Applent Instruments AT851, Руководство пользователя

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19 Basic Operation
Example: press key
1 . 2
Step 3 Press
Enter
to confirm this input
Method 2: Setup the current value by using knob.
The value can be continually changed from the previews value according the knob
rotation.
The knob rotation magnification can be set in Menu-Knob item.
4.1.2 Constant Voltage Mode (CV)
In CV mode, AT851 will sink enough current to control the source voltage to the
programmed value.
AT851 acts as a shunt voltage regulator when operating in the CV mode.
Figure 4-2
Constant Voltage Mode
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Load
I )
Input Voltage
AT851 provides two methods to set the voltage value by using the numeric keypad and
the knob.
Method 1: Setup the voltage value by using the numeric keypad
Table 4-2 Setup voltage (V-Set) by using numeric keypad
Procedure Operation details
Step 1 Press
V-Set
If the mode is not the CV mode, press
V-Set again.
Step 2 Enter a new value using numeric keypad or rotary the knob to adjust the value.
Example: press key
1 0 . 5
Step 3 Press
Enter
to confirm this input
Method 2: Setup the voltage value by using knob.
The value can be continually changed from the previews value according the knob
rotation.
The knob rotation magnification can be set in Menu-Knob item.
4.1.3 Constant Power Mode (CP)
In CP mode, AT851 will consumption power accordance with the programmed value
regardless of the input voltage.
According to the formula P=U*I, if input voltage (U) increases, the current (I) must be
decreased to satisfy the constant power value.