congested area he will find that switching the mode to PEAK will enhance his
ability to isolate individual lines more succinctly and with less confusion
(Appendix A)
Also the PEAK mode tends to be more sensitive requiring less available
signal to perform its function Therefore the user will often be able to
increase overall tracing distance in PEAK mode as compared to Triad Line
mode Thus switching to PEAK mode from Triad Line mode enables the user
to trace further without having to change the connection point used to
energize the line
SSS
So
o
o
on
n
n
ndd
d
deee
e LL
L
Lo
o
o
occccaaa
attttiiiin
n
n
ngg
g
g
: As with line tracing using PEAK mode while locating a
sonde will provide greater detection depth In Triad SONDE mode the
cylindrical sonde icon will tend to become less consistent and harder to
pinpoint at greater depths In this situation the user can switch to PEAK
mode Again because PEAK mode requires less available signal than Triad
mode to perform its function using it will allow the user to locate the sonde
at a significantly greater depth
D
D
D
Diiiissssaaa
ad
d
d
dvv
v
vaaa
an
n
n
nttttaaa
ag
g
g
geee
essss o
o
o
offff U
U
U
Ussssiiiin
n
n
ng
g
g
g P
P
P
PE
E
E
EA
A
A
AK
K
K
K////N
N
N
NU
U
U
ULL
L
LLL
L
L M
M
M
Mo
o
o
od
d
d
deee
essss
The obvious disadvantage of using PEAK or NULL mode is that it does not
present the same kind of graphic as the Triad modes to assist in visually
locating a target Thus to use PEAK/NULL modes requires the user to
understand conventional locating techniques in order to accomplish a job
Another disadvantage is that the receiver does not provide an automatic
depth report in PEAK or NULL mode On the other hand the user may wish
to determine the depth of a target using conventional triangulation
techniques For these PEAK and NULL mode are not only useful but also
recommended Please see Appendix A for more about this
