SME Analog Modulations
1038.6002.02 2.53 E-13
2.6.2 Analog Modulation
2.6.2.1 LF-Generator
The SME is equipped with a fixed-frequency generator as internal modulation source as a standard. The
generator supplies sinusoidal signals of the frequencies of 0.4, 1, 3 and 15 kHz.
In addition to the standard equipment, the SME can be equipped with the following optional
LF modulation sources:
• LF-generator, option SM-B2
• Multifunction generator, option SM-B6
It is possible to fit two optional modulation sources unless option SM-B3, pulse modulator, is fitted. If two
options are fitted, the access to the internal standard generator is eliminated. The different possibilities
of modulation generator fitting are visible from table 2-4:
Table 2-4 Modulation generators as component parts
LF-Generator 1 LF-Generator 2
Standard generator
---
Standard generator Option SM-B2, LF-generator
Standard generator Option SM-B6, multifunction generator
Option SM-B2, LF-generator Option SM-B2, LF-generator
Option SM-B2, LF-generator Option SM-B6, multifunction generator
The selection of the waveform and frequency of the internal modulation signals can be made in one of
the modulation menus ( AM, FM, PM) as well as in the LF-output menu.
Notes: - In conformance to the possibilities of the modulation generator options fitted, there are
differences in the modulation menus for AM, FM and PM.
- The following modulations cannot be set simultaneously and deactivate one another:
LFGEN SHAPE NOI and LF sweep.
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