DLI F16W, Руководство пользователя, Страница: 11 / 26

DLI 16 CHANNEL LOGGER
42
Jack
Position
s
Line USOC
RJ61
T568A
T568B
(AT&T)
100BT
(LAN)
1 Line 4 Ring wht/brn wht/grn wht/org wht/blue
2 Line 3 Ring wht/grn grn/wht org/wht blue/wht
3 Line 2 Tip wht/org wht/org wht/grn wht/org
4 Line 1 Ring blue/wht blue/wht blue/wht
5 Line 1 Tip wht/blue wht/blue wht/blue
6 Line 2 Ring Org/wht org/wht grn/wht org/wht
7 Line 3 Tip Grn/wht wht/brn wht/brn
8 Line 4 tip Brn/wht brn/wht brn/wht
Balanced vs. Unbalanced Lines
Balanced lines are lines use to cancel
noise. In balanced phone lines, two
wires are twisted together so that each
wire picks up the same amount of noise.
At the receiving end, the noise is
subtracted, and the resulting output is
the sent audio, minus the noise. A
balanced line becomes "unbalanced"
when unintentional leakage to ground
occurs. Unbalancing a phone line
causes noise. This can be a result of
poor insulation somewhere along the
line, or a bad connection. The problem is often worse in the winter,
when outside lines are wet and leakage to ground occurs along the line.
Audio is transmitted down relatively short unbalanced lines using coaxial
shielding. This shielding prevents electromagnetic noise from affecting a
single wire. The inputs to all DLI loggers are balanced lines. These
inputs may be connected directly to unbalanced (ie. Coaxial) lines, and
the ground may be connected to either side of the logger input. In other
words, either of the logger input lines (known as Ring and Tip) can be
grounded.
DLI 16 CHANNEL LOGGER
11
recordings, and then adjust the timeout value to your liking. An
excessively long timeout setting will combine multiple calls into a single
file. An excessively short setting will cause calls to break apart into
multiple recording files during periods of silence.
The VOX trigger level is adjusted by sliding the white arrowhead above
the VU meter bar graph.
VOX trigger level settings do not apply to lines operating in the
LOOPSTART, Continuous, or Complex modes.
When operating the logger in VOX mode, two settings are vital: VOX
TIMEOUT and VOX TRIGGER LEVEL. Set the VOX trigger level slightly
above the noise floor (ambient noise) on the line when the phone is on-
hook.
If you change the recording level using the keypad on the front of
the logger, you may need to readjust the VOX trigger level in the app.
Unused Lines
Logger inputs are sensitive. Unused lines may record noise coupled
from adjacent wiring, or produce feedback or hum in the speaker when
Level Boost is enabled. Set unused lines OFF in the application, turn the
gain down on unused lines, or terminate the wiring. A ground lug is
provided on the rear panel of the logger. You may wire this to a good
ground connection to prevent noise from entering via the power cord.
Software Setup and Installation
Inserting the driver CD and allowing setup.exe permission will spawn an
installer shell. Start by installing recording software on the machine that
will be attached to the USB cable.