6100-Gfast Multifunction Network Analyzer Operation Manual
82
© 2020 Radiodetection Ltd
Estimated Length
displays the cable length
when the cable is open.
Note: The cable length may include the Bridge Tap
length: remove the Bridge Tap for better
accuracy.
Fault Status
displays the number of faults
detected (or
No fault detected
) after running
the test. The status
Open
detected
is reported
in the following case:
o
No strap.
o
The pair is open.
o
No faults (other than the pair being
open).
Open and the distance to Open is displayed
and represented using X in the graph.
Test Status
displays the current state of
measurement or an error message.
To select the parameter values:
1. Press the up/down arrow keys to highlight the
desired parameter.
2. Press the left/right arrow keys to view and
select the options.
OR
3. Press
on a value to open a list box of
options.
4. Press
to confirm the value.
Cable Setup
The
Cable Setup
page allows you to set the C
able
Type, Cable Length,
and
Cable Temperature
for the
FaultMapper test. All other
Cable Parameters
are read
only and correspond to the current cable book entry as
selected in
Setup/Cable Book/Cable Details
page.
These cable parameters affect distance calculations of
Capacitance/Opens
and
Resistance
measurements,
and the
TDR
cursor distance indication.
Cable Type
displays the ID, Cable Name and
Fill, and allows you to select an entry (with its
associated parameters) from the current Cable
Book, to use for testing. The selection is not
saved when leaving the test. The current Cable
Book entry is shown by default.
Cable Gauge
identifies the gauge system for
measuring wire sizes, in AWG (American Wire
Gauge) units or mm (metric wire size).
Cable Fill
read-only entry is the type of
material the cable is filled with:
Aircore, Jelly,
Pulp, 5 PR
, or
2 PR
.
Capacitance T-R/A-B
read-only entry is a
value for the capacitance per length constant
used to calculate distance to opens.
Capacitance T/R to GND/A/B to E
read-only
entry is a value for the capacitance per length
to ground constant.
Attenuation @ 300 kHz
read-only entry is a
value in dB for the reduction in signal strength
or insertion loss of the cable at a frequency of
300 kHz. (This frequency has been widely used
as a loss measurement for ADSL, but not
validated for ADSL2+ nor VDSL2.)
Velocity of Propagation
read-only entry is the
velocity of propagation for the cable. This value
is used to convert the timed TDR pulses into a
distance for the cursor position.
Resistance
read-only entry is a value for the
resistance constant of the cable.
Cable Length
allows you to set the length of
the cable for more accurate results.
