Anfatec eLockIn 203, Manual

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curve with the
Knob
. Notice that the reference frequency shifts together with the cursor
position. When you go back to
[LockIn]
, the selected frequency is kept and you can
change time constant or excitation amplitude.
In addition, the Q-factor of detected resonances is calculated and displayed.
You have measured a resonance curve in spectra mode. At the end,
the reference frequency sets to the default value automatically.
Now switch to Measure and shift the cursor to the position you
like to use for the excitation. This changes the default
reference frequency.
Note: The cursor appears on the last selected data set out of the four display
channels. No cursor will appear if another channel is selected in
[ Spectra /
Display ]
or the signal is switched to invisible (
Color
= Off ).
3.6 S
ETUP
[ S
ETUP
]
The main screen in the
Setup
mode displays certain system parameters as free RAM
space, free disk space and so on. The menu entries have the following functions:
Config IP : The IP address, which is necessary to control the instrument over the
LAN, can be changed here. DHCP can be enabled. In order to make any change of
the IP address over or if the DHCP client is enabled or disabled, one has to confirm
the changes with
Save .
Misc
– opens a sub-menu with the following entries:
Beep ( On / Off ): This beep can help to identify a range overflow of the
input channel.
TimeOut : The time given here is related to an internal timer and
connected to several time-dependent functions:
☑
This time multiplied by 1000 gives the time, after which the instrument
stores the parameters automatically.
☑
This multiplied by 10 gives the screen update rate of the LockIn and
the oscillo Scope screen.
☑
This time multiplied by 10 gives the screen update rate during spectrum
acquisition.
RefPLL
: selects the reference level for the PLL input. If
High
, the input
level is expected to be a LV-TTL signal, because the switching level for a
LV-TLL signal is 1.5 V. CMOS-TTL works as well. If
Low
, the PLL input
can be sinusoidal wave with 100 mVpp minimum amplitude, which
oscillates around zero.
Green
– opens a sub-menu. The entries in this menu are not stored. After restart,
the brightness will be set to its full intensity and the auxiliary channels will be on
ON state. Entries:
Aux
(
On
/
Off
): switches the power supply of the analogue input and
output channels on or off.
Display : is the brightness of the screen. 15 equals maximum and 0
switches it off.
HD : Enters a sub-menu in which the data files stored on the internal hard disk can
be
copied to the USB flash drive by
> USB
(
Do
) or
deleted all by
Clear
. (
Do
)
Update
(
?
): The
eLockIn
software can be updated with this function. Store the
update files on a USB flash drive in a directory called “update”
(case sensitive)
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