5.3 Evaluating the reflection image
The reflection image is displayed on the screen immediately after the measurement or continuously
(depending on the selected measurement mode).
» To determine the distance, use the
The distance will be displayed in the bottom left corner.
Note:Typical fault traces can be found on the rear side of the device.
5.4 Selecting the measurement range
The TDR 500/TDR 510 has 11 measurement ranges from 7 to 6,000 metres.
1. To select a measurement range or to scan the cable route, hold down the
2. To change the measurement range, press the or key.
5.5 Adjusting the gain
1. Position the cursor at the start of the event.
2. Hold down the
key and increase or decrease the gain by pressing the key or the key.
5.6 "Single" and "continuous" measurement operating modes
Single mode
When in "single" mode, the TDR 500/TDR 510 transmits only one pulse to the cable to be tested if
the / or
keys are pressed. This operating mode lengthens the battery life and makes it possible
to disconnect the TDR 500/TDR 510 from the cable without the fault indicator disappearing from the
display.
The device will be in "single" mode when it is first switched on.
Continuous mode
When in "continuous" mode, the TDR 500/TDR 510 continuously transmits pulses to the cable to be
tested. In this mode, it is easier for the device to detect intermittent cable faults.
» To activate the "continuous" mode, hold down the key.
The mode is enabled, and the
5.7 Using the device as tone generator
The TDR 500/TDR 510 can be used as tone generator to locate and identify cables and cores. This
requires a conventional inductive tone probe for the frequency range 810 Hz to 1,110 Hz.
In order to be able to feed the tone into the cable over a long period, the automatic switch off remains
disabled while the device is being used as tone generator.
802-001-1
The example on the left illustrates a low-resistive fault at 64 metres
(negative peak) and a high-resistive fault at 129 metres. The open
end of the cable is indicated as a large, positive peak. This is used to
determine the end of the cable route and the total length of the cable
(in this case : 180 m).
key to move the cursor to the desired event.
symbol will appear in the bottom right corner.
Time domain reflectometer TDR 500/TDR 510
Operating the TDR 500/TDR 510
key (RANGE).
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