5-14
Service Guide E8364-90001
Theory of Operation
PNA Series Microwave Network Analyzers
Source Group Operation
E8362A, E8363A, E8364A
Table 5-5
AUX I/O Connector Pin Assignments
DB-25 Male Connector
Pin Numbers
Name
Function
1
ACOM
0 V, ground reference for analog signals
2–3
Analog Out 2–1
−
10 to +10 Vdc output, 10 mA max, Ro = 100
Ω
4
No connect
For future enhancements
5
DCOM
0 V, ground reference for digital signals
6–8
Pulse Out 3–1
TTL out, programmable pulse (for future use)
9
+5 V
+5 Vdc output, 100 mA max.
10
Pass/Fail Write
Strobe
TTL out, active low (1
µ
s min) indicates pass/fail line is
valid
11
Sweep End
TTL out, active low (10
µ
s min) indicates sweep is done
12
Pass/Fail
TTL out, latched, indicates pass or fail (programmable
polarity)
13
Output Port Write
Strobe
TTL out, active low (10
µ
s min) writes I/O port data
14
Analog In
−
10 to +10 Vdc input, Ri = 100k
Ω
15
ACOM
0 V, ground reference for analog signals
16
Power Button In
Open-collector input, active low replicates a power
button press
17
DCOM
0 V, ground reference for digital signals
18
Ready for Trigger
TTL out, low indicates ready for external trigger
19
External Trigger In
TTL in, level trigger (width >1
µ
s), programmable
polarity
20
Footswitch In
TTL in, active low (width >1
µ
s), triggers a
programmable event
21
+22 V
+22 Vdc output, 100 mA max.
22–25
In/Out Port C0–3
TTL I/O, general purpose
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 ...