2

Field-replaceable detector elements

In the event of diode burnout, field-replaceable detector

elements are available for economical customer repair.

The critical components are supplied (and tested) as an

integrated unit, with the mount playing only a minor role in

determining frequency response and SWR. The following

table lists field-replaceable detector modules that have

been tested to their respective specifications.

Table 1.

Agilent Model

Agilent replacement part number

423B

00423-60003

8470B

08470-60012

8472B

08470-60012

8473B

08473-80001

Option 8473B–001

08473-80002

Option 8473B–003

08473-80003

8473C

08473-80004

Option 8473C–001

08473-80005

Option 8473C–003

08473-80006

423B

8470B

RF connector

D

D

D

L

L

L

8472B

8473B/C

Figure 5. Drawing dimensions given

in specification table

Typical LBSD

detector

+1.00

-1.00

0.01

2

4

6

8

10

12

14

16

18

+0.75

-0.75

+0.50

-0.50

+0.25

-0.25

Frequency (GHz)

0

LBSD

specifications

Figure 2. Detector frequency response specifications

Typical LBSD

detector

1.8

1.0

0.01

2

4

6

8

10

12

14

16

18

1.7

1.1

1.6

1.2

1.5

1.3

Frequency (GHz)

1.4

LBSD

specifications

Figure 3. Detector SWR specifications

Typical

SWR for

LBSD

detector

models

2.0 Source

SWR

1.5 Source

SWR

0

1.0

1.2

1.4

1.6

1.8

2.0

0.2

0.4

1.0

0.6

Detector SWR

0.8

Figure 4. Measurement uncertainty due to detector source mismatch

Without

load

Square

law loaded

LBSD

LBSD

0.005

-50

-40

-30

-20

-10

0

0.05

0.5

500.0

5.0

Input power (dBm)

50.0

Figure 6. Typical detector square-law response