HP 8340b Operating Instructions

START/CW/CF Frequency Display
DESCRIPTION
This display shows (in megahertz) either the start frequency, the CW frequency, or the CF (center
frequency) of the HP 8340B/41B depending on its current operating mode.
PANEL LAYOUT
START
CW
FREQUENCY MHz
CF
FUNCTIONS
One of three frequencies is shown in this display: Start, CW, or CF. Figure 3-7 explains the imple¬
mentation of these three functions.
This display can be blanked (turned off) by pressing [SHIFT] [CONT]. Although the display is blanked,
the Start, CW, or CF values can be changed by the same local or remote procedures that are used
when the display is active. Press [SHIFT] [CONT] again to turn the display on.
INDICATORS
START, CW, and CF: These three amber annunciators indicate which function value is shown in the
display.
DIAGNOSTICS
Press and hold [INSTR PRESET] to light the three annunciators, then release [INSTR PRESET] and
press [SHIFT] [FREE RUN] which will light every LED segment (“8888888888888 ”). Press [INSTR
PRESET] or cycle the POWER switch.
Figure 3-4. START/CW/CF Frequency Display
HP 8340B/41B
Operating Information
3-15

HP 8340b Specifications

General

Brand	HP
Model	8340b
Category	Inverter
Language	English