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Extensive testing shows that one of the main challenges to successfully
offering new, digitally based services is the existing wiring in the customers
home. Digital services, including audio, video, Internet, and telephony are less
tolerant than traditional analog services of frequency response problems,
reflections, group delay, and ingress caused by inferior componetry or poor
craftsmanship. Will the existing wiring deliver the quality the customer
demands? Should the network provider or homeowner plan to rewire when digital
services are activated? You need tools to help answer these questions quickly
and accurately because replacing wiring makes new service activation costs high,
often limiting the acceptance of new services.
The Acterna CLI-1750, used in conjunction with the Model LST-1700 Signal
Transmitter, helps identify and locate potential problems with the distribution
network and home wiring prior to activating these new services. The Wavetek /
Acterna CLI-1750 and Acterna / JDSU LST-1700 are compact home wiring testers
capable of measuring not only routine power levels, but also digital average
power, leakage,frequency domain reflectometry (FDR), and sweep, which can be
useful for a wide range of trouble shooting from installation to characterizing
existing wire. The instruments superior user interface and performance can
reduce the installation time and repair cost.
Highlights:
* Complete solution for installers eliminating the need
for multiple meters or testers.
* Combination signal level meter,
leakage meter, and home wiring tester.
* Easy-to-use, portable, and
economical.
* Comprehensive tests to verify the quality of an
installation.
* Icon-based user interface for ease of operation in all
languages.
Applications:
* Signal levels are checked to verify proper levels
arriving at the tap and at the house.
* Frequency response is measured
to verify proper losses and to uncover any roll-off or sharp changes in
response.
* Frequency Domain Reflectometry test (FDR) reveals precise
location of sources of reflections and degree of severity.
* Reverse
Ingress Scan test shows the presence of noise, or ingress, generated in the
house that hampers reverse communication for all customers sharing the node.
* Leakage test finds potential points of ingress, as the source may
not be in operation while the installer is at the house.
Features:
* Signal Scan mode shows all channel levels at once.
* DigiCheck(TM) digital signal average power measurement option.
* Sweep and FDR mode finds cable, component, and craftsmanship-related
faults.
* Frequency agile leakage detection and measurement.
* Pass/fail check ensures FCC compliance and reduces subscriber
call-backs.
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CLI-1750 Specifications
Frequency Range 5 to 890 MHz
Accuracy 10 ppm @ 25C (77F); 20 ppm
over temp
Tuning Resolution 25 kHz
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Level Measurement
Range -20 to +50 dBmV
Resolution 0.1 dB
Accuracy 0.75 dB Flatness,
0.75 dB Linearity @ 25C (77F)
Digital Average Power (optional) 2.0 dB
(typical)
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Scan Mode
Number of Channels 120
Scan Rate Approximately 6 carriers/second
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Leakage Mode
Level Measurement
Input Sensitivity (with HD-1 dipole or VMA-3 mag
mount)
Video Detection From 1 V with LT1000 Leakage Tagger activated (121 to
133.2625 MHz).
CW Detection From 0.5 V typical with LT1000 Leakage Tagger
activated (121 to 133.2625 MHz).
Measurement From 1.4 V (115 to 140 MHz).
Range 0.5 to 2,000 V (at input connector)
Accuracy
Measurement 1.5 dB @ 25C (77F)
Find & Fix 2.25 dB @ 25C (77F)
Tuning Carrier
Frequency Range 115 to 140 MHz range
(Video)
Accuracy 10 ppm @ 25C (77F); 20 ppm over temp
Resolution 25 kHz
Tagger modulation for leakage Modulation frequency 5 to 25 Hz
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Operating
Temp. Range -10 to +50C (14 to 122F); 3 dB drift, -10 to +50C
Water
Resistance Meets or exceeds MIL-STD-810D (Method 506.2)
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