Service Guide E8364-90001
5- 11
PNA Series Microwave Network Analyzers
Theory of Operation
E8362A, E8363A, E8364A
Source Group Operation
A16 Test Set Motherboard
The A16 test set motherboard serves these functions:
• to act as an interface between the A15 CPU board and the auxiliary rear panel
interconnects.
• to provide ALC signals to the A21 SOMA 50 and to the A18 multiplier/amplifier.
• to route control signals to the signal separation group. Refer to
for more information.
Rear Panel Interconnects
The A16 test set motherboard includes the following rear panel interconnects.
TEST SET I/O
A DB-25 female connector that is used to control external test sets. The
external test set bus consists of 13 multiplexed address and data lines,
three control lines, and an open-collector interrupt line. Pin assignments
are listed in
Up to 16 test sets may be “daisy-chained” on the bus at one time.
The Test Set I/O is not compatible with 8753 network analyzer test sets.
HANDLER I/O
A rectangular 36-pin, female connector providing four independent parallel
input/output ports, nine control signal lines, one ground, and a power
supply line. This connector has Type 2 output pin assignments as listed in
All signals are TTL-compatible. Data input/output ports consist of two 8-bit
output ports (Port A and Port B) and two 4-bit bidirectional ports (Port C
and Port D).
Connector settings can be changed using SCPI and COM commands. The
settings are not accessible from the front panel.
AUX I/O
A DB-25 male connector that provides a variety of both analog and digital
input and output signals as described in
Summary of Contents for E8362A
Page 11: ...Service Guide E8364 90001 1 1 1 Safety and Regulatory Information ...
Page 19: ...Service Guide E8364 90001 2 1 2 General Product Information ...
Page 29: ...Service Guide E8364 90001 3 1 3 Tests and Adjustments ...
Page 79: ...Service Guide E8364 90001 4 1 4 Troubleshooting ...
Page 139: ...Service Guide E8364 90001 5 1 5 Theory of Operation ...
Page 169: ...Service Guide E8364 90001 6 1 6 Replaceable Parts ...
Page 215: ...Service Guide E8364 90001 7 1 7 Repair and Replacement Procedures ...
Page 287: ...Service Guide E8364 90001 A 1 A Error Terms ...
Page 303: ...Service Guide E8364 90001 B 1 B Option Enable Utility ...
Page 309: ...Service Guide E8364 90001 C 1 C Firmware Upgrades ...
Page 313: ...Service Guide E8364 90001 D 1 D Operating System Recovery ...