Instrument Identification; Manual Revisions; Firmware Revisions; Safety Considerations - Agilent Technologies 6571A Service Manual

Instrument Identification

The power supply is identified by a unique, two-part serial number, such as, US36320101. The items in this serial number
are explained as follows:
Item Description
US Indicates the country of manufacture, where US = USA.
3643 The year and week of manufacture or last significant design change. Add 1960 to the first two
digits to determine the year. For example, 36=1996. The last two digits specify the week of the
year.
0101 A sequential number assigned to each power supply.

Manual Revisions

This manual was written for power supplies that have the same serial prefixes (first part) as those listed on the title page and
whose serial numbers (second part) are equal to or higher than those listed in the title page.
1) If the serial prefix of your supply is higher than that shown in the title page then the supply was made after
Note
the publication of this manual and may have hardware and/or firmware differences not covered in the
manual.
2) If they are significant to the operation and/or servicing of the power supply, those differences are
documented in one or more Manual Changes sheets included with this manual.
3) If the serial prefix on the power supply is lower than that shown on the title page, then the supply was
made before the publication of this manual and can be different from that described here. Such differences
are covered in Appendix A - Manual Backdating Changes.

Firmware Revisions

The power supply's firmware resides in the main board microprocessor chip and in ROM chips on the A2 GPIB and A1
Front Panel boards. You can obtain the firmware revision number as follows:
•
For a bench power supply, you will find the revision numbers printed on the label affixed to the integrated circuit.
•
For a GPIB system power supply, you can read the integrated circuit label as above, or query the power supply using
the GPIB *IDN query command (see Chapter 3 - Troubleshooting). Also, see Chapter 3, Firmware Revisions for the
actual Agilent BASIC program that does this.

Safety Considerations

This power supply is a Safety Class I instrument, which means it has a protective earth terminal. This terminal must be
connected to earth ground through a power source equipped with a 3-wire, ground receptacle. Refer to the "Safety
Summary" page at the beginning of this manual for general safety information. Before operation or repair, check the power
supply and review this manual for safety warnings and instructions. Safety warnings for specific procedures are located at
appropriate places in the manual.
8 Introduction