R&S RTO6, User Manual

Page: 745 / 2677

Protocol analysis
R&S
®
RTO6
745 User Manual 1801.6687.02 ─ 05
●
Vil(max) is being used for the falling edge evaluation. This "l" (low) threshold is the
maximum level for the signal to be identified as "0". If the signal value comes from
a high state (hence, falling edge), the state remains to be considered as high ("1"),
until it has fallen below Vil(max).
There are four ways to set the thresholds for the digitization of the signal lines:
●
"Threshold"
Enter the values directly in the fields.
●
"Preset thresholds"
Allows to select the default threshold settings according to the Ethernet standard:
2.0
V and 0.8 V.
●
"Auto thresholds"
Executes a measurement of reference levels and sets the thresholds to the middle
reference level of the measured amplitude.
●
"Couple thresholds"
Overwrites the data thresholds with the clock thresholds.
Remote command:
BUS<m>:MDIO:CLOCk:THReshold:HIGH
on page 2041
BUS<m>:MDIO:CLOCk:THReshold:LOW
on page 2041
BUS<m>:MDIO:DATA:THReshold:HIGH
on page 2041
BUS<m>:MDIO:DATA:THReshold:LOW
on page 2042
BUS<m>:MDIO:PRESet
on page 2042
BUS<m>:SETReflevels
on page 1671
BUS<m>:MDIO:COUPling
on page 2042
13.16.2.2 MDIO display settings
Access: [Bus] > "Setup" tab > "Protocol = MDIO" > "Display" tab
To enhance the decode possibilities of the MDIO protocol, you can use an additional
setting in the "Display" tab: "Decode layer".
MDIO (option R&S RTO6-K540)