Agilent Technologies Agilent 4396B User Manual

Page 61

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Selecting

the

Input

The

analyzer

uses

three

inputs

for

network

measurements

(R,

A,

and

B).

Usually

,

the

R

input

accepts

the

RF

OUT

signal

directly

,

the

A

input

receives

the

re ection

signal

from

the

DUT

,

and

the

B

input

receives

the

transmission

signal

through

the

DUT

.

This

example

assumes

you

are

using

the

T/R

test

set.

Therefore

,

because

you

are

going

to

measure

the

transmission

characteristics

of

the

DUT

,

select

B/R

to

measure

the

ratio

of

B

and

R

inputs

.

When

you

use

the

S-parameter

test

set,

you

can

measure

the

forward

and

reverse

characteristics

of

a

2-port

device

without

reconnecting

the

inputs

.

In

that

case

,

select

S

21

for

a

transmission

measurement

in

the

forward

direction.

In

the

MEASUREMENT

block,

press

4

Meas

5 .

Press

F

FFFFFFFF

B/R

.

Press

F

FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF

Trans:FWD

S21

[B/R]

to

select

B/R

for

the

forward

direction.

Network

Analyzer

T

our

3-7