990DSL
Users Guide
1-4
• Continuous test result mode with large numerals and a relative-change
scale for marking and recording peak signal excursions
• Remote control operation and program download capability through a
serial port
• Test result storage and printout
• User-settable fault limits with industry-standard defaults.
• Test result upload in either column or tab-delimited format (for direct
import to spreadsheet program)
Testing Features
• Integrated far-end-device control for automated, terminated testing
• Double-ended “same-pair testing” capability (requires no control pair)
• AC/DC Voltage, Shorts & Grounds, Opens, Leakage, and Resistance
Fault Location (RFL) physical tests
• Load Coil, Noise, Loss, SNR, and Longitudinal Balance transmission tests
• Impulse Noise test with E, F, and G filters
• Voiceband (0 – 20 kHz), Wideband (10 kHz – 1.2 MHz), and Broadband
(1.2MHz – 20 MHz) transmission tests
• PSD mask overlays that depict crosstalk patterns for common types of
interference
• Quick, Single-ended ADSL DSLAM / modem verification, with data rate
prediction
• Single-ended ADSL/2/2+ DSLAM Line test (requires 990-GM/2 ADSL2+
Golden Modem appliqué).
• Single-ended VDSL DSLAM Line test (requires 990-GM/V VDSL
Golden Modem appliqué)