Instrument Tour
R&S
®
ESW
54
Getting Started 1328.4922.02 ─ 06
5.2.7
Sync Trigger Input and Output
The "Sync Trigger Input / Output" connectors allow you to synchronize several
devices (for example two R&S
ESWs) with respect to the trigger signal, but also
the reference frequency. A 100
MHz signal can be output as a trigger or reference
signal to another device, and an external trigger or reference signal can be
received at the input connector by the R&S
ESW.
5.2.8
AUX Port
The 9 pole SUB-D male connector provides control signals for controlling external
devices. 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 fil-
ter
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 instru-
ment 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.
The Rear Panel
