Operating Instructions
4) Select Units meters (feet) to switch between the different unit options.
All measurements and all traces are immediately updated to reflect the unit change.
Nanoseconds are displayed separately.
Fine Vp control
By default, the CT100 displays 3 decimal places for Vp; however, the CT100 can display 6
decimal places for Vp when extremely precise distance measurements are desired.
1) If there is a menu on the screen, press the MENU button until the menu disappears.
2) Press the MENU button. The screen will display the Main menu.
3) Select Measurement from the menu. The Measurement Settings menu appears.
4) Select Vp 3(6) Sig Figs from the menu. The CT100 will now display 6 decimal places
for the Vp readout on the screen when Vp 6 Sig Figs is shown on the menu.
5) When the CT100 is in Fine Vp mode, a new function, Fine Vp, is added to the M-
FUNCTION knob. When the M-FUNCTION knob is set to Fine Vp, turning the knob will
change the Vp value by the millionths. The Vp value can be changed by thousandths
as normal by setting the M-FUNCTION knob to the Coarse Vp function.
Relative reflection coefficient
The CT100 measures the relative reflection coefficient between cursors. When the two
cursors of the CT100 are positioned on either side of a change in impedance, this
measurement is the reflection coefficient for that change. By default, the value is displayed
in Classic mode, displaying the true reflection coefficient relative to the signal at the input of
the reflection. The CT100 can also measure in 1502C mode, which displays a reflection
coefficient relative to the signal at the input of the cable.
1) If there is a menu on the screen, press the MENU button until the menu disappears.
2) Press the MENU button. The screen will display the Main menu.
3) Select Measurement from the menu. The Measurement Settings menu appears.
4) Select RRC Method from the menu. This will toggle the CT100 between the Classic
RRC calculation and the 1502C calculation as displayed on the screen.
Vertical reference
Use the vertical reference system to increase the accuracy of vertical measurements,
including impedance, reflection coefficient, and return loss.
1) From the Main menu, go to the Measurement menu.
2) On the right side, an option for Vert. Ref. Appears. Select this. The Vert. Ref. menu
appears.
50 Mohr CT100 / CT100HF Operator's Manual
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