3. Operating Instructions
3.1. Overview
If you would like a detailed explanation of TDR measurement theory and applications before
using the CT100B, please read Section 5,
3.1.1. Handling
The CT100B is designed to meet the rigors associated with normal instrument use both in the
field and on the benchtop. Care should be taken to protect it from excessive mechanical shock,
vibration, static electrical charges, and water hazards.
The CT100B front panel is protected from impact by a snap-on front cover. The carrying
handle rotates 360° and can be used to support the instrument for bench-top use.
The CT100B is not watertight and must be protected against water spray. If the unit is
subjected to water spray, first turn off the unit with the battery-disconnect power switch on the
rear panel and then drain all of the excess water from the case and allow it to dry completely.
As noted in the
and elsewhere, the CT100B is sensitive to damage introduced
by electrostatic discharge. Always properly ground the conductors of a cable to each other or to
earth ground before attaching it, either directly or indirectly, to the front panel BNC, SMA, or
other test port. Failure to do so could damage the sampling electronics and void the Warranty.
The CT100B can be stored in temperatures of between -20°C to +60°C with or without a
battery installed and can be operated from 0°C to +50°C.
3.1.2. Powering the CT100B
The CT100B can be powered through the included 120/240 VAC (RMS) to 24 VDC external
power adapter. This adapter has sufficient capacity to charge the internal battery from a dead
battery state while the unit is under operation. The internal battery will allow the unit to
operate using power conservation techniques for periods of at least 6 hours under typical use.
Automatic power-down occurs after a variable amount of time of inactivity, selectable in
software by the user. The screen also can be set to turn off after a set amount of inactivity. A
heavily discharged battery will require 4 hours to reach full charge.
Fusing is internal and based on thermal reset switches and a manual-reset breaker. If one of
these fuses trips, it may indicate that a hardware malfunction has occurred and the instrument
should be evaluated by qualified personnel.
CT100B TDR Cable Analyzers Operator’s Manual
9
