Optional Rear Panel Connectors - R&S ESR Series User Manual

®
R&S ESR
AUX PORT
The 9 pole SUB-D male connector provides control signals for controlling external devi-
ces. The voltage levels are of the TTL type (5 V).
Pin
1
2
3
4
5
6
7
8
9
Short-circuit hazard
Always observe the designated pin assignment. A short-circuit can damage the port.
3.1.2.2

Optional Rear Panel Connectors

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 devi-
ces via the REF OUT connector.
Warm-up time for OCXO
When the instrument is switched on, the OCXO requires an extended warm-up time
(see data sheet).
User Manual 1175.7068.02 ─ 12
Signal
+5 V / max. 250 mA
I/O
I/O
I/O
I/O
I/O
I/O
GND
READY FOR TRIGGER
Front and Rear Panel View
Description
Supply voltage for external circuits
Control Phase N
Controls the 150 kHz highpass filter
Controls Phase L3
not used
Controls Phase L1
Controls Phase L2
Ground
Signal indicating that the instrument is ready to
receive a trigger signal (Low active = 0 V)
Quick Start
38