30
31
Cable Type
Length Constant (picofarads per foot)
Voice
17 pf/ft
Data
15 pf/ft
Video
15 pf/ft
Adjust the Length Constant Value
The CableMaster has default length constant values for voice, video, and
data cables. These values, shown in Table 8, are common length constants
that apply to these cable types. You can adjust the length constant value
according to the specifications of the cable you are testing.
Note:
Bypass this section if the default values stored in the tester’s
memory satisfy the length constant values for the cables you
are measuring.
Note:
The length constant value last set for each connector type
(voice, video, or data) is stored in the unit’s memory. If you
have not adjusted the length constant value for any or all cable
types, the default values will be stored. The length constant
can be adjusted at any time.
1. When in Length Mode, press and hold the LENGTH/TONE button until
“EDIT CAP” appears in the bottom of the display screen. The follow-
ing updates occur in the display screen (see Figure 16):
▪
The selected connector type (voice, data, or video) appears in
the top of the screen.
▪
An “E” will display in the right side of the screen to indicate
you are in Edit Mode.
▪
The display screen toggles between the current length reading
and the length constant value.
Table 8.
Default Length Constant Values
