Specifications; Safety Considerations - HP 85020 A Operating And Service Manual

Model 85020A/B
General Information
SECTION I
GENERAL INFORMATION
1-1. INTRODUCTION
1-2. This manual contains operating and service information for
the Hewlett-Packard Models 85020A and 85020B Directional Bridges.
Section I includes specifications and supplemental performance
characteristics , safety considerations , instrum.ent identification,
description, and other basic information. Figure 1-1 shows the
Model 85020A in the accessory instrument case supplied with each
instrument. Figure 1-2 shows both the 85020A and the 85020B
Directional Bridges.
1-3, On the title page of this manual is a microfiche part
number. This number may be used to order 10- bv 15-centimeter (4-
by 6-inch) microfilm transparencies of the manual. Each microfiche
contains up to 60 photo duplicates of the manual pages. The
microfiche package also includes the latest Manual Changes
supplement as well as all pertinent Service Notes.
1-4. Refer any questions regarding this manual, the Manual
Changes supplement, or the instrument to the nearest HP
Sales/Service Office. Always identify the instrument bv model
number, complete name, and complete serial number in all
correspondence. Refer to the inside rear cover of this manual for
a worldwide listing of HP Sales/Service Offices.
1-5. SPECIFICATIONS
1-6. Specifications for the 85020A/B are listed in Table 1-1.
These specifications are performance standards or limits against
which the instrument may be tested. Table 1-2 lists supplemental
characteristics. These are not specifications but are intended to
provide information useful in applying the instrument by giving
typical but non-war ranted performance parameters.
1-7. SAFETY CONSIDERATIONS
1-8. The voltages present in the 85020A/B are not in a range to
warrant more than normal caution.
1-3