Filter
Top Products
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
Holdoff Ctrl
1 of N select
32-bit
Counter
32-bit
Latch
System
Trigger
FIFO
10 - 2 0 M H z
Reset
Holdoff Ctrl
1 of N select
32-bit
Latch
FIFO
Tach/Ext Trig
Tach
Analog
Conditioning
Analog
Conditioning
Channel 1
Channel 2
Ctrl & Status
Registers
or paged A24 VXI
DSP "B" Bus
Figure 7-15: Tachometer option block diagram
HP E1432A User's Guide
The Tachometer Option
7-3