Technical data

Getting Started 1

U1401A User’s and Service Guide 11

[1]

When the HOLD key is pressed for more then one second, its function depends on the present state of the instrument. If the

instrument is presently in the data hold mode, pressing this key for more than one second will exit the data hold mode; if the

instrument is not in the data hold mode, pressing this key for more than one second will enter or exit the dynamic recording

mode.

[2]

Only applicable when the instrument is in the dynamic recording mode.

[3]

Shifted functions.

7 SHIFT Enables and disables the shifted functions of

the other keys

Toggles backlight ON/OFF

[3]

MODE Selects output modes for constant

voltage/constant current, autoscan and

autoramp.

Selects frequency (Hz), duty cycle (%), pulse

width (ms), and level adjustments for square

wave output.

Enters the adjustment mode (for autoscan and

autoramp outputs).

[3]

Selects a digit or the polarity to be adjusted.

The selected digit/polarity will be flashing on

the secondary display.

—

[3]

Adjusts a digit or the polarity.

Press to adjust the selected digit or toggle the

output polarity.

—

[3]

OUTPUT Toggles the output state on and off.

indicates that the signal is being generated

and indicates that the output has been

disabled.

—

Table 1 - 4 Keypad functions (continued)

No. Key Function when pressed for less than one

second

Function when pressed for more than one

second