Facom 714, Инструкция по эксплуатации

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Note: Considering the signal’s interference, a cyclic ratio may be shown both as T+ and T-.
Here, at T+ the tester indicates the direct ratio, and in T- it indicates the reverse
ratio,
To view the minimum and maximum values for the current reading, press the “MIN/MAX”
key several times.
T1
T1+T2
T2
T1+T2
CHARACTERISTICS OF THE CYCLIC RATIO MEASUREMENT
Note 1: If the frequency is not within the
measurement range, the display indicates an
invalid measurement; i.e. « ».
Note 2: If the voltage is not within the
measurement range, the display shows “OL”.
Measuring the (injection) time
•
Connect the input terminal cords, with the reference potential connected to the “COM”
terminal.
•
Set the rotating switch to “%”, and press the yellow key.
•
The “ms” unit symbol appears, and the digital display indicates the value for the injection
time, provided the signal’s polarity matches the trigger level chosen (displays “T+” by
default).
•
Otherwise, the cyclic ratio value is undetermined (display : ), and the “T+” symbol
blinks.
•
If so, change the trigger level sign (display “T-”) by pressing the appropriate key.
If the display still indicates , this means the signal’s frequency is outside the tester’s
measurement domain.
To view the minimum and maximum values for the current reading, press the “MIN/MAX”
key several times.
Measuring with the «
λ λ
λ λ λ
» probe
•
Connect the probe to the tester while respecting polarity.
•
Set the rotating switch to the “
λ
” position: the “
λ
” symbol appears.
•
The digital display then indicates the current value expressed in Volt.
•
Press the MIN/MAX key.
•
The “MIN” and “MAX” appear, as well as the bargraph scale: opposite this scale, the bar
ribbon moves according to the variation in the current’s value, between the MIN and MAX
values for each variation cycle, indicated by the MIN and MAX bars lit.
•
The digital display still indicates the current value averaged over 1 second. Press again to
resume a measurement cycle. Press and hold the MIN/MAX key to quit the MIN/MAX
function, and the bargraph disappears.
•
After changing the probe, reset the bargraph by pressing the key.
3 V
80 V
10 Hz
1000 Hz
100
0 - 100%
5 - 95%
1% +1 pt
1%
Min input voltage
Max input voltage
Min. frequency
Max. frequency
Display range
Operating domain
Measurement domain
Intrinsic error
Resolution