Rohde & Schwarz SMB 100a - Info and Help System

R&S SMB Description of Individual Diagram Blocks
1407.0812.62 2.3 E-2
The internal modulation sources are configured in the Mod Gen block. The modulation inputs MOD
EXT and PULSE EXT at the front and rear of the instrument are provided for external amplitude,
frequency, phase and pulse modulation. AC or DC coupling for external feed is possible.
Modulation signals of up to two sources (internal and external source) can be combined for AM/FM and
PhiM modulation.
Available internal and external analog modulation modes are:
- Amplitude modulation (AM)
- Frequency modulation (FM)
- Phase modulation (PhiM)
- Pulse modulation (optional, PULSE)
Note:
For modulation modes that can be simultaneously used, refer to the R&S SMB data sheet.
The status display in the block shows the active modulation(s).
RF block
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.
RF settings include:
- Frequency and reference frequency
- Level settings; if required.
- Frequency and level sweep.
Note:
Numeric values for frequency and level are entered best and quickest with the aid of the FREQ and
LEVEL keys.
Info and Help System
The R&S SMB comprises a comprehensive info and help system. Context-sensitive help can be called
any time with the HELP key. The help system indicates the currently selected parameter and offers
additional services such as cross references, index and contents. The content of the help system
corresponds to the operating manual of the R&S SMB.
Warning and conflict messages caused by incorrect operation as well as further information are
displayed in the Info line. A complete list of existing conflicts is displayed when the
INFO key is
pressed. Additional information on entries can be requested from the help system. The history function
permits display of all messages.
Detailed operating instructions and an overview of menus follow in Chapter 3, "Manual Operation".
Menus and instrument functions are described in detail in Chapter 4, "Instrument Functions".