Fluke DSP-100 user manual Determining Hub Port Capabilities Model DSP-2000, Noise Test Results

Running Individual Tests 4

Determining Hub Port Capabilities (Model DSP-2000)

Noise Test Results

As the noise test runs, the displayed test results are updated every second after the first 10-second sample period. Table 4-8 describes the items on the screen.

Item

Impulse Noise

Threshold

Noise Test

Average

Peak

$Stop Test

Table 4-8. Items on the Noise Monitor Screen

Description

The minimum level of noise that is considered to be a noise hit. The default threshold is 270 mV. If you want to change the fault threshold, see the earlier section “Changing the Impulse Noise Threshold.”

The overall result of the noise test. Displayed only when 10BaseT is selected. A PASS result means that no 10-second intervals included more than two noise hits. A FAIL result means that more than two noise hits were detected during a 10-second interval.

The average number of noise hits per second since the start of the test.

The highest number of noise hits per second and the time at which the peak was recorded.

Stops the noise test and freezes the screen. To restart the noise test, press T.

Determining Hub Port Capabilities (Model DSP-2000)

This test determines if a hub supports the following standards:

∙Auto-Negotiation

∙10BaseT

∙100BaseTX

∙100BaseT4

∙100BaseTX Full Duplex

∙10BaseT Full Duplex

To determine hub port capabilities, proceed as follows:

1.Use a patch cable of the correct impedance to connect the network connection to the test tool’s MONITOR jack.

2.Turn the rotary switch to MONITOR.

3.Use Dto highlight HUB Port Capabilities; then press E.

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