IKA labworldsoft - Manual (Page 52)

- 52 -
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The &RXQWHU function block can perform counting functions for input signals in the TTL-Bereich
such as SRVLWLYHQHJDWLYH VORSHV or 2Q  2II WLPHV .
The counter is automatically set to 0 at the start of a new measurement.
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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. .
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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.