Keysight N5221A Service Manual page 144

Theory of Operation
Receiver Group Operation
Table 5-5 PULSE I/O Connector Pin Assignments
Pin Name
1 IFGateAin
2 IFGateBin
3 IFGateCin
4 IFGateDin
5 IFGateRin
6 DCOM
7 PulseSyncIn
8 RFPulseModIn
9 DCOM
10 Pulse1Out
11 Pulse2Out
12 Pulse3Out
13 Pulse4Out
14 NC
15 DCOM
5-22
DB-15 Female Connector
Description
IF pulse gate input A (TTL)
IF pulse gate input B (TTL)
IF pulse gate input C (TTL)
IF pulse gate input D (TTL)
IF pulse gate input R (TTL)
Digital ground
Pulse generator synchronization trigger input (TTL)
RF source pulse modulation drive input (TTL)
Digital ground
Programmable pulse train output #1 (TTL)
Programmable pulse train output #2 (TTL)
Programmable pulse train output #3 (TTL)
Programmable pulse train output #4 (TTL)
No connect
Digital ground
PNA Series Microwave Network Analyzers
Service Guide N5222-90001
N5221A/22A