Agilent Technologies E8362B Service Manual page 165

PNA Series Microwave Network Analyzers
E8362B, E8363B, E8364B
Table 5-5 AUX I/O Connector Pin Assignments
Pin Numbers Name
1 ACOM
2–3 Analog Out 2–1
4 No connect
5 DCOM
6–8 Pulse Out 3–1
9 +5 V
10 Pass/Fail Write
Strobe
11 Sweep End
12 Pass/Fail
13 Output Port Write
Strobe
14 Analog In
15 ACOM
16 Power Button In
17 DCOM
18 Ready for Trigger
19 External Trigger In
20 Footswitch In
21 +22 V
22–25 In/Out Port C0–3
Service Guide E8364-90026
DB-25 Male Connector
Function
0 V, ground reference for analog signals
−10 to +10 Vdc output, 10 mA max, Ro = 100 Ω
For future enhancements
0 V, ground reference for digital signals
TTL out, programmable pulse (for future use)
+5 Vdc output, 100 mA max.
TTL out, active low (1 μs min) indicates pass/fail line is
valid
TTL out, active low (10 μs min) indicates sweep is done
TTL out, latched, indicates pass or fail (programmable
polarity)
TTL out, active low (10 μs min) writes I/O port data
−10 to +10 Vdc input, Ri = 100k Ω
0 V, ground reference for analog signals
Open-collector input, active low replicates a power
button press
0 V, ground reference for digital signals
TTL out, low indicates ready for external trigger
TTL in, level trigger (width >1 μs), programmable
polarity
TTL in, active low (width >1 μs), triggers a
programmable event
+22 Vdc output, 100 mA max.
TTL I/O, general purpose
Theory of Operation
Source Group Operation
5-15