6-50
IM DLM6054-01EN
Data Pattern (Set Pattern)
You can use a data pattern as a trigger condition. The data pattern trigger condition is met when the
sampled data source pattern matches the specified pattern.
• Y
ou specify patterns of up to 128 bits in length in hexadecimal or binary format.
• If you specify an X in a pattern, the condition is assumed to be met regardless of the corresponding
bit status.
• If a binary pattern contains any Xs, the corresponding hexade
cimal display will be “$.”
Bit Rate (Bitrate)
If Clock is set to OFF, the DL6000/DLM6000 samples the data source at the specified bit rate.
Range: 1 kbps to 50 Mbps in 1 kbps steps
State (CS)
When Clock is set to ON, you can control the period during which the data source is tested by using
the state conditions (CS).
ON The data source is tested when the state conditions are met.
OFF The data source is always tested.
State Conditions
You can set the state condition for each signal to H, L, or X. When the comparison of the selected
state conditions and the states of the input signals meets the requirement of the Logic setting
described below, the result of the comparison is “met.”,
H The signal level must be high.
L The signal level must be low.
X No conditions have to be met (“don’t care”).
* For CH1 to CH4, the DL6000/DLM6000 determines the high and low reference levels using the
trigger levels described below. For bits A0 to D7, the DLM6000 determines the high and low
levels using the threshold level setting described in section 5.2.
Logic
You can select the logic for the state conditions. When the result of comparing the state conditions
is true according to the specified logic, the result of comparison is set to “met.”
AND All the signal states must match their specified state conditions.
OR One or more of the signal states must match their specified state condition.
Latch
When Clock is set to ON, you can specify the timing at which the sampled data source pattern is
compared with the specified trigger condition pattern. If you set the source to X, the patterns are
compared at each sample.
You can select which latch source edge causes the data patterns to be compared.
The rising edge
The falling edge
Threshold Level and Hysteresis (Level/Hys)
You can specify the threshold level when you have set the source signal type (Select) to Analog.
• You can set the threshold level in 0.01 division steps to a value that fits within the 8 divisions of the
screen. For example, when the voltage scale is 2 V/division, you can set the threshold in 0.02 V
steps.
• Y
ou can reset the trigger level to the current offset voltage by pressing RESET.
The hysteresis setting is the same as that for the Edge trigger. For details, see section 6.3.
6.13 Triggering on a Serial Pattern Signal
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