EXFO VDSL2 - Manual (Page 266)

Technical Specifications
258 AXS-200/635i
POWER SPECTRAL DENSITY (PSD) NOISE MEASUREMENT
Test type Continuous or peak-hold
Vertical scale –10 dBm/Hz to –145 dBm/Hz or +20 dBm to –110 dBm
Horizontal scale 4.3125 kHz to 17 MHz, in 4.3125 kHz steps or 8.625 kHz to 30 MHz, in 8.625 kHz steps
Noise filters None or E, F, G, VDSL2-8, VDSL2-12, VDSL2-17 and VDSL2-30
DSL IMPULSE NOISE MEASUREMENT
Threshold –50 dBm (40 dBrn) to 0 dBm (90 dBrn) in 1 dB steps
Counter Maximum 65 000
Test duration 1, 5, 10, 15 and 60 min, 24 h or continuous (up to 360 h)
Histogram plot interval 1, 5, 10, 15 or 60 min
Uncertainty (accuracy) (dB) ±2
SWEPT LONGITUDINAL BALANCE TEST
Frequency uncertainty (accuracy) (ppm) ±50
Level uncertainty (accuracy)(dB) ±2.0
Vertical scale (dB) 0 to 80.0 up to 2.2 MHz
0 to 60.0 up to 30 MHz
Horizontal scale ADSL/2+: 26 kHz to 2.2 MHz
SHDSL: 26 kHz to 1 MHz
VDSL/VDSL2-12: 26 kHz to 12 MHz
VDSL2-17: 26 kHz to 17.66 MHz
VDSL2-30: 26 kHz to 30 MHz
DIGITAL MULTIMETER (DMM)
Measurement Range Resolution Uncertainty (accuracy)
DC voltage 0 to 200 V 1 V the better of ±2 % or ±1 V
AC voltage 0 to 140 Vrms 1 V the better of ±2 % or ±1 V
Isolation resistance 0 to 999 M Ÿ 3 digits
0 to 999 Ÿ the better of ±2 % or ±5 Ÿ
1 k Ÿ to 99 MŸ ±(2 % + 1 digit)
100 M Ÿ to 999 MŸ ±(5 % + 1 digit)
Distance up to 30 000 m (100 000 ft)
Resistance 0 to 30 M Ÿ 3 digits
0 to 999 Ÿ the better of ±2 % or ±5 Ÿ
1 k Ÿ to 30 MŸ ±(2 % + 1 digit)
Distance up to 30 000 m (100 000 ft)
Capacitance 1 nF to 10 —F 3 digits ±(2 % + 1 digit)
Distance up to 30 000 m (100 000 ft)
DC current 0 to 110 mA 1 mA ±(2 % + 1 digit)
AC current 0 to 77 mA 1 mA ±(2 % + 1 digit)
SPECTRAL DETECTIVE
Allows the AXS-200/635 to bridge (high-impedance) onto a live circuit to display a plot of transmitted levels and spectrum (PSD). The Spectral Detective test can be
referenced to any user-selected impedance. The impedance reference setting is required to display proper readings in dBm/Hz or dBm.
Test type
Continuous or peak-hold
Bridging impedance 15 k Ÿ
Vertical scale –10 to –145 dBm/Hz or +20 to –110 dBm
Horizontal scale 4.3125 kHz to 17 MHz, in 4.3125 kHz steps or 8.625 kHz to 30 MHz, in 8.625 kHz steps
Noise filters None or E, F, G, VDSL2-8, VDSL2-12, VDSL2-17 and VDSL2-30
STRESS/LEAKAGE (ISOLATION RESISTANCE)
Source 100 VDC, current safely limited to <1.0 mA
Range (M Ÿ) 0 to 999 auto-ranging
Resolution 3 significant digits
Uncertainty (accuracy) 0 to 999 Ÿ, the better of ±2 % or ±5 Ÿ
1 k Ÿ to 99 MŸ, ±(2 % + 1 digit)
100 M Ÿ to 999 MŸ, ±(5 % + 1 digit)
Soak timer (s) 1 to 99
RESISTIVE FAULT LOCATION (RFL)
Test type Single pair and separate good pair
Fault detection (M Ÿ) 0 to 20
Resolution 3 digits
Loop resistance (k Ÿ 7 maximum
Multiple cable sections Five (includes gauge and temperature setting)
Fault location *Total resistance, near-end to fault resistance, fault to strap resistance (four significant digits)
*Total length, distance to fault, distance from fault to strap (3 ft/1 m resolution)
Uncertainty (accuracy) The better of 0.2 Ÿor ±2 %