Greenlee NETcat NC-500 Instruction Manual page 8

Operation (cont'd)
Setup
With the SETUP MENU selected, the unit offers the following options:
• Length units can be selected by using the adjustment buttons as shown.
• Auto shut off can be adjusted from NEVER to 15 minutes duration, by using the
adjustment buttons as shown.
• Selecting UTP/STP allows the NVP* for the multi-pair test to be adjusted.
• Selecting Coaxial allows the NVP for the single pair/coax test to be adjusted.
• Selecting Display allows the user to change the LCD contrast level, backlight timeout,
and touch panel calibration.
• Selecting Language allows the user to change the language used within the user
interface.
* Nominal Velocity of Propagation (NVP) is a measure of the speed that a signal travels
down a wire with respect to the speed of light.
Calibration – NVP
In the NVP (Nominal Velocity of Propagation) calibration
mode the value can be adjusted using the adjustment bar.
Because cables have different capacitance and impedance,
to get an accurate length measurement, the NVP will need
to be calibrated using a length of cable of the same type
that is intended for testing. Please be aware that the multi-
pair test and coax test have separate NVP values.
8
Retest Button