①
POWER
This switch turns on or off the power.
②
Input selection switches
These switches select input signals. When using the
Lock-in Amplifier, set the switches as follows:
V
A-B
A
FLOAT
GROUND
A is selected by
pressing it.
I
10
8
10
6
Both switches not
selected (popped-out
position).
FLOAT is selected by
pressing it.
③
SENSITIVITY setting keys These keys set input sensitivity. Set the highest
sensitivity so that the OVLD indicator does not light.
④
“A” (INPUT) terminal
This is a signal input terminal.
⑤
LINE REJECT key
If this key is on, the frequency of the power (AC100V)
that enters the input signal will be filtered. You do not
usually use this key.
⑥
FILTERS MODE key
If this key is on, the input signal will be filtered. Usually,
you select “BP”.
⑦
FILTERS TRACK key
This key decides whether the frequency range for
filtering is changed or not, according to the reference
signal. You usually select TRACK.
⑧
DISPLAY1 key
This key selects which value to display out of the set
value and the CH1 output value. The presently displayed
value corresponds to the one for which the LED is lit.
⑨
PARAMETER keys
These keys change the set value selected by the
DISPLAY1 key
⑧
.
⑩
AUTO key
If this key is on, parameters such as phase will be set
automatically.
⑪
+90/FUNCTION key
Every time you press this key, the phase will be changed
by 90
°
.
⑫
REFERENCE keys
These keys are used for selecting reference signal and
components (
ω
/2
ω
) of detected signal for the Lock-in
Amplifier. Turn the INT LED on, and turn the F LED
off.
⑬
OUTPUT terminals
These are the signal output terminals. Change the type of
signals to output to CH1 and CH2 by using the output
selection key
⑮
.
⑭
TIME CONSTANT setting keys
These keys set the time constant of the lock-in
amplifier. You can change the time constant according to
the scan speed of the SPM. Usually, you select MIN.
⑮
Output selection key
You can change the Acos
φ
(CH1) and Asin
φ
(CH2)
outputs, or the amplitude (CH1) and phase (CH2)
outputs.
5-14
TMPM5200-2
