If Access Group (Option H11); A47 Rf Path Coupler; A48 Lo Path Coupler; A49 If Multiplexer Board - Agilent Technologies E8362B Service Manual

Theory of Operation

IF Access Group (Option H11)

IF Access Group (Option H11)
The IF access group is additional hardware included in the PNA that allows for external
connection to the internal IF path of the analyzer.
The following assemblies and components are included in the IF access group:
•

A47 RF Path Coupler

•

A48 LO Path Coupler

•

A49 IF Multiplexer Board

•

Rear-Panel Connections

— TEST SET DRIVERS
— PULSE IN
— 8.33 MHz IF IN
A47 RF Path Coupler
The A47 RF path coupler is located in the RF path of the PNA between the A12 source and
either the A21 SOMA 50 (for E8363/4B) or the A22 switch (for E8362B). A portion of the
RF signal is coupled off and delivered to the rear-panel TEST SET DRIVERS RF
connector.
A48 LO Path Coupler
The A48 LO path coupler is located in the LO path of the PNA between the A18 MA24 and
the A19 splitter. A portion of the LO signal is coupled off and delivered to the rear-panel
TEST SET DRIVERS LO connector.
A49 IF Multiplexer Board
The A49 IF multiplexer board provides the circuitry to allow the external pulse and IF
signals to be input.
Rear-Panel Connections
TEST SET DRIVERS: A portion of the RF path signal and the LO path signal is coupled off
and routed to the rear panel TEST SET DRIVERS RF and LO connectors. These
connectors provide access to the RF and LO signals for use by an external test set.
PULSE IN: An RF pulse input connection is provided for each of the four receiver channels
(A, R1, R2, and B) via four rear-panel connectors. These signals are routed to the A49 IF
multiplexer board where they can be switched into the signal path of each of the four
measurement channels.
8.33 MHz IF IN: An 8.33 MHz IF input connection is provided for each of the four receiver
channels (A, R1, R2, and B) via four rear-panel connectors. These signals are routed to the
5-26
PNA Series Microwave Network Analyzers
E8362B, E8363B, E8364B
Service Guide E8364-90026