28
7. Specifications
7-4. Pulse input
Number of input channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Input connector type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BNC
Input format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .unbalanced
Input impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 kΩ
Input voltage . . . . . . . . ±50V maximum (threshold ±20 V)
Input frequency . . . . . . . . . . . . . . . . . . . . 450 kHz maximum
o
The input voltage and input frequency have limits.
Threshold . . . . . . . . ±0.5 V, ±1 V, ±2.5 V, ±5 V, ±10 V, ±20 V
(switchable)
Division ratio setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–255
Moving average . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1, 2, 4, 8, 16
Measurement modes
(1) Count (gate) mode
Measurement range: 1–255× sampling frequency
Measurement precision: ±5 counts
(2) Count (total) mode
Measurement precision: ±5 counts
(3) Period mode
Measurement ranges: 1 msec, 5 msec, 10 msec,
50 msec, 100 msec, 500 msec,
1 sec
Measurement precision: ±0.2% (using 24-bit AD)
±0.3% (using 16-bit AD)
(4) Frequency mode
Measurement range: 10 Hz, 20 Hz, 50 Hz, 100 Hz,
200 Hz, 500 Hz, 1 kHz, 2 kHz,
5 kHz, 10 kHz, 20 kHz
Measurement precision: ±0.2% (using 24-bit AD)
±0.3% (using 16-bit AD)
(5) rpm mode
Measurement ranges: 1500 rpm, 3000 rpm,
6000 rpm, 9000 rpm,
12000 rpm, 15000 rpm,
18000 rpm, 24000 rpm
Number of pulses per revolution setting . . . . . 1–255
Measurement precision: ±0.2% (using 24-bit AD)
±0.3% (using 16-bit AD)
o
The measurement precision of each mode does not
include sampling frequency series
5
.
ATTENTION
o
In period mode, frequency mode and rpm mode, the
least significant 1 bit is used for pulse timing. When
a pulse is detected, the timing value is 1. At all other
times it is 0.
o
Pulse timing is disabled when using sampling fre-
quency series
5
.
o
The recorded pulse input signal cannot be played
back.
o
Aliasing could occur.
o
Analog signal and pulse data sampling are not
synchronized.
o
In count (total) mode, period mode, frequency mode
and rpm mode, if pulse input ceases while recording,
the last pulse data will be retained.
Summary of Contents for LX-1000 Series
Page 1: ...Instructions for Use Z LX 1000 D01361310C...
Page 35: ...35...