!A7 1ST L O

A l l

YTO~AMPLIFIER

AS V INCREASES -

A7 OUTPUT INCREASES

I ONLY ONE IST MIXER OUT

(A7J2) F O R H P 8561E.

sm66e

D I S T R I B U T I O N !

 

J41

SAMPLER OUT - 9 TO - 2 dBn

 

 

 

 

J 3 I

 

H I B A N D

+13 T O f16 d&n:

 

 

J 2

 

 

LO BAND +13 TO +16 d&n*

 

 

 

 

 

 

J5 I

1ST L O

O U T 1 4 . 5 T O 1 8 . 5

d&n

 

 

 

 

 

 

(A7J3 FOR

HP

8561E)

 

 

I

 

 

 

 

 

 

I

 

 

 

 

 

 

I

 

 

 

 

 

mm---

 

 

 

SCHEMAT I C

 

F--

 

 

 

 

- - - - - - - - - - -

-

-

- 3 -OF - 5 -

-

P / O A l 4 F R E Q U E N C Y III CONTROL

REF VOLTAGE

I -.l T O -.25 V O L T

I

-e--e----------w -i

Figure 12-3. A7 First LO Distribution Amplifier Drive

Control Latch for Band-Switch Driver

Refer to function block P on Al4 Frequency Control Schematic Diagram (sheet 3 of 5) in the

HP 8560 E-Series Spectrum Analyzer Component Level Information.

1.Connect the positive lead of a DVM to A14U417 pin 14 and the negative lead to A14J18 pin 6.

2.Set the HP 85623 to the following settings:

Center frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..300MHz Span . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OHz

3.The voltage should measure approximately 0 Vdc (TTL low).

4.Set the HP 85623 center frequency to 3 GHz.

5.The voltage should measure approximately f5 Vdc (TTL high).

12-12 RF Section

Page 438
Image 438
Agilent Technologies 856290216 Control Latch for Band-Switch Driver, A7 First LO Distribution Amplifier Drive