ACT6000 User Guide
– January 2021 Page 18 of 52
Instrument Configuration
(only if
necessary…)
From the
Main Menu
select and enter on
the
“
7. Config & Utility
” menu, then select and
enter on the
“
1. BALANCED LINE TEST
”:
- Verify the selected Cable type from the
Cable Setup menu: Cable Name, Line
Capacitance/km, Conductor Diameter,
PVF (for the TDR) and the Eps relative.
- the Bit/Symb for the right ADSL or
VDSL
*
Bit-Rate evaluation.
- the presumed far-end Noise Floor.
- the Noise Margin for the right ADSL
or VDSL
*
Bit-Rate evaluation.
- the Noise measurement repetition
**
.
- the ETSI or ANSI standard masks.
Note * with the adoption of the EBM30
– ACT-13 optional module.
** Increasing the Noise Repetition test, from 1 (short time) to 60 (long time), the accuracy of
the final RMS Noise measurement will be increased.
To increase the accuracy of the SELT Insertion-Loss is suggested to adjust (before) the
correct copper resistance value (Ohm/km) of the line under test by the R-Set (page 30).
Test configuration
From the
Main Menu
, select and enter the
1.
Line Tests
item, then select and enter on
1.
BALANCED LINE TESTS
, and:
by
F1
key select
1
or
2
Pair
mode.
2 Pairs
performs the NEXT (Near
Cross Talk) measurement.
In this case the tracking reference signal (to
disturb) is available on the TX connector.
By
F3
key
it is possible to select the transmissive measurements related to
the specific mask and threshold limits (with pass/fail indication):
-
VOICE, ISDN
,
HDSL
,
SHDSL
,
E1
and
T1
on Base and Medium
Band referring to the right limited band and single reference frequency i.e. by
Nyquist formula.
-
ADSL
,
ADSL2+,
VDSL2
and
VDSL Plus
on Medium or High Band
(if the EBM30 module is installed)
referring to the right limited band and
frequency marked on 300 kHz for ADSL, 1.1 MHz for ADSL2+, 6 MHz for
VDSL2-12, 8 MHz for VDSL2-17, 15 MHz for VDSL2-30 and 17.5 MHZ for
VDSL Plus.
Automatic SELT start
Push the
F5
“
Start
” key to perform the Single-End-Line-Test sequence.
Warning! During the sequence
don’t manage the line (a-b) or “ground” (c) connections.