Distance to Subscriber Home 40’ 20’ 10’
Use Table 1, provided below to com-
pare the relationship between refer-
ence distance and leak size.
3-13
Table 1: Relationship of Distance to Leak Size Measured on Channel C
dBmV
µV/M at
10 Feet
µV/M at
15 Feet
µV/M at
20 Feet
µV/M at
40 Feet
µV/M at
100 Feet
µV/M at
250 Feet
-10 885 1327 1770 3540 8850 22124
-15 498 746 995 1991 4977 12441
-20 280 420 560 1119 2799 6996
-25 157 236 315 629 1574 3934
-30 88 133 177 354 885 2212
-32 70 105 141 281 703 1757
-35 50 75 100 199 498 1244
-40 28 42 56 112 280 700
-43 20 30 40 79 198 495
-45 16 24 31 63 157 393
-50 9 13 18 35 88 221
-55 5 7 10 20 50 124
Peak-hold Reset Period (i.e. Peak-the-Leak):
Peaking a signal is defined as the
process of using your leakage meter
and antenna to scan a specific area for
the source of a leak. Through the use
of this meter function, the field techni-
cian is able to mark and hold the high-
est peak field strength reading encoun-
tered while scanning. In addition, this
feature allows the field technician to
search for leakage without constantly
looking at the meter while patrolling.
Set function by choosing one of the fol-
lowing. Press “ENTER” when complete.
• Infinite (most common)
• Fast
• Medium
• Slow
Note: Should a false leak be detected,
or if a new peak value is needed dur-
ing leakage detection, reset the peak
screen by pressing the “SHIFT” key fol-
lowed by the auto scale (#3) key.
Edit Antenna Types: For accurate meas-
urements the correct antenna type
must be selected when doing leakage.
There are several types of antennas
that will work with the CLI-1450 &
HWTK-1750. Each antenna type has
its own unique set of antenna factors.
A complete set of antenna factors is
stored in the CLI-1450 & HWTK-1750
internal memory. This feature of the
leakage detection meter eliminates
the need for the field technician to
calculate the antenna factor.
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