HP E1433A User's Guide
The Tachometer Option
Input Count Division
The tachometer can be programmed to divide the input signal. For example if a signal is coming in at 100 counts per second, the tachometer can be set to look at only every 10th count for a result of 10 counts per second.
Holdoff Time
The tachometer can be programmed to wait for a specified period of time between counts that it will detect. After a count is detected, subsequent counts will be ignored until the holdoff time has passed.
Block Diagram
Channel 2
Tach/Ext Trig Analog
Conditioning
Holdoff Ctrl
1 of N select
System
Trigger
FIFO
Ctrl & Status Registers
Channel 1 |
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Analog |
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Tach |
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Conditioning |
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Holdoff Ctrl
1 of N select
FIFO
DSP "B" Bus or paged A24 VXI
