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Page I-11
120 DSP Operation Manual
Basic Signal Level Meter
120
Standard Testing Features
• Return Spectrum Analysis (4 to 110 MHz)
• Level Measurement
• C/N Measurement
• QAM Measurement (MER/BER/Constellation/EQ)
• Complete Channel Plan Scan with Tilt Measurement
• Network Test Suite with Ping, Traceroute, & Throughput Measurements
Standard Interfaces
• RF Test Port (F-Type, Replaceable)
• RJ45 Management Port (10/100 Mbps)
• Mini-USB Type B Female Charge & Data Port
HUM Measurement
The HUM measurement function is used to troubleshoot interference that may result from
a defective power supply or faulty or overloaded power inserters. This function enables
the 120 DSP to measure the amplitude of the 50/60 Hz, 100/120 Hz, and low frequency
interference (HUM) present on the video/QAM carrier of a single selected analog or digital
channel.
User-Defined Autotests
A significant time and cost savings feature of the 120 DSP is the capability to group tests
into automatic tests that can be executed with a single keystroke. Several Autotests can be
stored in the meter and recalled as needed. These may include Level, Tilt, Spectrum, Hum,
and Limit tests.
Limit Testing
Limit test data allows for test uniformity and flexible field storage, and may be automatically
scored against specified limits and assembled into reports.
Содержание 120 DSP
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