Teledyne LeCroy SierraNet M408 User Manual Ver.1.50 - Manual (Page 91)

SierraNet M408 User Manual 89
Trigger and Filter Settings in Easy Mode Teledyne LeCroy
Basic Patterns
When entering values in patterns the following conventions apply:
In Binary, 'X' means one bit which is "don't care" and the value can be either 1 or 0. Below
are some examples in binary and their meanings:
"X10": The value length is 3 bits and from right to left, the first and second bits have
specific values and the third one is "don't care".
"XXXXXXX1": The value length is 8 bits and from right to left, the first bit has a specific
value and the rest are "don't care".
In Hexadecimal 'X' means 4 bits in which all four are "don't care". In hexadecimal '?'
means either one of the bits 1, 2, 3 or 4 bits is "don't care" and it is not clear which bit is
"don't care" and which ones have specific value. Some examples are given in the table
below.
If VI_READ_RQST is selected, the value for the "Device HDR" field will be "10" in binary
format as this field is a two‐bits field. This field is the last field in the "DF_CTL" field which
is an 8 bits field. For this specific frame, the value of "DF_CTL" will be "XXXXXX10" in
binary format and "X?" in hexadecimal format according to the conventions above.
Connect/Disconnect
Double‐click Connect/Disconnect to open the Connect Disconnect Pattern dialog.
Figure 2.62: Connect Disconnect Pattern Dialog
Hexadecimal Value Length in bits Equivalent Value in
Binary
"X1" 8 bits "XXXX0001"
"X?" 8 bits "XXXXXX10"
"?X" 8 bits "110XXXXX"
"?" 2 bits "XX"
"?" 3 bits "11X"
"7" 3 bits "111"
"7?" 8 bits "01110XX1"