User Manual

Chapter 3 Measurement Procedures
58
3.3.2 Output Function
(Frequency Measurement)
Fully insert the 9094 output cord (optional) into the output
terminal.
An output of DC 1 V is produced for 1000 counts on the
full scale of the frequency range. The output is
synchronized with the screen updating rate. (The output
waveform will be in a stepped shape due to D/A outputs.)
1. Edit the settings while referring to 3.3.1 Fre-
quency Measurement.
2. Press the OUTPUT key; OUT1 and OUT2 will
light up, indicating that the output function is
enabled. OUT1 outputs the frequency numeri-
cal record, and OUT2 outputs the current
numerical record.
The 10-Hz range or 100-Hz range will display up
to 125% of each range.
Pressing the MAX/MIN key will not affect the out-
put.
The bar graph shows the current measurement.
Zero cross detection of waveforms is used for
frequency measurement. In the case of special
waveforms, such as those of inverters, the fre-
quencies may not be measured despite the fact
that a low-pass filter is used (when the carrier
frequencies are as low as several kHz, the car-
rier component cannot be removed and zero
cross detection therefore cannot be performed
correctly, thereby increasing the reading).
If there is a DC waveform including 0 V, zero
cross detection cannot be performed correctly
and the reading may be increased or become
unstable.
To prevent malfunction, be careful not to
short-circuit the output terminal or apply a
voltage to it.