modem Quality of Service (MQS), which allows the operator to see the quality of both each individual upstream channel and all upstream carriers. The higher that the MQS score is indicates that the equalizer is working harder due to upstream impairments in the path of the cable modem. A value of less than 1 dB for your MQS score is considered excellent, while more severe impairments could lead to scores as high as 6 dB.
Figure 1 shows an example of a raw CM sweep trace that allows the operator to identify impairments before the reference measurement has been applied. By using CM Sweep in this manner, it allows technicians to see the modem transmit levels across the upstream bandwidth. But more importantly, this gives technicians the ability to see potential impairments within the upstream before a reference measurement is applied. This allows technicians to fix these impairments and then save a reference at the node. The technician can then bring up this reference for comparison to any point in the system, such as the next active amplifier.
Figure 2 shows an example of the CM Sweep trace once a reference is applied, which provides technicians with the ability to see the gain and tilt across the band based on the marker settings. Using a reference also allows the user to see their individual channel MQS scores and the overall MQS score of all of the cable modem channels in the upstream. At a quick glance, the technician is able to see the overall health of the upstream channels, which tell the operator how all the upstream channels are performing, so decisions can be made to either save the reference and move on, or look deeper into the individual carriers.
All repairs carry a 90-day warranty against defects in replacement parts and repair workmanship.
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.
|120 DSP||180 DSP|
|Field Analyzers||Leakage Equipment||Monitoring & Maintenance|
|360 DSP||Seeker Lite²||8310 RSA|
|720 DSP||Seeker||8300A FST|
|1G DSP||Seeker D||860 DSPh & 860 DSPh Input Expander|
|RSVP²||Seeker D Lite & Seeker D Lite Source Transmitter||9581 SST|
|Seeker HL & Seeker HL Source Transmitter||8380 RPC|
|Seeker MCA III|
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.
|LAW Server Package|
|ViewPoint Integrated Server Package|
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.