Technical data

Calibrator Output Operations 2

U1401A User’s and Service Guide 29

Constant Voltage Operation

The U1401A can generate a constant voltage output in two

different ranges, namely ±1.5 V and ±15 V.

To select the constant voltage output function:

1 Turn the rotary switch to any one of the (constant

voltage output) positions.

2 Press SHIFT to access the shifted operations of the keypad.

The annunciator will appear on the display.

3 Press MODE to cycle through ±1.5 V, ±15 V, ±1.5 V,

±15 V, ±1.5 V, and ±15 V output

modes. Select either ±1.5 V or ±15 V for constant output

(or steady output, as opposed to autoscan or autoramp

outputs, which will be discussed under “Memory

Generation” on page 31), depending on the voltage range

you require.

• Unlike the autoscan and autoramp modes, there is no

special annunciator on the display to indicate constant

voltage (CV) operation.

4 With the instrument in standby mode (you should see the

annunciator on the display; if not, press OUTPUT), you

can adjust the amplitude of the output by pressing

and to select the digit to be adjusted, and then

pressing and to adjust the value of the selected

digit.

5 Press OUTPUT to start the source output. The

annunciator will appear on the display.