Armada Technologies Pro400 Manual De Instrucciones página 9

TDR
Vp %Vc
VP=67%
Main 25Ω Feet
Contrast
Shutdown: 3 minutes
The LCD display is fitted with an LED backlight to enable easy
viewing under a variety of different lighting conditions. The
backlight is switched on and off with
3.8 How to Determine Vp Settings
If the Pro400 TDR is to be used with a cable type for which the Vp
is unknown, this must first be determined by following the steps
below.
Take a sample of the cable at least 300 ft long.
1.
Measure the actual length of cable using a rule or tape
2.
measure, or some other reliable method.
Connect the Pro400 TDR and adjust the Vp setting such that
3.
the tester gives a correct reading of the sample length.
Section 4 – Using the Pro400
Upon completion of the set-up procedures in section 3, press
button ▼ and the test screen above will be displayed.
Vp setting
1.
Press ▼ to move to Vp type, press
► to set to Vp % Vc. Press ◄ or
►to increase or decrease
displayed value. Press
to screen. Selected values will be
automatically stored.
3.7 Backlight
key.
9
to return