HP 8340b Operating Instructions

Entry Display
DESCRIPTION
This display shows the active function and its present value, and contains the OVERMOD, REMOTE,
SRQ, FAULT, OVEN, EXT REF, and UNLK indicators.
PANEL LAYOUT
OVERMOD REMOTE SRO FAULT OVEN EXT REF UNLK
entry display
HP-IB RDR5 : I 9
FUNCTIONS
The most recently activated function and its present value is shown in this display. In local operation,
the most recently pressed function key is the active function and will remain active until superseded by
the pressing of another function key. The HP 8340B/41B will remember (for approximately three
years, or until the battery on the A60 processor board is changed) the activated function even when
the power is disconnected, and will display that function in the ENTRY DISPLAY when the power is
turned on. The HP-IB address ("HP-IB ADRS=19”) is displayed momentarily at power-on, followed
by a display of the active function.
In local operation, the active function can be changed by the rotary [KNOB], the [STEP] keys, or the
numerical keypad. First, press one of the function keys to make that function active and display its
present value in the ENTRY DISPLAY. Then, change the value of that function by using either the
[KNOB], the [STEP] keys, or the numerical keys (with a terminator key).
In remote operation, the ENTRY DISPLAY will show the last function programmed
ENTRY DISPLAY can be blanked (turned off) by pressing [SHIFT] [CONT], which turns off all of the
displays. The displays will remain blanked even when the function keys are pressed (although the
annunciators will change). To regain a live display, press [SHIFT] [CONT] again.
INDICATORS
ENTRY DISPLAY contains two types of indicators: amber identification annunciators, and red warn¬
ing annunciators.
REMOTE (amber) annunciator lights when the HP 8340B/41B is being remotely controlled by a com¬
puter. When REMOTE is lighted all front panel operations are disabled with three exceptions: The
POWER switch can only be locally operated, the rotary [KNOB] can be enabled by using the EK
programming code, and the [LOCAL] key will override the computer and restore local control (unless
the computer sent a LOCAL LOCKOUT command to the HP 8340B/41B, which disables the [LOCAL]
key).
Figure 3-6. Entry Display (1 of 2)
HP 8340B/41B
Operating Information
3-17

HP 8340b Specifications

General

Brand	HP
Model	8340b
Category	Inverter
Language	English