Instrument Tour
R&S
®
ESW
48
User Manual 1177.6298.02 ─ 08
5.1.8
RF Inputs (50
Ω
)
The R&S
ESW provides two RF inputs for connection of a device under test (DUT) to
the R&S
ESW. The DUT is connected to the RF Input via cable and an approriate con-
nector (for example a male N connector).
The first RF Input supports a frequency range from 2
Hz to f
max
and an attenuation
range from 0
dB to 75
dB. The second RF Input supports a frequency range from 2
Hz
to 1
GHz and an attenuation range from 10
dB to 75
dB. Attenuation levels greater
than
10 dB at RF Input 2 are only possible when the pulse limiter is not active (refer to
the User Manual for more information).
Risk of instrument damage
Do not overload the RF input. For maximum allowed values, see the data sheet.
For AC-coupling, a DC input voltage of 50
V must never be exceeded. For DC-cou-
pling, DC voltage must not be applied at the input. In both cases, noncompliance will
destroy the input mixers.
When measuring unknown signals, do not use a 0
dB attenuation level. Otherwise, the
input mixer may be damaged or destroyed.
When measuring unknown signals on the second RF input, turn on the pulse limiter
feature. Otherwise, the input mixer may be damaged or destroyed in case of high
power signals.
5.1.9
Trigger Input and Output
The female BNC connector labeled "Trigger Input" allows you to receive an external
trigger signal.
The female BNC connector labeled "Trigger Input / Output" allows you to receive an
external trigger signal or send a trigger signal to another device.
When you are using the connector as a trigger input, you can apply voltages in the
range from 0.5
V to 3.5
V (the default value is 1.4
V). The typical input impedance is
10
k
Ω
.
When you are using the connector as a trigger output, the TTL compatible signal is
transmitted (0
V / 5
V).
Note that you can find another connector for trigger input and output on the rear panel.
For more information about controlling and configuring trigger input and output, refer to
the User Manual.
5.1.10
Navigation Control
Navigation control consists of a rotary knob and cursor keys. These keys allow you to
navigate within the display or within dialog boxes.
The Front Panel
