Helios systems 

System advantages

  • Checked against certified ISO 17025 standards
  • High accuracy
  • Fast measurements
  • Automatic calibration
  • Easy to operate
  • State of the art software package
  • Designed to measure all types of telecom cables
  • Highly modular to fit any requirement

Can be upgraded with many options such as:

  • ADDM database system
  • ISO 17025 certified HF calibration standards
  • ISO 17025 certified LF calibration standards
  • Technical software licenses

Specifications for Low Frequency parameter testing

Description

Designation for pairs

Designation for quads

Accuracy

Scale

Conductor resistance

Ra, Rb

Ra, Rb
Rc, Rd

± 0.1% + 10 mΩ

0 - 19'999 kΩ

Loop resistance

R

R1, R2

Resistance unbalance

DR

DR1, DR2, DR3

Computed

%, Ω

Capacitance

C

C1, C2, C3

± 0.25% ± 10pF at 800 Hz
± 0.25% ± 10pF at 125 Hz
± 0.25% ± 50pF at 12.5Hz

0 ± 2,000nF

Capacitance unbalance

K

K1 ± K12

± 1% ± 6pF at 800 Hz
± 1% ± 3pF at 125 Hz
± 1% ± 30pF at 12.5 Hz

Capacitance unbalance to ground

Ei, Ea, E

Ei1-Ei3
Ea1-Ea3
E1-E3

Specifications for high frequency parameter testing

Attenuation (corrected at 20°C)

Accuracy

1 kHz - 30 kHz

30 kHz - 100 kHz

100 kHz - 2 MHz

2 MHz - 10 MHz

-30 dB to -80 dB

± 0.8 dB

± 1 dB

± 1.5 dB

± 2 dB

-10 dB to -30 dB

± 0.6 dB

± 0.8 dB

± 1.2 dB

± 1.5 dB

0 dB to -10 dB

± 0.2 dB

± 0.3 dB

± 0.4 dB

± 0.7 dB

 

Near-End Crosstalk NEXT & Far-End Crosstalk FEXT

Accuracy

1 kHz - 30 kHz

30 kHz - 100 kHz

100 kHz - 2 MHz

2 MHz - 10 MHz

-70 dB to -100 dB

± 2.5 dB

± 3 dB

± 3.5 dB

± 4 dB

-40 dB to -70 dB

± 1.5 dB

± 1.8 dB

± 2 dB

± 3 dB

-10 dB to -40 dB

± 1 dB

± 1.2 dB

± 1 dB

± 1.2 dB

 

Impedance (open/short and terminated 100Ω)

Accuracy

1 kHz - 100 kHz

100 kHz - 10 MHz

85Ω - 135Ω

± 2%

± 1.5%

75Ω - 155Ω

± 3%

± 4%

Calculated HF Parameters

  • Fitted Impedance
  • Return Loss (RL) (Open/Short and Terminated 100?) (fully complex method)
  • NEXT Worst Case, Power Sum, Power Sum Worst Case
  • FEXT Worst Case, Power Sum
  • Individual ACR, ACR Worst Case, Power Sum ACR
  • Global Power Sum (NEXT + FEXT)
  • ELFEXT Pair to Pair, Worst Case, Power Sum, Power Sum Worst Case
  • Velocity of Propagation (VOP)
  • Propagation Delay (Phase Delay), Group Delay, Delay Skew

Statistical HF means (pair)

  • Maximum value, absolute maximum value
  • Minimum value, absolute minimum value
  • Mean value, absolute mean value
  • Standard deviation, standard deviation (n-1)
  • Mean standard deviation
  • Quadratic mean
  • Minimum margin, mean margin

Statistical HF means (cable)

  • Minimum and maximum value for the cable
  • Frequency for minimum or maximum values
  • Pair for minimum or maximum values
  • Minimum margin to the limit for the cable
  • Frequency of minimum cable margin
  • Value for minimum cable margin
  • Mean of the minimum margin for each pair