User guide

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The &RXQWHU function block can perform counting functions for input signals in the TTL-Bereich
such as
SRVLWLYHQHJDWLYHVORSHV
or
2Q2IIWLPHV
.
The counter is automatically set to 0 at the start of a new measurement.
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&RXQWIXQFWLRQ

2XWSXWVLJQDO
Positive slopes: Number of changes of the input signal from TTL-Low to TTL-High.
Negative slopes: Number of changes of the input signal from TTL-High to TTL-Low.
Time High Level: Seconds since the start of the measurement with a data value greater than
TTL-High (2.0) of the input signal.
Time Low Level: Seconds since the start of the measurement with a data value less than TTL-
High (0.8) of the input signal.
Carry out the following instructions:
1. Call up the parameters window by double clicking on the icon.
2. If necessary, enter the
0RGXOH1DPH
of the control block into the "Designation" text field.
3. Select
3RVLWLYH1HJDWLYH6ORSHV
function or
2Q2II7LPH
.
4. Confirm entries with 2..

0XOW LFKDQQHO2SHUDWLRQ
The ports should identifiable for multichannel operation. The ports may be identified for this
purpose.
Carry out the following instructions:
1. Set the &KDQQHO&RXQW by clicking the upper arrow keys.
2. Select the channel by clicking the lower arrow keys.
3. Enter the
&KDQQHO'HVLJQDWLRQ
into the text field, i.e. make an entry for each channel
selected.
4. Select
3RVLWLYH1HJDWLYH6ORSHV
or
2Q2II7LPH
for the channel selected.