Seeker HL (Discontinued)
In-Home Leakage Evaluation Kit
The Seeker HL In-Home Leakage Evaluation System is a low-cost digital leakage solution that includes a dual-frequency tagged signal source, with a selectable output level and a discriminating leakage receiver that is designed to be extremely sensitive to leakage in both the Aeronautical and LTE Frequency Bands.
Easily find & fix the smallest, hardest to find sources of ingress in your plant
- Dual-Band Leakage Receiver for Both Aeronautical and LTE Frequencies
- Sensitivity Up to 0.1 uV/m at 138 MHz and 0.4 uV/m at 757.5 MHz
- Tagged Signal Source Combined with a Discriminating Leakage Receiver
- Audible Tone Increases Proportionally in Pitch as Technician Moves Closer to the Source of Leakage
Overview
Mitigation of signal leakage within the subscriber premise is essential for the successful operation of the subscriber’s cable and cellular services. To thoroughly evaluate the potential for interference to subscriber services, VIAVI has developed a patent pending approach to signal leakage measurement which will comprehensively test the Aeronautical and LTE bands in both fully digital and analog cable systems.
Historically, signal leakage detectors have required high levels of sensitivity to measure signal leakage radiating from the CATV system. Measurement within the subscriber premise and the migration to all digital services places even greater sensitivity requirements upon the leakage detector combined with a new requirement to simultaneously monitor for signal leakage in both the aeronautical and LTE bands.
In laboratory experiments signal leakage measurements as low as 0.1 uV/m have proven sufficient to allow LTE signals to enter the subscriber network and disrupt cable services. Achieving a measurement sensitivity of 0.1 uV/m is beyond the measurement range of conventional signal leakage detectors and requires a new approach to leakage detection within the subscriber premise.
Testing Approach
To meet the new measurement and sensitivity requirements, the Seeker Home monitors 138 MHz and 757.5 MHz simultaneously, supporting testing in both the Aeronautical and LTE frequency bands. The Seeker Home Signal Source replaces the Cable service with two high output test carriers which pressurize the subscriber cabling revealing any damage which may lead to service interruption from ingressing LTE carriers.
The Seeker Home Signal Source has two output levels. A +60 dBmV for home certification and a +40 dBmV output level should the subscriber network prove too porous for pinpointing the location of a leak at the higher transmit level.
The displayed leakage levels are normalized by the Seeker Home receiver to reflect the value of the leak at nominal systems levels within the subscriber premise. The normalization of the measured and displayed leakage levels simplifies the evaluation of leakage severity and provides consistency for documentation of leakage levels in accordance with established industry practices.
When utilizing the higher +60 dBmV transmit level the Seeker Home is able to locate signal leakage down to a normalized leakage level of .1 uV/m with a single flexible antenna; making it possible to locate and repair signal leakage levels far beyond the measurement range of conventional leakage detectors.
Advanced In-Home Shielding Integrity Testing
Until recently finding and fixing leakage in the aeronautical band was considered “good enough” for almost all cable operators. But, with increased deployment of off air services by cellular providers and increased bandwidth demands of both the MSOs and cellular providers, keeping the cable plant tight has never been more important. Additionally, the increase in service demands for cellular bandwidth has pushed services into the 700-800 MHz (LTE) band and maybe even lower into the 600 MHz band in the near future.
Up until now leakage detection has focused on the outside plant, but as cellular devices become more prevalent we need to somehow verify if these devices are causing harmful interference when they are in close proximity to leakage or ingress sources within a home. Since the relative distance between a cell tower and cellular devices determines the transmit level of cellular devices, this can results in cellular devices transmitting their data with a signal strength as high as 3 V/m. Due to this possibility of high transmit level of cellular devices, even the smallest sources of leakage or ingress points within the home can lead to cellular signals causing issues with downstream QAM channels. With this problem in mind, VIAVI has developed the Seeker HL In-Home Leakage Evaluation System as a solution for finding the smallest of leaks in the home and to help identify any shielding defects that will allow cellular signals to enter into the cable system.
