JEOL JSPM-5200 Instructions Manual page 318

Modulation Signal
To operate the lock-in amplifier, the refere
signal. Usual
for this reference signal.
Here yo u set the oscillator of the lock-in amplifier.
• Frequency/kHz
Set the signal frequency that is output from the oscillat
se t this by clicking on the Set button using the slider bar.
On WinSPM, you can set this in the range of 0 to 250 kHz.
• Amplitude/V
Set the signal amplitude that is output from the oscillator in V order. You c
set this by clicking on the Set button using the slider bar.
On WinSPM, you can set this in the range of 0 to 5 V.
Modulati on Signal Scan
When you specify the frequency component to detect by means of the Ref. Frequency
contr ol such as in measuring the static ele
frequency so that the
efficiency.
Use this field to find the modulation frequency at maximum efficiency by scanning the
modulation signal from the amplifier of the lo
signal from the lock-in amplifier at that time.
• St
art Frequency/kHz
Set the start frequency in kHz orde
• Stop Frequency/kHz
Set the stop frequenc
• Scan time/sec
Set the total time required to perform the modulation-signal scan. The modula-
tion-signal scan takes 35 s in the most rapid scan. You can set 600 s (10 min) as the
maximum value.
• Use result (1F freq)
If you check this box, the system sets the 1F component of the frequency, at which
the detected signal of the lock-in amplifier becomes maximum as a result of scan
ning the modulation signal, to the Frequency/kHz in the Modulation Signal frame.
The detected frequency also appears to the right of the Start button.
• Start
This starts the-modulation signal scan.
TMPM5200-2
ly, a signal from the oscillator, which the lock-in amplifier itself has, is used
lock-in amplifier can perform signal detection with maximum
y in kHz order when you perform the modulation-signal scan.
In the undetected state, Not detect appears there.
５ MEASUREMENT OPERATION
nce signal is required
or in kHz order. You can also
ctric force, you must set the modulation signal
ck-in amplifier and by plotting the output
r when you perform the modulation-signal scan.
for locking the input
an also
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