Tescom ACT6000 - DC CAPACITANCE; AC CAPACITANCE and Q factor; LINE LENGTH BY CAPACITANCE; LINE IMPEDANCE RESPONSE

ACT6000 User Guide – January 2021 Page 12 of 52
- Accuracy of RTF @ 1 M. .....: 0.5% of Loop resistance.
DC CAPACITANCE (time of DC discharge method)
- Test Voltage ...........................:  100 Vdc.
- Range / Accuracy ..................: > 10 nF  10 F /  5% of reading  1 digit.
AC CAPACITANCE and Q factor (by capacitive bridge)
Measuring mode.......................: by 1 kHz tone – 1.1 Vpp between: a-b;.
Range / Resolution ...................: 0.1 to 3000 nF / 0.1 nF.
Accuracy ..................................: ±1% of reading ± 1 nF @ C <500 nF;
±5% of reading ± 1 digit @ C >500 nF and < 3000 nF.
LINE LENGTH BY CAPACITANCE
Line length estimation ...............: (as function of measured capacitance):
Line Capacitance setup ............: 10.0 to 300.0 pF / Length Unit.
Range / Resolution / Accuracy ..: 1 to 99999 Units (m. or ft.) / as from capacitance meas.
LINE IMPEDANCE RESPONSE
Measuring range ...................: from 30 to 3200 Ohm in five steps.
Frequency Range ..................: from 5 kHz to 5 MHz in four steps.
Accuracy ...............................: ±5 % ±5 Ω.
· POTS Subscriber Simulator (by optional module ACT-11 installed on DMM module)
Dial Encoder ............................: · Pulse, progr. duration/ratio (100 ms / 40/60%);
· DTMF std. tones, progr. Level, Duration, Inter-tone.
Ring Detect. Range & Meas ......: Level: 10 ÷ 90 Vrms; Frequency: 15 ÷ 70 Hz.
Ring Detector AC Load .............: R 7310 Ω ± 2% in series + 940nF ±10% capacitor.
Ring current self limitation ........: ≤ 15 mA peak ; safety fold-back limited.
On Hook / Break & Make specs.: R = 120 Ω ±2% @ I = 100 mA; Voffset = 4 Vdc.
Automatic pre-configured SELTest sequence for line pre-qualification *
With single ACT6000 - Single-End Tests on open line, 2 or [4] Wire mode:
Metallics: AC / DC Voltage, DC Insulation, AC / DC Capacitance, Q, End-Of-Line (TDR).
Transmissive (wide band / spectral): Noise (local), Return-Loss, Longitudinal Balance-
Loss, “FDR” Insertion-loss & frequency response estimation, Noise (far-end estimation),
[NEXT], and SNR prediction, Bit-Rate prediction for ADSL - ADSL2+ - VDSL2 and VDSL
Plus** masks.
Manual pre-configured SELTest *
Transmissive (wide band / spectral readout) measurements:
Noise, Return-Loss, Longitudinal Balance-Loss, NEXT and PSD (sniffer mode).
* by Advanced Software ASW-1/II;
** by adoption of EBM 30 (ACT-13) optional module;
Automatic pre-configured DELTest sequence for line qualification & certification *
With two ACT6000 (Master/Slave mode) for End-to-End Tests, 2 or [4] Wire mode:
Only Transmissive (wide band / spectral): Noise (bilateral), Return-Loss (bilateral),
Longitudinal Balance-Loss (bilateral “LCTL”), Insertion-Loss, [NEXT and FEXT] and Bit-