Equipment information

Wavetek Wandel Goltermann CLI-1450 Indicateur de niveau


INTRODUCTION The CLI-1450 Leakage/Signal Level Meter is a high performance instrument designed for cable television technicians. The durable, water-resistant CLI-1450 makes innovative use of a graphics LCD to simplify operation. The LCD backlight makes measurements easier in crawl spaces and behind television sets. The display is also easy to see in bright sunlight. LEAKAGE DETECTION AND MEASUREMENT Your CLI-1450 is a highly sensitive, hand-held leakage meter that makes finding and measuring RF leakage easy. Because it can accurately detect and measure video signals, it is not necessary to inject an additional RF carrier for the purpose of monitoring leakage. Your CLI-1450 is frequency agile — you can configure it to monitor a carrier frequency between 115 to 140 MHz. You can use the optional LT1000 Leakage Tagger to modulate an existing carrier with a distinct tag signal. This enhances detection sensitivity in noisy environments and reduces false alarms. In overbuild situations, you can determine if a detected leak is emanating from the network that you are testing. An audible alarm notifies you when your CLI-1450 has detected a leak. You specify the level threshold at which the alarm is triggered. To reduce the likelihood of false alarms, you can configure the alarm to occur only when a tag signal is present. You can quickly adjust the volume of the alarm and even mute it if desired. Your CLI-1450 makes the accurate leakage measurements that you need to verify compliance with government regulations. The type of antenna you are using and the distance from the leak are considered when measuring field strength. You can select from among four antenna types — monopole, dipole, vehicle mount and custom. The antenna factor for each type is programmable. The most accurate and repeatable measurements are made using a dipole antenna located at the required reference distance. This is the only method recommended by Wavetek Wandel Goltermann for making compliance measurements. You can also make approximate measurements up to 30 meters away by entering the estimated distance from the leak. Your CLI-1450 will calculate what the equivalent field strength would be at the reference distance. These measurements are adequate for grading leaks you have found and prioritizing your repair schedule based on leak severity. The CLI-1450 has the ability to Interface with GPS tracking systems using its built-in serial port. LEVEL MEASUREMENTS Your CLI-1450 performs accurate signal level measurements — even on scrambled channels with horizontal or vertical sync suppression. A scan mode allows you to see the levels of all carriers in a spectral display. You can also view level measurements at a single frequency or for a specific channel. When tuned to a channel, the display indicates the levels of the video and audio carriers, and the difference between the carrier levels. When performing an installation, you can press the Installation Check key to quickly verify that all channels are within limits that you have defined. You can use this feature to determine whether or not a subscriber connection meets government regulations. A special channel plan building mode automatically determines which channels are active on your cable system. Once you have defined a channel plan, you can copy it to other units. You can also create channel plans using StealthWare (Version 3.0), the WindowsTM based data management package for Stealth products. For documentation purposes, you can print any measurement screen to a serial printer (Wavetek P-Stealth Printer). Following an installation check, you can print an installation report and file it with the work order. You can also print a report that lists all configuration settings including the channel plan. The CLI-1450 tunes from 45 to 559 MHz with options to extend the range to 5 to 890 MHz. DIGITAL CARRIER MEASUREMENT OPTION 1450DIG As digital services such as audio, video, Internet, and telephony become more common, a way of accurately measuring their carriers is needed. The 1450DIG digital carrier measurement option provides an average power measurement of QPSK, 16-QAM, 64-QAM, 256-QAM, QPR, BPSK, CAP-16, and other modulation schemes. To be measured, carriers must be in a state of continuous (i.e., non-burst) transmission. MEASUREMENT LOGGING (signal level modes only) With the CLI-1450, you can store installation checks that you have performed throughout the day. You can also store scan and tilt measurements. Each file is time and date stamped and can be recalled later for viewing on the LCD screen. When viewing a file, you can adjust the screen settings the same as when you are viewing a “live” measurement. Using the built-in serial port, you can print files and even upload them to StealthWare (Version 3.0) for further analysis and archiving. AUTO TESTS (signal level modes only) Automated tests are easy with the CLI-1450 and provide a convenient way of acquiring proof-of-performance compliance data. Tests can beexecuted immediately or scheduled over a period of time. To conserve battery life, CLI-1450 shuts itself off between scheduled intervals. When configuring an Auto Test, you can record information about the location at which the test is being performed. Files can be created for commonly tested locations so you need only enter the information once. Auto Tests results are time, date, and temperature stamped and can be viewed on the LCD screen. Limits are applied to the measurement data with out-of-tolerance conditions concisely indicated. You can print a test report for each interval or a comprehensive 24 hour report that summarizes data collected from up to four intervals. Auto Test result files can be uploaded to StealthWare (Version 3.0).

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Manuel de l'utilisateur
Manual type:
Manuel de l'utilisateur
1,019.83 Kbytes (1044310 Bytes)
01 November 1999
Électronique de documents, numérisation sans, bien lisible.
Upload date:
16 August 2018

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