Instructions

7. Front Panel Operation

In this manual, front panel labels are shown as they appear, in capitals, e.g. LEVEL SELECT.

Individual key names are shown in bold, e.g.

Transient, and the blue soft-keys are referred to by

their present function, as labelled on the bottom line of the display, shown in bold italics, e.g.

Limits. Text or messages displayed on the LCD are shown in bold, e.g

. Enabled, Utilities.

7.1 Keys and ∆ Adjust

The front panel keys are divided into four areas:

① The numeric keys.

② The blue keys below the display - Used to configure the instrument through the menu

structure described in section 7.2.4.

③ The

CE key - Cancels the last numeric keystroke while the Home key cancels an entire menu

selection and returns to the home screen. The

Home key is also used for the ‘return to local’

request from digital remote control.

④ The three

LEVEL SELECT keys (A, B and Transient) - Determine which of the two level

settings is active, or engage the transient mode which switches between them. The associated

lamps indicate the presently active state; these keys are also used to return from external

analogue control to manual selection.

⑤ The

∆ ADJUST knob and its three associated keys (Levels, Off and Transient) - Used to

choose and modify the existing value of any one of the numeric parameters of the instrument.

⑥ The

ENABLE key in the INPUT section (referred to as the INPUT ENABLE key) - Controls the

load, with alternate presses switching between the conducting and non-conducting conditions.

The green lamp shows if the input is enabled; the yellow lamp reports if the power stage is

saturated, as described in the paragraph ‘Input Condition Lamps’ in the ‘Initial Operation’ section

6.8.