6.MEASUREMENT
・
HOLD FUNCTIONS
18
6. MEASUREMENT
・
HOLD FUNCTIONS
6-1. Measurement Function
Measurement value and data update counter
The F130 performs A/D conversion at a rate of 3000 times/sec to calculate the measurement value.
Each time the measurement value is updated, the data update counter is incremented by one. Since
the measurement value and counter value are returned in pairs, how often you see the measurement
data of the F130 can be known from the progression of the counter value.
6-2. Hold Functions
The F130 has three hold functions: peak hold, bottom hold, and average hold, and these hold
functions operate simultaneously.
6-2-1. Peak Hold
The maximum value (peak) in the positive direction of the specified section is held.
t1: Delay time between the instant when the hold request turns ON and the instant when the mea-
surement value hold detection is started
t2: Delay time between the instant when the hold request turns OFF and the instant when the mea-
surement value hold detection is stopped
t3: Delay time between the instant when the hold clear request turns OFF and the instant when the
hold value is released
Measurement
value
Data update
counter
Counter
difference
9999
3245
－
10001
3248
3
←
According to the difference from the previous
counter value, you can see that the rate is once
out of three times (1000 times/sec.).
10000
3251
3
↓
9998
65535
－
10000
3
4
←
Goes back to "0" after counting up to 65535.
9999
6
3
Hold request
Hold value
Peak
Measurement
Detection
OFF
ON
OFF
ON
t1
t2
t3
value
clear request
