Instruction manual

15
6-2 Description of Functions
6-2-1 Input filter
An analog low pass filter which removes noise in the inputs from the sensors. A pass band can be
selected from 3 Hz, 10 Hz, 30 Hz, 100 Hz, 300 Hz and 1 kHz in function mode f-01.
6-2-2 Analog amplifier output
The sensor’s analog signals are amplified 625 times and the analog amplifier output (AAO) outputs
the amplified signal directly. Therefore, scaling is not available.
Output example When the excitation voltage is 5 V and the sensor output is 3.2 mV/V,
the analog output value will be:
3.2 mV/V x 5 V x 625 ≈10 V.
Analog output errors
As scaling is not available for the analog output, the output value varies depending
on the indicator. Before use, be sure to check the output values of the sensors.
6-2-3 Moving average filter
Filter which averages the measured values converted from analog to digital. The number of moving
average is set in function mode
f-02. The maximum number of moving average is 254.
Select a small value when high-speed measurements are required, and a large value when stable
measurements are required.
6-2-4 Digital filter
A high-speed processor controlled, high-performance digital filter. The cutoff frequency value is set in
function mode
f-03.
Select a high frequency when high-speed measurements are required and a low frequency when
stable measurements are required.
6-2-5 External input
The AD-4532B has nine external inputs, ZERO, HOLD, LATCH, COMP ON, COMP 1 to COMP 5
(5-level comparator). Maintain the inputs for more than 10 ms.
6-2-6 Hold
As digital filtered data is used, high-speed hold is enabled. A hold mode can be selected from
sample hold, peak hold, bottom hold and bipolar peak hold in function mode f-14.