Caution Use of an active probe, such as an HP 85024A, with another spectrum analyzer is recommended for troubleshooting the RF circuitry. If an HP

1120A Active Probe is being used with a spectrum analyzer, such as the HP 8566A/B, HP 8569A/B and the HP 8562A/B, having dc coupled inputs, either set the active probe for an ac coupled output or use a dc blocking capacitor (HP 11240B) bet ween the active probe and the spectrum analyzer input.

Troubleshooting Using the TAM

When using Automatic Fault Isolation, the TAM indicates suspected circuits that need to be manually checked. Use Table 11-2 to locate the manual procedure.

Table 11-l lists assembly test connectors associated with each Manual Probe Troubleshooting test. Figure 11-l illustrates the location of A15’s test connectors.

A l 4

A l 5

F R E Q U E N C Y

R F

C O N T R O L

 

 

3901

 

(REVISION

J5Ol J304

J502 C O N N E C T O R )

 

J 7

J23

J 1 7

J 1 5

 

 

 

JZOO ’

J302

J16

J18

.J19

( R E V I S I O N

 

 

J602 /

C O N N E C T O R )

 

 

Jlo’l A15AZJl J400 3601 J801

S K 1 1 1 4

Figure 11-l. Al4 and Al5 Test Connectors

11-2 RF Section