DSP-4000 Series
Users Manual
Noise Test
The test tool periodically checks for excessive electrical noise on the cable under
test. Noise sources include nearby electrical equipment and transmitters. If
excessive noise is detected, the following message appears: WARNING
Excessive noise detected. Measurement accuracy may
be degraded. To continue the test, press E. If you continue the test and
then save the test results, the test report will include the warning given above.
To stop the test and return to the first screen of the selected test mode, press e.
Configuring the Test Tool
The following sections provide more details about configuring your test tool. You
can configure the test tool in the SETUP mode, or you can use the CableManager
software provided to download SETUP selections from a PC to your test tool.
Controlling the Backlight
To toggle the backlight between its two levels of brightness, press C on the
keypad. You can set the backlight timer to automatically turn off the backlight
after a specified period of inactivity. You can also disable the backlight timer.
To set the backlight timer or disable the timer, proceed as follows:
1. Turn the rotary switch to SETUP.
2. Press $ Page Down.
3. Use D to highlight the backlight time-out setting.
4. Press ! Choice.
5. Use D U to highlight the desired time-out period or the disable status.
6. Press E to accept the highlighted selection.
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