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Q. How do I test cables with BNC connectors?
A. The F-jack to BNC jack allows you to easily test coax cables that have
been terminated with BNC connectors.
Q. Why are the length wrong and split errors on all my cable drops?
A. This issue is most common when punching down cables to a patch
panel. Some patch panels reroute continuity through PCB boards, have LED's
connected to a pair to identify the presence of traffic, or noise isolators.
These features will change the cable characteristics and affect the test
results.
Q. What is SNR, and how is it measured?
A. The Signal to Noise Ratio is performed by measuring the signal generated
by the far end (active remote/switch). The far end device transmits Ethernet
signals by which the Net Chaser measures the quality of the Ethernet
signals. If the signal jitter is outside the Ethernet spectrum, it affects the
quality of the signal, which is identified as an SNR dB measurement. The Net
Chaser will fail the cable if the SNR is below 20dB.
Q. What is SKEW?
A. SKEW is the signal delay between pairs. Excessive delay can cause
data to be received in the incorrect order, negatively impacting network
performance.
Q. What is BERT, and how is does it work?
A. BERT stands for Bit Error Rate Test. The Net Chaser generates data
packets equaling up to 10 Gigabytes, then sends the data packets to the
Active Remote at 1Gbps. The active remote receives and returns the same
data to the Net Chaser. This test ensures successful data transmission at
maximum data rate for 1 Gig. The Chaser will fail the cable if there are more
than 3 BERT Errors.
Q. Is the Net Chaser Windows 10 compatible?
A. The Net Chaser USB interface is currently not compatible with Windows
10. Windows 10 compatibility will be included in a future update. If using a
Windows 10 computer, you can remove the SD Card from the Net Chaser
and plug it directly into your computer for Firmware updates, loading
a Company Logo, and loading test results to and from your PC. If your
computer does not have an SD Card slot, you can use a USB SD Card reader.
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Q. Can I purchase additional active remotes?
A. Yes, the Net Chaser Active Remote TAR104 has selectable ID's (#1-#4)
so users can have up to 4 remotes with different ID's.
Q. Why does the Cable Test shows that the cable failed the SHIELD test? I
am not testing a shielded cable
A. A shielded cable test has been selected in the test set up. Select a non-
shielded test from the test list and retest.
Q. Why doesn't any information show in the CDP/LLDP discovery mode?
A. The Chaser displays the CDP/LLDP header packet contents. The amount
of information varies from switch to switch. Please contact the switch
manufacturer to configure your switch to broadcast the full header.
Q. Why is the Net Chaser failing every test and why is it not performing the
SNR or BERT test?
A. Make sure the Active Remote is being used and not connected to the
power adapter. If it continues to fail, the relay in the remote may require
resetting. Press and hold the STATUS button on remote until the Pass/
Fail LED illuminate and you hear an audible click indicating that the relay
has been reset. If the test still fails after resetting the relay, disconnect the
battery in the remote and wait for a full minute before reconnecting it and
resetting the remote.
Q. How do I create a new job?
A. To create a new test file (job), select the page icon in the cable test
screen, enter a name and press OK.
Q. Can I test cables with the active remote or main unit plugged into the
Power Supply?
A. No, you will get incorrect test results. Examples: BERT Test will fail or
Split pair failures
Q. Why does my Net Chaser say, "No patch cable attached?"
A. Check if the Capacitive Value is correct for the cable. LAN cables are
usually 15pf/ft. An invalid value would result in a negative length resulting in
an unknown cable being detected.
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