SMIQ Fading Simulation
1125.5555.03 2.85 E-9
2.9.5 Test procedure
The following settings can be used to demonstrate how Option SMIQB49 functions:
Settings on SMIQ
General
Frequency 30 MHz
Level -10 dB
Digital Modulation (DIGITAL MOD)
STATE ON
SOURCE Data List
LIST 1000 0000 0000 0000 0000 0000 0000 0000 (32 bits)
MODULATION ASK
SYMBOL RATE 1 000 000 sym/s
Fading Simulation
MOVING DELAY ON
Reference Path
Path Loss 0 dB
Delay 0
µs
Moving Path
Path Loss 6.0 dB
Delay Mean 5.0
µs
Delay Variation 5.0
µs
Variation Period 10.0 s
Settings on the oscilloscope (BW > 100 MHz)
Vertical 50 mV/div, at 50 Ω
Horizontal 2
µs /div
Trigger level 100 mV
The test result shows a high pulse (about 150 mV), and next to it a pulse which is half as high and
moves from one side to the other accordingly to the setting
Delay Variation or Variation Period.
Fig. 2-46 Pulse on Oscilloscope
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