Rohde & Schwarz SME02 - Modulation; Modulation Sources; Table 2-1 Input Sockets for the Different Types of Modulation

Modulation Sources SME
1038.6002.02 2.50 E-13
2.6 Modulation
The SME offers the following modulations:
• Amplitude modulation (AM)
• Frequency modulation (FM) *
• Phase modulation (PM) *
• Pulse modulation (PULSE) *
• FM-stereo modulation (STEREO)
*
*
• VOR/ILS modulation (VOR, ILS-GS, ILS-LOC, MKR BCN) *
and the digital modulations:
• GMSK, GFSK, QPSK, FSK, FFSK, 4FSK and *
• Radiocommunication services ERMES, FLEX, REFLEX and POCSAG. *
Internal or external modulation sources can be used for all modulations.
2.6.1 Modulation Sources
Internal Modulation Sources
Internal modulation generators LF GEN1 and LF GEN2 are available for AM, FM and PM depending on
the equipment. For a more detailed description, cf. Section 2.6.2.1, LF Generator.
For internal pulse modulation, the instrument can be equipped with a pulse generator (option SM-B4).
For a more detailed description, cf. Section 2.6.2.5.1, Pulse Generator.
A PRBS generator with selectable sequence lengths and a data generator are available for the digital
modulations (cf. Section 2.6.3, Digital Modulation).
External Modulation Sources
The appropriate input sockets to the different modulations in the case of external supply can be taken
from table 2-1. DM (digital modulation) stands for GMSK, GFSK, QPSK, FSK, FFSK and 4FSK. External
AM, FM and PM can be AC or DC-coupled.
Table 2-1 Input sockets for the different types of modulation
Inputs
Modulation EXT1 EXT2 PULSE DATA CLOCK BURST
AM
X
FM1
XX
FM2
XX
PM1
XX
PM2
XX
PULSE
X
DM
XXX
*
Only with option