KYORITSU 1109S - Manual (Page 17)

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6-5. Low Frequency Output Measurements Using Output Terminal
# WARNING
When measuring a high voltage greater than 250V, turn off power
to the circuit under test once and then follow the steps (1) to
(3) as described for AC voltage measurements. Then, turn on
power to the circuit and proceed with Low Frequency Output
measurements.
Never touch the wiring, test leads or the instrument during
measurements. After taking measurements, turn off power to the
circuit under test and disconnect the test leads.
# WARNING
Never make Low Frequency Output measurements with the range
selector switch set to the DC mA or ohm range position. This may
result in instrument damage, fuse blow or a possible injury to the
operator.
Note:
The blocking capacitor connected in series with the
OUTPUT terminal may change the AC voltage response
at low frequencies. The lower the Low Frequency Output
the more apparent the change. The AC voltage response
also changes at higher frequencies due to the frequency
characteristics.
Use Table 2 for frequency characteristics to correct the
Low Frequency Output reading.
Applications:
Measuring output voltage of low frequency amplifiers.
Detecting horizontal signals in horizontal amplification circuits of TV
sets.
Detecting the presence of input signals in synchronous isolation and
amplification circuits of TV sets.