14
Fault Mapper Pro
®
Model CA7027
4.12 Single Shot and Continuous Scanning Modes
When the Fault Mapper Pro
®
is first switched on, it is set to
“Single Shot”
mode.
In this mode, the Fault Mapper Pro
®
only fires a pulse into the cable under
test when either the
and buttons or the
TEST /
button is pressed.
Single Shot Mode:
Saves on battery life and also enables
the Fault Mapper Pro
®
to be disconnected from the cable
while still leaving the fault display on the screen.
To enter
“Continuous Scanning”
mode press and hold down the
TEST /
button.
The
icon will appear at the bottom right of the display, when Continuous
Scanning mode is active.
Continuous Scanning Mode:
Fires pulses into the cable
under test at the rate of 6.7 pulses per second. In this
mode the Fault Mapper Pro
®
is able to more easily identify
intermittent cable faults.
4.13 Typical Fault Displays
The following table shows typical fault traces to assist you in the identifica
-
tion of faults using the CA7027:
Type
Vp Z
Type
Vp Z
Cat5 STP
72 100
T/Pair Jelly PE
64 100
Cat5 UTP
70 100
T/Pair PE
67 100
Coax Air
98
50/75
T/Pair PTFE
71 100
Coax Air Space 94 50/75
T/Pair PVC
58 100
Coax Foam PE 82 50/75
T/Pair Paper 72nF
88 100
Coax Solid PE
67 50/75
T/Pair Paper 83nF
72 100
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