Table of Contents
Advertisement
Troubleshooting
A21 Radiated Input Board Assembly Troubleshooting
A21 Radiated Input Board Assembly Troubleshooting
The A21 Radiated Input Board Assembly is serviced as an assembly only; no
component level repair is supported. For details on the functionality of this
assembly see
Chapter 3, "Assembly
Diagrams"
for details.
There are a few functions that the A21 Radiated Input Assembly provides, that if
not functioning properly, could cause a failure in the instrument. They are:
•
Routes RF Signals to other boards
•
RF Gain
•
Step Attenuation
Routes RF Signals to other boards
When in "Filtered" mode the A21 Radiated Input Board Assembly receives its
input from SW1 Relay Switch. The A21 Radiated Input Board Assembly then
routes RF signals above 30 MHz to the A22 Radiated Filter Board Assembly, and
signals below 30 MHz to the A23 Conducted Input Board Assembly. The A21
Radiated Input Board Assembly also routes filtered RF Output signals to SW2
Relay Switch.
Refer to
Figure 2-18
and
Connector Name
Signal Description
A21-J3
Filtered RF Output Signal (Radiated and Conducted) to N9039A
Output
A21-J4
Unfiltered Conducted Signal Output
A21-J5
Unfiltered Radiated Signal Output
A21-J6
Filtered Radiated Signal Input
A21-J7
Filtered Conducted Signal Input
A21-J8
Unfiltered RF Input Signal (Radiated and Conducted) from
N9039A Input
72
Descriptions". Refer to
Figure 2-19
for connector locations.
Chapter 4 , "Block
Chapter 2
Advertisement
Table of Contents
Troubleshooting
