Instrument Tour
R&S
®
ESRP
31
Getting Started 1316.4697.02 ─ 07
4.2.10
USB
The rear panel provides two female USB connectors to connect devices like an
external keyboard or mouse. You can also connect a memory stick to save and
restore instrument settings and measurement data.
4.2.11
AUX Port
The 9 pole SUB-D male connector provides control signals for controlling external
devices. The voltage levels are of the TTL type (5
V).
Pin
Signal
Description
1
+5 V / max. 250 mA
Supply voltage for external circuits
2
I/O
Control 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.
4.2.12
OCXO option (R&S
FSV-B4)
This option generates a very precise 10
MHz reference signal. If installed, this
signal is used as an internal reference. It can also be used to synchronize other
connected devices via the REF OUT connector.
Rear Panel View
