Operating Manual EMI TEST RECEIVER ESIB7 - Rohde & Schwarz

Contents - Maintenance and Instrument Interfaces
ESIB
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 ESIB 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.
In analyzer mode, the signal level at the IF output is 0 dBm for signals which correspond to the selected
reference level in the range from -60 dBm to +30 dBm. In receiver mode, the signal level is 0 dB for full
bar graph display (unit dBm) or 100 dBµV (unit dBµV).
Video Output (VIDEO OUT)
In analyzer mode, 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. When the ESIB is equipped with option ESIB-B1 the video output delivers a signal
which corresponds to the displayed video signal. The level scaling LIN or LOG is adapted to the display
in the signal analysis mode and to the selected detector (LIN with average-, quasi-peak-, AC video- and
RMS-detector, LOG with peak detector) in the receiver mode. The level range is always 100 dB.
Reference Output/Input (EXT REF IN/OUT)
When the ESIB 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 ESIB. 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
1088.7531.12 8.24 E-16