Revisions; Manual Revisions; Firmware Revisions; Electrostatic Discharge - Agilent Technologies 6631B Service Manual

System dc power supply

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1 – Introduction

Revisions

If changes have been made to your power supply since the publication of this manual, a yellow Manual

Change sheet may be supplied with the manual. It defines the differences between your power supply and

the unit described in this manual. The yellow change sheet may also contain information for correcting

errors in the manual. Note that because not all changes to the product require changes to the manual, there

may be no update information required for your power supply.

You can obtain the firmware revision number by either reading the integrated circuit label, or query the dc

power supply using the GPIB *IDN?' query command (See Chapter 3, ROM Upgrade).

CAUTION:

The dc power supply has components that can be damaged by ESD (electrostatic

discharge). Failure to observe standard antistatic practices can result in serious

degradation of performance, even when an actual failure does not occur.

When working on the dc power supply, observe all standard, antistatic work practices. These include, but

are not limited to:

—

Working at a static-free station such as a table covered with static-dissipative laminate or with a

conductive table mat (Agilent P/N 9300-0797, or equivalent).

—

Using a conductive wrist strap, such as Agilent P/N 9300-0969 or 9300-0970.

—

Grounding all metal equipment at the station to a single common ground.

—

Connecting low-impedance test equipment to static-sensitive components only when those

components have power applied to them.

—

Removing power from the dc power supply before removing or installing printed circuit boards.

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