User`s guide

The 8360 series synthesized sweepers provide

extremely flat power at your test port, for testing

power sensitive devices such as amplifiers, mixers,

diodes or detectors. The user flatness correction

feature of the 8360 synthesized sweepers compen-

sates for attenuation and power variations created by

components between the source and the test device.

User flatness correction allows the digital correction

of up to 801 frequency points (1601 points via GPIB),

in any frequency or sweep mode (i.e., start/stop, CW,

power sweep, etc.). Using a power meter to calibrate

the measurement system, as shown in figure 1, a

table of power level corrections is created for the

frequencies where power level variations or loss occur

(see figure 2). These frequencies may be sequential

linear steps or arbitrarily spaced. To allow the

correction of multiple test setups or frequency

ranges, the user may save as many as eight different

measurement setups (including correction tables)

in the internal storage registers of the 8360.

This note illustrates how to utilize the user flat-

ness correction feature by providing step-by-step

instructions for several common measurement

examples.

Introduction

Figure 1. Basic system configuration using an 437B power meter

for automatic user flatness correction data entry

Figure 2. 8360 displaying the user flatness correction table