Getting Started
R&S
®
ZNL/ZNLE
48
User Manual 1178.5966.02 ─ 19
4.2.2.4
Ref. In / Ref. Out
The Ref. In connectors are used to provide an external reference signal to the
R&S
ZNL/ZNLE.
The Ref. Out connectors can be used to provide a reference signal from the R&S
ZNL/
ZNLE to other devices that are connected to this instrument.
Various connectors are provided for different reference signals:
Connector
Reference signal
Usage
Ref. In
10 MHz
10 dBm
To provide an external reference signal on the
R&S
ZNL/ZNLE.
Ref. Out
10 MHz
10 dBm
To provide the internal reference signal from the
R&S
ZNL/ZNLE to another device continuously.
For the R&S
ZNL, this is also used to provide the
optional OCXO reference signal to another device.
4.2.2.5
Trigger In
Use the female Trigger In connector to input an external trigger or gate data. Thus, you
can control the measurement using an external signal. The voltage level is 1.4
V. The
typical input impedance is 10
kΩ.
4.2.2.6
Noise Source Control
The Noise Source Control female connector is used to provide the supply voltage for
an external noise source. For example, use it to measure the noise figure and gain of
amplifiers and frequency converting devices.
●
This connector is provided by the "Additional Interfaces" option R&S
FPL1-B5.
This option is not available for the R&S
ZNLE.
●
The Noise Source Control interface is only functional in Spectrum mode (option
R&S
ZNL3|4|6-B1)
Conventional noise sources require a voltage of +28
V to be switched on and 0
V to be
switched off. The output supports a maximum load of 100
mA.
4.2.2.7
IF/Video Output
The female BNC connector can be used for various outputs in the Spectrum applica-
tion:
●
Intermediate frequency (IF) output of approximately 20 MHz
●
Video output (1V)
Which output is provided is defined in the software ("Overview" > "Output" ).
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