Qphy-enet software option – Teledyne LeCroy QPHY-ENET User Manual
Page 47
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.