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Qphy-enet software option – Teledyne LeCroy QPHY-ENET User Manual

Page 47

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QPHY-ENET Software Option

QPHY-ENET Operator’s Manual Rev G

47

1000Base-T Measurements

Transmitter measurements for gigabit Ethernet over copper (1000Base-T) are defined in the IEEE 802.3-2005
standard in clause 40.6. Four test modes are required in the physical layer device. A disturbing sine wave is
required for modes 1 and 4. The frequency and amplitude of this sine wave for each mode is listed in

X

Table 4

X

.

Section D of TF-ENET-B fixture is used for mode 1 and mode 4 tests with Disturbing Signal, section G is used for
the same tests without disturbing signal. Mode 2 and mode 3 tests are using section G of TF-ENET-B fixture.

Figure 35. Transmitter test signal in IEEE 802.3-2005 standard in clause 40.6

The tests required by the standard are listed in the

X

1000Base-T [IEEE 802.3-2005] on pair A, B, C and D

X

topic

on page

X

9

X

.

Table 4. Gigabit Ethernet tests, modes and fixtures

Test

Test mode

Fixture location

Disturbing Sine Wave

w/Dist

wo/Dist

Frequency

Amplitude

Peak differential output voltage

Maximum output droop

Differential output templates

Transmitter distortion

Jitter in master mode

Jitter in slave mode

Common Mode Output Voltage

1

1

1

4

2

3

4

D

D

D

D

G

G

G

G

31.25 MHz

31.25 MHz

31.25 MHz

20.833 MHz

N/A

N/A

N/A

2.8 V

p-p

2.8 V

p-p

2.8 V

p-p

5.4 V

p-p

N/A

N/A

N/A

G

G

C

These tests require calibration of the setup using TF-ENET-B, refer to the corresponding

X

Signal Path Calibration

Procedure

X

topic on page

X

74

X

.

To run the full set of 1000Base-T tests, choose the 1000BASE-T All tests configuration in QualiPHY.

If the test needs to be run manually, use the following procedure:

1. From the menu bar, select Analysis

Ethernet Tests

2. Touch the 1000Base-T button on the left side of the menu to select the 1000Base-T test mode.