Instrument Tour
R&S
®
ESR
25
Getting Started 1316.3749.02 ─ 09
9 =
10 =
11 =
AC power supply and main switch
4.2.1
AC Power Supply Connection and Main Power Switch
The AC power supply connector and main power switch are located in a unit on
the rear panel of the instrument.
The main power switch works as follows.
●
Position "I": The instrument is supplied with power and in operation.
The OCXO reference frequency is warmed up.
●
Position "O": The instrument is disconnected from the AC power supply.
For more information see
Chapter 5.7, "Connecting the AC Power"
4.2.2
LAN
The LAN interface can be used to connect the R&S
ESR to a local network for
remote control, printouts and data transfer. The assignment of the RJ-45 connec-
tor supports twisted-pair category 5 UTP/STP cables in a star configuration (UTP
stands for
unshielded twisted pair
, and STP for
shielded twisted pair
).
4.2.3
VGA Interface
The female VGA connector is used to connect an external monitor. Instructions
on how to connect an external monitor are provided in
4.2.4
Ext Trigger / Gate In
The female connector for external trigger or gate input is used to control the mea-
surement by means of an external signal. The voltage levels can range from 0.5
to 3.5
V. The default value is 1.4
V. The typical input impedance is 10
kΩ.
Rear Panel View
