Extech Instruments PRC50, Руководство пользователя

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Page 10 PRC50-EN-V2.1 11/11
5.2 Sourcing DC Voltage
Step 1:
Use the 〔 V 〕 key to select the DC voltage source function and then select the desired range from 1000mV, 10V by
pressing the
〔
RANGE
〕
key. The default value, the unit of the selected source function, and the source DC Current range
will be displayed on the LCD.
Step 2:
Set the output value, digit by digit, using
〔
S
〕
/
〔
T
〕
keys.
Each pair of 〔
S
〕 / 〔
T
〕 keys corresponds to each digit of the LCD reading. Each press of the 〔
S
〕 / 〔
T
〕 key increases
or decreases the digit. Increasing the digit from 9 or decreasing it from 0 causes the digit to overflow or underflow, allowing
the output value to be set without interruption. Holding down the
〔
S
〕 / 〔
T
〕 key continuously changes the digit in question
quickly. The value won’t change if it is increased or decreased to the Maximum or Minimum value. Pressing the (ZERO) key
initializes the output set point to the default value (0).
Step 3:
Pressing the
〔
ON
〕
key causes the indicator on the LCD to change from ‘’OFF‘’ to ‘’ON ‘’. The calibrator sources the
present DC voltage between the output terminals.
Step 4:
To turn off the output, press the
〔
ON
〕
key again. The’’ OFF ‘’ icon appears on the LCD and no signals are sourced
between the terminals.
5.3 Sourcing DC Current
Step 1:
Use the
〔
mA
〕
key to select the desired source function 20mA. The default value and unit of the selected source
function will be displayed on the LCD.
Step 2:
Set the output value digit by digit using 〔
S
〕 / 〔
T
〕 keys.
Each pair of
〔
S
〕
/
〔
T
〕
keys corresponds to each digit of the LCD reading. Each press of the
〔
S
〕
/
〔
T
〕
key increases
or decreases the digit. Increasing the digit from 9 or decreasing it from 0 causes the digit to overflow or underflow, allowing
the output value to be set without interruption. Holding down the
〔
S
〕 / 〔
T
〕 key continuously changes the digit in question
quickly. The value won’t change if it is increased or decreased to the Maximum or Minimum value. Pressing the (ZERO) key
initializes the output set point to the default value (0).
Step 3:
Pressing the
〔
ON
〕
key causes the indicator on the LCD to change from ‘’OFF‘’ to ‘’ON ‘’. The calibrator sources the
preset DC current between the output terminals.
Step 4:
To turn off the output, press the 〔 ON 〕 key again. The’’ OFF ‘’icon appears on the LCD and no signals are sourced
between the terminals.