Tachometer Pulse Input Specifications
6-5
Tachometer Pulse Input Specifications
You can use the tachometer pulse inputs to the PULSE IN A/B connectors of the LX-20/20L.
Number of Inputs
16 bits mode: 2 channels 32 bits mode: 1 channel or 2 channels
Input Method
Threshold Level + 0.5 V, + 1 V, + 2.5 V, + 5 V, + 10 V, + 20 V selectable
(Maximum input v/- 50 V)
(Applicable input frequency 450 kHz)
Input
Impedance
100
kohm
Measurement Mode
(1) pulse (gate): Pulse count mode within the gate time.
Range:
1
to
255
times
of
the
sampling
frequency.
Accuracy: +/- 2 counts
(2) pulse (total): Total counts from measurement start to stop
Accuracy: +/- ± 5 counts
(3) period: Cycle count mode
Range: 1 msec, 5 msec, 10 msec, 50 msec, 100 msec, 500 msec, 1 sec
Accuracy: +/- 0.3 % (at 16 bits mode) +/- 0.2 % (at 32 bots mode)
(4)
frequency:
Frequency
measurement
mode
Range: 10 Hz, 20 Hz, 50 Hz, 100 Hz, 200 Hz, 500Hz, 1 kHz, 10 kHz, 20 kHz
Accuracy: +/- 0.3 % (at 16 bits mode) +/- 0.2 % (at 32 bits mode)
(5) rpm: RPM mode
Range: 1500 rpm, 3000 rpm, 6000 rpm, 9000 rpm,
12000
rpm,
18000
rpm,
24000
rpm
Accuracy: +/- 0.3 % (at 16 bits mode) +/- 0.2 % (at 32 bits mode)
Divided
Rate:
1
to
255
Moving Average: 1 to 16
Number
of
Pulse
per
Revolution:
1
to
255
Tachometer Pulse Timing: Use LSB 1 bit for the tachometer pulse timing
Note that this function is available at the sampling frequency 48 kHz or lower.
z
1 x 16 bits tachometer pulse input channel is equivalent to 1 x analog input channel. 1 x 32 bits
tachometer pulse input channel is equivalent to 2 x analog input channels. Therefore, if you turn ON
tachometer pulse input channel(s), in order keep the same analog input channels, lower the sampling
frequency is required by following the setting of tachometer pulse input channel(s).
z
Set
Moving Average
to [1] only, when the sampling frequency of 102.4 kHz, 100 kHz, 96 kHz, 65.536 kHz,
51.2 kHz, 50 kHz, 48 kHz, or 32.768 kHz is selected.
z
Only 1 x 32 bits tachometer pulse input can be selected when the sampling frequency of 102.4 kHz, 100
kHz, 96 kHz, or 65.536 kHz is selected.
z
The LX Navi cannot monitor the tachometer pulse input in wave form display. Use the distal display to
monitor.
z
The LX cannot playback the recorded tachometer pulse input signals. Process the data as digital data file.
z
You cannot use the tachometer pulse inputs and the generator output function at the time.
Summary of Contents for LX Series
Page 2: ......
Page 10: ...Contents viii...
Page 26: ...Sampling Frequency and Number of Channels 1 16...
Page 117: ...Main Unit Specifications 6 3 External Dimensions...
Page 142: ...Recording Synchronization Specifications 6 28...
Page 146: ...Note 7 4 Note...
Page 147: ......