Rohde & Schwarz 1065.6000.20, Руководство по эксплуатации

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Contents - Maintenance and Instrument Interfaces FSE
1065.6016.12 8.24 E-15
AF-Output (AF OUTPUT)
A miniature telephone jack can be used at the AF OUTPUT connector to connect an external
loudspeaker, a headphone set or, e.g., a LF voltmeter. The internal resistance is 10 ohms and the
output voltage can be controlled in the MARKER DEMOD menu. When a jack is plugged in, the internal
loudspeaker is automatically turned off.
IF Output 21.4 MHz (21.4 MHz OUT)
The 21,4 MHz IF signal of the FSE is available at the IF 21.4 MHz OUT BNC connector. The bandwidth
corresponds to the selected bandwidth for a resolution bandwidth between 2 kHz and 10 MHz. For a
resolution bandwidth below 2 kHz, the bandwidth of the output is 5 kHz.
The signal level at the IF output is 0 dBm for signals which correspond to the selected reference level.
Video Output (VIDEO OUT)
The video output delivers the logarithmic envelope curve of the IF signal independent of the level scaling
on the display screen (linear or logarithmic). The bandwidth of the video signal always corresponds to
one-half of the IF bandwidth and is not limited by the video filter in the measurement path.
Reference Output/Input (EXT REF IN/OUT)
When the FSE is operated with the internal reference, the internal 10 MHz reference signal is also
available at the REF IN/OUT connector and thus provides the capability of, e.g., synchronisation of
external instruments to the FSE. The level is 1 V RMS at 50 ohms source impedance.
For operation with an external reference, this connector becomes an input connector. The internal
reference oscillator is then synchronised to the reference applied to the connector. The reference
frequency can be between 1 and 16 MHz in 1 MHz steps. The necessary level is > 0 dBm.
The selection of internal or external references takes place in the SETUP menu.
Sweep Output (SWEEP)
The SWEEP BNC connector delivers a saw-tooth voltage between 0V and + 10 V which, for the
frequency spectrum display, is proportional to the instantaneous frequency. The selected start frequency
corresponds to a voltage of 0V and the stop frequency corresponds to a voltage of +10 V.
External Trigger Input (EXT TRIGGER/GATE)
The EXT TRIG/GATE connector is used for controlling the measurement via an external signal.
Trigger voltage range:: -5 V ... +5 V
Noise Source Control (NOISE SOURCE)
Using the NOISE SOURCE connector, an external noise source can be switched on/off, in order, e.g., to
measure the noise figure of Units Under Test (UUTs). Usual noise sources require a +28 V signal to be
turned on. At 0 V, they are turned off. These switching voltages are delivered by the connector.