Protocol analysis
R&S
®
RTE
662User Manual 1326.1032.02 ─ 20
Thresholds
Threshold values are used for digitization of the signal.
Sets the threshold value for digitization of signals for each line. If the signal value on
the line is higher than the threshold, the signal state is high (1 or true for the Boolean
logic). Otherwise, the signal state is considered low (0 or false) if the signal value is
below the threshold.
"Threshold
high" and
"Threshold
low"
Upper and lower threshold levels. You can enter the values directly in
the fields.
"Auto thresh-
olds"
Executes the measurement of reference levels and sets the thresh-
olds to the middle reference level of the measured amplitude.
"Preset thresh-
olds"
Selects the default threshold voltage from a list. The value is set to
"Manual", if the threshold was set with "Auto thresholds", or was
entered directly.
Remote command:
BUS<m>:MILStd:THReshold:HIGH on page 1608
BUS<m>:MILStd:THReshold:LOW on page 1609
BUS<m>:MILStd:PRESet on page 1608
BUS<m>:SETReflevels on page 1421
Min Gap
Checks and sets a value for the intermessage gap between the last bit of a message
and the following command word sync. The time is measured between the mid bit zero
crossings. According to the standard, the minimum idle time is 4 μs.
The minimum gap time is relevant for protocol configuration and error trigger.
If "Min Gap" is enabled, the instrument detects the specified gap during decoding. If
the trigger type "Error condition" is selected in addition, the instrument triggers when
the gap is shorter then specified.
Remote command:
BUS<m>:MILStd:MINGap:BITS on page 1608
BUS<m>:MILStd:MINGap:SELect on page 1607
TRIGger<m>:MILStd:MINGap:BITS on page 1617
TRIGger<m>:MILStd:MINGap:SELect on page 1617
Max Response
Checks and sets a value for the maximum response time between the last bit of a word
and the following status word sync. The time is measured between the mid bit zero
crossings. According to the standard, the RT shall respond to a valid command word
within the time period of 4 to 12 μs.
The max response time is relevant for protocol configuration and error trigger.
If "Max Response" is enabled, the instrument detects the specified gap during decod-
ing. If the trigger type "Error condition" is selected in addition, the instrument triggers
when the response time is longer than specified.
MIL-1553 (option R&S
RTE-K6)
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