Instrument Tour
R&S
®
Spectrum Rider FPH
26
Getting Started 1321.0996.02 ─ 09
Risk of electric shock
To avoid electrical shock the DC input voltage, you must never exceed the
value specified on the housing.
Risk of damage of the R&S Spectrum Rider
To avoid damage to the coupling capacitor, input attenuator or the mixer,
the DC input voltage must never exceed the value specified in the data
sheet.
4.2.2
BNC Connector
The BNC connector is located on the top of the R&S Spectrum Rider.
You can connect the BNC connector for various applications. It supports an exter-
nal trigger signal or an external reference signal.
When the BNC connector is configured as a trigger input, it controls the start of a
measurement. The trigger mode is selected in the "Sweep" menu, see
on page 41. The trigger threshold is similar to that of
TTL signals.
When the BNC connector is configured as reference input, you can apply a 10
MHz external reference signal to it for frequency synchronization. The external
reference label
is displayed at the top right corner of the trace window to indi-
cate that the reference signal is supplied via external signal input. The label turns
green when the reference signal is detected.
The level of the reference signal must be larger than 0 dBm. If there is no refer-
ence signal present at the BNC connector, the R&S Spectrum Rider displays an
Connectors of the R&S Spectrum Rider