Agilent Technologies 08495-90025 SWR Meter Range, Meter Indication dB Minimum, Maximum

Page 19

Operating Instructions

Procedure 1. Connect equipment as shown in Figure 4 on page 12 with the attenuator set to 0 dB attenuation.

2.Set the test oscillator to 0.3 Vrms at 1 kHz.

3.Set SWR meter range to 2 dB (expanded) [or for the 8494G/H to 10 dB (expanded)] and adjust its bandwidth to center of adjustment range. Fine tune oscillator frequency to obtain maximum meter indication.

4.Set attenuator and SWR meter range switch as listed in Table 4 and verify that SWR meter indicates within limits shown.

Table 4 Attenuator and SWR Settings

SWR Meter Range

 

Attenuation (dB)

 

 

 

Meter Indication (dB)

 

 

 

(dB)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Minimum

Actual

Maximum

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8494G/H

 

8495G/H

8494G/H

 

8495G/H

8496G/H

8494G/H

8495G/H

8494G/H

8495G/H

8494G/H

8495G/H

 

 

8496G/H

 

 

 

 

 

8496G/H

 

8496G/H

 

8496G/H

 

 

 

 

 

 

 

 

 

 

 

 

 

10

 

2

0

 

0

0

-

-

Set to 0.0

Set to 0.5

-

-

 

 

 

 

 

 

 

 

 

 

 

 

 

10

 

6

1

 

10

10

0.40

1.40

-

-

0.60

1.60

 

 

 

 

 

 

 

 

 

 

 

 

 

10

 

12

2

 

20

20

0.90

0.30

-

-

1.10

0.70

 

 

 

 

 

 

 

 

 

 

 

 

 

10

 

16

3

 

30

30

1.35

1.25

-

-

1.65

1.75

 

 

 

 

 

 

 

 

 

 

 

 

 

10 1

 

22

4

 

40

40

1.85

0.15

-

-

2.15

0.85

 

 

 

 

 

 

 

 

 

 

 

 

 

12

 

26

5

 

50

50

0.35

1.10

-

-

0.65

1.90

 

 

 

 

 

 

 

 

 

 

 

 

 

12

 

32

6

 

60

60

0.85

0.00

-

-

1.15

1.00

 

 

 

 

 

 

 

 

 

 

 

 

 

12

 

36 1

7

 

70

70

1.30

0.90

-

-

1.70

2.10

 

 

 

 

 

 

 

 

 

 

 

 

 

12 1

 

42 1

8

 

-

80

1.80

–0.15

-

-

2.20

1.15

14

 

46 1

9

 

-

90

0.30

0.75

-

-

0.70

2.25

14

 

52 1

10

 

-

100

0.80

–0.30

-

-

1.20

1.30

 

 

 

 

 

 

 

 

 

 

 

 

 

14

 

56 1

11

 

-

110

1.75

0.60

-

-

1.75

2.40

1. Adjust range by 2 dB, if needed, to obtain a on-scale indication.

8494/95/96G/H Operating And Service Manual 13

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Contents Agilent Technologies 8494/95/96G/H Attenuators Restricted Rights Legend What You’ll Find in This Manual… Certification Documentation Warranty WarrantySafety and Regulatory Information Service and SupportInstrument Markings Safety Earth Ground Before Applying PowerManual SpecificationOverview Instruments Covered byTypical Four Section Attenuator Schematic Diagram 8495G/H Attenuator Sections 8494G/H Attenuator Sections8496G/H Attenuator Sections 8496G/H Attenuator Switching OrderInstrument Options Option Connector DescriptionFrequency Range Attenuation SpecificationsAttenuation Accuracy Capability RF Power HandlingMaximum SWR Maximum Residual AttenuationCard Solenoid Cable ConnectorSection AttenOperating Value Physical CharacteristicsCharacteristic Instrument Dimensions Weight Depth x width x heightInitial Inspection Mating Connectors InstallationInstallation Instructions Operator’s Check Operating InstructionsDescription Meter Indication dB Minimum SWR Meter RangeMaximum Performance Tests AdjustmentsDescription Part Number Replaceable PartsTroubleshooting ServiceRepair To care for the device To disconnectReplacing Amphenol 7 mm Center Contact Replacing Connector Outer Shell Dimensions