Exfo MaxTester 635 Uživatelský manuál stáhnout pdf (Strana 341)

Caractéristiques techniques

Testeur de cuivre et de services multiples VDSL2/ADSL2+ 333

COPPER SPECIFICATIONS

a, b, c

(continued)

Power spectral density (PSD) Test type Continuous with peak-hold

Vertical scale 15 dBm/Hz to –140 dBm/Hz or 20 dBm to –90 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, ADSL2+, VDSL2-8, VDSL2-12, VDSL2-17 and VDSL2-30

Wideband impulse noise Threshold –50 dBm (40 dBrn) to 0 dBm (90 dBrn) in 1 dB steps

Counter maximum 65 000 000

Test duration Maximum 100 hours

Uncertainty (accuracy) (dB) ±2

Noise filters None or E, F, G, ADSL2+, VDSL2-8, VDSL2-12, VDSL2-17 and VDSL2-30

Wideband longitudinal balance Level range (dB) 0 to 50 up to 2.2 MHz

0 to 40 up to 12 MHz

Level resolution (dB) 0.1

Level uncertainty (accuracy) (dB) ±2 (up to 2.2 MHz)

Frequency uncertainty (accuracy) (ppm) ±(50 ppm + 1 digit)

Frequency scale ADSL/2+: 20 kHz to 2.2 MHz

VDSL/VDSL2-12: 20 kHz to 12 MHz

Single-ended frequency response

(attenuation)

Distance range (m) 100 m to 5000 m (300 ft to 16000 ft)

Frequency range (Hz) 4.3 kHz to 30 MHz

Frequency uncertainty (accuracy) ± (50 ppm + 1 digit)

Level uncertainty (accuracy) (dB)

± 2.0 dB typical for 2.2 MHz and 8 MHz ranges

± 3.0 dB for VDSL2-12 and VDSL2-17

± 4.0 dB for VDSL2-30 ranges

Resolution (dB) 0.1

Horizontal scale (MHz) ADSL2+ = 2.208, VDSL2-8, VDSL2-12 = 12, VDSL2-17 = 17.66,

VDSL2-30 = 30

Vertical scale (dB) 0 to +100

Resistive fault location (RFL) Test type Single pair (two wire) and separate good pair (four wire)

Fault detection (M1) 0 to 20

Resolution Three digits

Loop resistance (k1) 10 maximum

Multiple cable sections Five (includes gauge and temperature setting)

Fault location

Total resistance, near-end to fault resistance, fault to strap resistance

(three significant digits, least significant digit 0.1 1)

Total length, distance to fault, distance from fault to strap

(three significant digits, least significant digit 1 m)

Uncertainty (accuracy) ±(0.1 1 + 1 % x RTS)

NOTES

a. Subject to change without notice.

b. Typical, at 23 °C ± 3 °C, on batteries, with no type B USB connection.

c. Specifications based on 24 AWG (PE 0.5 mm) cabling.

d. Specification based on 1 kft 24 AWG cabling. Range depends on cable type and condition.

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