23
Counter/Timer Mode
The counter/timer mode determines the time delay between two separate input signals with 10-ns resolution and
reports it back to the PC. You can view the counter output in the Properties tab.
Use the channel’s logic to select the input signals that will be compared by the counter (see
Channel Properties:
Logic
below). For example, if the logic reads “in1 and in2;” the counter will determine the time delay between a
pulse at Input 1 and the next pulse from Input 2.
Normally, the counter will report a value each time a pair of pulses is measured. To retain the current measurement,
check the “Hold measurement” button; the counter will not update the delay display until this button is cleared.
NOTE:
To switch from counter mode, first click the Disable button and ensure the
channel LED is unlit, indicating that the channel is disabled. This will help you
avoid unexpected behaviors when the counter is transmitting measurements
rapidly (e.g., >1000 measurements per second).
NOTE:
When you first run the LC880, channels that are configured as counters
are initially disabled and must be enabled either by clicking the “Enable” button
on the channel’s Properties screen, or by using the front panel (See
Experimenting: Disable/Enable Channels
below).
Содержание LC880
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