3Operating and Programming

L4400 Instrument Front Panel Overview

LXI instruments within the the L4400 family consist of the instrument carrier, an instrument sub- assembly, and if applicable, a wiring terminal block. The front panel of an L4400 instrument is shown in Figure 3- 1.

Power

Instrument sub-assembly

LAN Reset

Instrument carrier

Figure 3-1. L4400 Instrument Front Panel (L4421A shown).

The only time it is necessary to remove the instrument sub- assembly from the carrier is to attach a support sleeve to those sub- assemblies that use a wiring terminal block.

Chapter 1 contains information for removing the sub- assembly from the carrier and attaching the sleeve.

The LAN Reset Button

The LAN reset button allows you reset the instrument’s LAN configuration to its default state. Refer to “LAN Reset (Default) Configuration” in Chapter 2 for a listing of the default settings.

The Front Panel LEDs

The front panel LEDs:

ATTN

LAN

PWR

provide information on the status of the instrument. Table 3- 1 lists the instrument’s status conditions based on the color and functioning of the LEDs.

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L4400 User’s Guide

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Agilent Technologies manual L4400 Instrument Front Panel Overview, LAN Reset Button, Front Panel LEDs