During an installation or service call, the Seeker HL In-Home Leakage Evaluation System provides technicians with a way to comprehensively evaluate the customer premises for leakage in both the Aeronautical and LTE bands within fully digital, analog and mixed cable systems and is the only system available to quickly, easily and accurately verify that the shielding integrity of in home wiring meets the needs of today’s high tech world.
This innovative, patent-pending method of in home leakage detection involves using the Seeker HL Source Transmitter to replace the cable service at the subscriber’s ground block. The higher levels of the Seeker HL Source Transmitter will increase the field strength of the signals radiating out of the customer’s home network, providing a higher level of sensitivity to find even the smallest of leaks.
The transmitter injects two single CW carriers into the subscriber network with a 20 Hz tag modulation, one inserted at 138 MHz and another at 757.5 MHz supporting testing in both the Aeronautical and LTE bands. The source transmitter signal level is at considerably higher level than typical active plant levels in order to “over-pressurize” the cable system in the home. This approach is similar to pressurizing a water pipe and looking for any sources of water that may point to the location of a defect in the pipe. Using the Seeker HL with its source transmitter allows the technician to detect leakage levels at an otherwise unheard of sensitivity down to 0.1 uV/m. The user may set the output level to 60 dBmV for home certification, but also has the option to reduce the level to 40 dBmV should the subscriber network prove to be too porous for pinpointing the location of a leak at the higher transmit level.
The Seeker HL provides both a visual readout of the measured levels in uV/m and a tone proportional to signal strength. To prevent false triggering the Seeker HL utilizes our unique channel tagging technique. When checking the integrity of in-home shielding and to provide consistency with leakage levels typically found within the subscriber premise, the levels displayed by the Seeker HL have been normalized to represent the value of a leak at typical system levels. This correlation between measured and displayed levels will assist the technician in evaluating the severity and recording of a leak based upon established industry practices.
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Instrument Care Support Plans
Save up the 50% of standard service prices and obtain priority service when you buy a bundled plan at the same time the instrument is purchased. Care Support Plans offer the best way to purchase extended warranty, premium technical support, self-paced training, and critical maintenance services like calibration services that include software and engineering change order update services to ensure your product is maintained with current software and a calibration certificate. These discounted plans are 2-5 years long when purchased upfront with your VIAVI instruments.
VIAVI Care Support
Care 支持计划 - Seeker
产品类型 | 推荐计划 | BronzeCare![]() | SilverCare![]() | MaxCare![]() | 为什么要校准? |
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Seeker D,Seeker X | MaxCare-5 | 为什么要校准这个产品?频率/电平需要在规范范围内,以保证准确可靠的结果。 Factory standards to ensure accuracy确保准确性的工厂标准VIAVI 根据 TL9000 工厂标准进行校准,以确保您的仪器经过认证,可以准确测量,就像它出厂时一样。未校准的仪器将产生不可靠的测量结果,并可能产生错误的通过或错误的不通过测试结果,这通常会导致您的团队重复工作。我们维护、抛光和清洁所有光纤连接器,修复产品内部的尾纤连接,以确保所有端口保持良好工作状态,并将软件/固件升级到最新批准版本以实现增强功能。VIAVI Care 计划是在购买仪器时以较低的折扣价规划校准的最具成本效益的方式,但是也可以随后以单独的采购订单购买固定费率校准。
如果产品不在校准范围内,我的测量结果会受到怎样的影响?超出规格的测量可能会导致不必要的重复呼叫客户服务问题 What are the most common implications of these issues to the business?这些问题对企业最常见的影响是什么?
常见的业务影响包括:
示例: 让我们看看 OTN/SONET/SDH/E1/T1 和各种 FTTX、DOCIS 和 xDSL 测量。达到全线速率(1G、10G、40G、100G)对测试服务性能和服务错误率至关重要。如果未校准的测试仪在测试过程中无法达到全线速率,客户可能会得到性能不佳的结果,这将很快引起投诉,或者,技术人员最终可能会寻找不存在的虚假网络问题。 |
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