User manual

B5 Hold function
If the push-button "HOLD” is pressed, the last frequency reading is
"frozen”, i.e. it is held. Even when the BNC cable is disconnected
from the measurement object. The held value and "—HOLD—"
appear alternately on the display. To return to the current measure-
ment, again press the push-button "HOLD” once.
B6 Measuring the period
When performing frequency measurements at channel "C”, the reci-
procal value of the frequency, the so-called period, can be display-
ed by setting the switch "RANGE” to "PERIOD”. If a measurement
signal of e.g. 74 kHz is applied, the period of the measurement sig-
nal is 1/74 kHz that is 13,513 µs. At a measured frequency of 50 Hz
the period is 20 ms. On the display "20.000 –S.” is displayed (due to
technical reasons the measuring unit "ms” cannot be displayed).
B7 Reference value measurement "REL” (=relative)
If the push-button "REL” is applied during the measurement, the
display is set to "0” and the symbol "REL” appears on the lower
right corner of the display. The reference measurement "REL” indi-
cates the difference between the held value and the currently mea-
sured value. This special feature is especially helpful when determi-
ning slowly changing frequencies or in the case of superposed
frequencies.
If you want to exit the reference value measurement, again press the
"REL” push-button. The symbol disappears and you return to the
current measurement.
B8
Measurement value recording (minimum, maximum and average
value)
If measurement value recording is activated, the lowest measured
frequency, the highest measured frequency and the average value
can be displayed after approx. 10 measurements. For this purpose,
press the push-button "RECORD” once. The symbol "R.C” appears
on the upper right corner of the display. The recording was started.
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