５
MEASUREMENT OPERATION
5-258
TMPM5200-2
•
Line Reject
This reduces the power-supply noise by applying a filter for the power-supply (AC
100 V) frequency that enters the input signal. Usually, select Off.
Off
Do not use Line Reject.
F
Apply a filter for the power-supply frequency.
2F
Apply a filter for the double harmonic frequency of the
power-supply
frequency.
F
+
2F Apply a filter for both the power-supply frequency and its double
harmonic
frequency.
•
Track
This sets whether you apply the filtering frequency band to the reference signal.
Usually, check this box.
•
Ref Internal
Select which signal do you use as a reference signal that is used for the lock-in
amplifier. Usually, select INT.
•
INT
Use the internal oscillator of the lock-in amplifier.
•
TTL
Use the TTL level input-signal for the locking operation.
•
EXT
Use an external oscillator for the locking operation.
•
2F
This selects which frequency components of the input signal do you detect and
output for the reference signal frequency. Usually, do not check this box.
Let the period of the reference signal be
ω
, the lock-in amplifier locks and outputs
the
ω
component of the input signal. If this box is checked, the 2
ω
component,
which has a double period, is output as the output signal.
•
Slope / 12dB
This specifies the filtering for the output signal. Usually, do not check this box.
•
Dynamic Res.
This sets the Dynamic Reserve mode. Usually, set Normal or High Resolution.
•
Offset
Check this box when you set the offset for the output signal. Usually, do not check
this box.
•
Channel 1 / Channel 2
Set the offsets for both output channels 1 and 2. You cannot use this when the
Offset is not checked.
