The signal path of the instrument is configured by installing a frequency option that comprises all required modules.
![]() | One of the following options must be installed.
See data sheet for detailed information. |
Up-to-date information is available at R&S SMC homepage on the internet http://www.rohde-schwarz.com/product/smc100a.html.
The internal modulation sources are configured in this block. Also, the "LF frequency sweep" can be activated here.
An internal LF generator is available as the internal source for the analog modulations AM, FM and PHiM. The used modulation shape is a sine wave signal.
The internal modulation signals are provided at the LF output at the front of the instrument. The LF output signal and the modulations sources for the analog modulations AM, FM and PhiM can be selected independently from each other.
A pulse generator provides single and double pulse modulation with selectable pulse widths and periods. The internal pulse generator signal is provided at the PULSE VIDEO output at the rear of the instrument.
The R&S SMC offers three different sweep types (frequency sweep, level sweep and LF sweep) to be activated alternatively. Each type has 6 modes which differ with respect to the sweep cycle mode (continuous, individual and step-by-step) and triggering mode (automatic, internal and external). In the "Mod Gen" block, the LF sweep is configured. Frequency and level sweep settings are accessed via the "RF" block.
The status display in the block shows whether LF generator and/or a sweep are active. The selected internal LF generator and/or noise source are switched on or off with the TOGGLE ON/OFF key.
The internal and external analog modulations are configured and activated in this block. The MOD ON/OFF key switches the active modulation(s) on/off.
The internal modulation sources are configured in the "Mod Gen" block. External amplitude, frequency or phase modulation signals can be fed in at the input connector MOD EXT at the front of the instrument. An external pulse signal is fed in via the BNC connector PULSE EXT at the rear of the instrument. AC or DC coupling for external feed is possible.
- Amplitude modulation (AM)
- Frequency modulation (FM)
- Phase modulation (PhiM)
- Pulse modulation (Pulse)
Note: For modulation modes that can be simultaneously used, refer to the R&S SMC data sheet.
The status display in the block shows the active modulation(s). Use the TOGGLE ON/OFF key to switch the active modulation of the block on or off.
In this block, the RF parameters and frequency/level sweep settings are set.
The active sweep is displayed in the block. The RF ON/OFF key switches the RF signal on and off. When the signal is switched off, the switch before the RF output symbol is open.
- Frequency and reference frequency
- Level settings; if required.
- NRP-Z Power Viewer using power sensors
- Frequency and level sweep
The RF 50 OHM output connector at the front of the instrument provides the RF signal. An external trigger/gate signal for sweeps is input via the INST TRIG connector at the rear of the instrument
Note: Frequency and level are set fast with the aid of the FREQ and LEVEL keys.
Use the TOGGLE ON/OFF key to switch the RF output on or off.
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