Fluke 990DSL, Руководство пользователя, Страница: 103 / 242

POTS Testing and Fault Location
The POTS Toolbox
4
4-39
Tracing Tone Test
The Tracing Tone test places a warbled, high-level ID tone on a test pair. You
can choose to apply the following types of tones:
•
A
(
Simplex)
: Tone applied equally on T & R with respect to G (non-
intrusive)
•
B
(
T-G
): Tone applied only between Tip and Ground
•
C
(
R-G
): Tone applied only between Ring and Ground
•
D
(
T-R
): Tone applied only between Tip and Ring (audible).
Setting Up a Tracing Tone Test
The Tracing Tone test has no test-specific setup.
Running a Tracing Tone Test
To run a Tracing Tone test on a pair, do the following:
1. Select
Tracing Tone
from the POTS Toolbox, then press
L
.
2. Press the softkey for the type of tone you want to apply, then press
K
.
A diagram depicting the selected mode is displayed. The transmitting
arrow indicates that the tone is being applied.
3. To stop sending the selected tone, press
K
.