5. DC Log Amplifier Adjustments

Equipment

Frequency synthesizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 3335A

Adapters

Type N (m) to BNC (f) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1250-1476

Cables

BNC,122cm(48in) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 10503A Test cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...85680-60093

 

 

A 5 I F

A 4 L O G A M P / C A L O S C

 

 

 

 

 

 

 

J9

 

 

 

 

 

 

 

J 7

 

 

 

 

 

 

 

R 8 2 6

 

 

 

 

 

 

R 4 4 5

J2

 

 

 

 

 

 

 

J 8

 

 

 

 

 

 

 

 

 

 

 

 

 

JIO

J 5

 

 

 

 

 

 

( R E V I S I O N

 

 

 

 

 

 

 

CONNECTOR)

Jl

 

 

 

 

 

 

 

 

 

 

 

 

 

Jll

J 4

 

 

 

 

 

 

 

J 4

 

 

 

 

 

 

R 5 4 4

 

 

 

 

 

 

 

 

 

 

 

 

J 3

 

 

 

 

 

 

 

J 3 '

R531-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

s j l l e

 

Figure 2-10. DC Log Adjustment Locations

 

 

Note

Adjustments should be made with all of the shields on and only after allowing

 

at least a 20 minute warmup.

 

 

A4 Limiter Phase Adjustment

1.Press (LINE] to turn the spectrum analyzer off. Remove the spectrum analyzer cover and place the spectrum analyzer in the service position as illustrated in Figure 2-9. See Figure 2-10 for adjustment location.

2.Connect the HP 3335A 50 R output to the spectrum analyzer 50 Q input. Press ILINE) to turn the spectrum analyzer on.

Adjustment Procedures 2-31

Page 71
Image 71
Agilent Technologies 856290216 service manual A4 Limiter Phase Adjustment, DC Log Amplifier Adjustments