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2 Interfaces
2.1 Front Panel
The front panel of SE1022D is shown in Fig.8.
Fig.8 Front Panel of SE1022D
Display
The SE1022D uses a 5.6-inch TFT-LCD for display and interactive control. Display
resolution is 640
×
480. 8 levels of background brightness are available, which is set in
the [SYSTEM] sub-menu. The measurement results are displayed at the left of the
screen. It can provide single or double area for display. Otherwise, each area can display
number, XY coordinates and polar coordinates. The right of the screen is used to choose
and modify control conditions of measurement.
Soft Keys
There are 5 soft keys on the right side of the display screen. The soft keys’ functions
change with the current menu. In general, these soft keys have two main functions, one is
to choose different setting options, and another is to highlight some parameters and then
use the knob or keyboard to input. For all functions, soft key only work with parameters
that are adjacent to it.
Spin Knob
The knob is used to adjust parameters which are highlighted. Most parameters can be
adjusted by the spin knob.
Keyboard
The keyboard consists of 3 groups of buttons. The [ENTRY] area is used to input the
highlighted parameters by data forms. The [MENU] area is used to change the parameter
list at the right side of the screen. And it provides 10 different function menus. The
[CONTROL] area provides ancillary functions for measurement, like [CURSOR].
BNC Connectors
REF IN
The reference input can be a sine wave or a TTL pulse. When input is a sine wave, the input
impedance is 1M
Ω
AC coupled. For low frequencies (<1Hz), it is necessary to use a TTL
reference signal.
SIGNAL IN
There are three signal input modes, single-ended mode (A), differential mode (A-B) and
current signal mode(I).The lock-in uses the IN+ input in single-ended mode. In differential
mode, the differential signal between input IN+ and IN- is measured. When measuring