Instrument Tour
R&S
®
ESW
55User Manual 1177.6298.02 ─ 08
5.2.8 AUX Port
The 9 pole SUB-D male connector provides control signals for controlling external devi-
ces. The voltage levels are TTL compatible (max. 5 V).
Pin Signal Description
1 +5 V / max. 250 mA Supply voltage for external circuits
2 I/O Controls phase N
3 I/O Controls the 150 kHz highpass filter
4 I/O Controls phase L3
5 I/O not used
6 I/O Controls phase L1
7 I/O Controls phase L2
8 GND Ground
9 READY FOR TRIGGER Signal indicating that the instrument is ready to
receive a trigger signal (Low active = 0 V)
Short-circuit hazard
Always observe the designated pin assignment. A short-circuit can damage the port.
5.2.9 GPIB Interface
The GPIB interface is in compliance with IEEE488 and SCPI. A computer for remote
control can be connected via this interface. To set up the connection, a shielded cable
is recommended. For more details refer to "Setting Up Remote Control" in the User
Manual.
5.2.10 External Generator Control (Optional)
The optional "External Generator Control" provides an additional GPIB interface and
AUX port.
The GPIB connector can be used to connect an external generator to the R&S ESW.
The AUX port is required for TTL synchronization, if supported by the generator (see
Chapter 5.2.8, "AUX Port", on page 55).
For details on connecting an external generator see the "External Generator Control"
section of the R&S ESW User Manual.
The Rear Panel
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