Rohde & Schwarz SME02 - Page 113

SME Analog Modulations
1038.6002.02 2.67 E-13
CARRIER FREQ
KNOB STEP
Selection of the variation of the carrier frequency via the rotary knob.
DECIMAL Decimal variation according to the current cursor position.
DEFINED Variation in predefined steps according to the standardized VOR
transmitting frequencies (see table, values in MHz):
Note: If DEFINED is selected, the current RF frequency is automatically
switched over to the next VOR transmitting frequency according to the
table when switching on modulation VOR.
108.00 109.40 110.80 112.10 112.80 113.50 114.20 114.90 115.60 116.30 117.05 117.75
108.05 109.45 110.85 112.15 112.85 113.55 114.25 114.95 115.65 116.35 117.10 117.80
108.20 109.60 111.00 112.20 112.90 113.60 114.30 115.00 115.70 116.40 117.15 117.85
108.25 109.65 111.05 112.25 112.95 113.65 114.35 115.05 115.75 116.45 117.20 117.90
108.40 109.80 111.20 112.30 113.00 113.70 114.40 115.10 115.80 116.50 117.25 117.95
108.45 109.85 111.25 112.35 113.05 113.75 114.45 115.15 115.85 116.55 117.30
108.60 110.00 111.40 112.40 113.10 113.80 114.50 115.20 115.90 116.60 117.35
108.65 110.05 111.45 112.45 113.15 113.85 114.55 115.25 115.95 116.65 117.40
108.80 110.20 111.60 112.50 113.20 113.90 114.60 115.30 116.00 116.75 117.45
108.85 110.25 111.65 112.55 113.25 113.95 114.65 115.35 116.05 116.80 117.50
108.00 110.40 111.80 112.60 113.30 114.00 114.70 115.40 116.10 116.85 117.55
109.05 110.45 111.85 112.65 113.35 114.05 114.75 115.45 116.15 116.90 117.60
109.20 110.60 112.00 112.70 113.40 114.10 114.80 115.50 116.20 116.95 117.65
109.25 110.65 112.05 112.75 113.45 114.15 114.85 115.55 116.25 117.00 117.70
EXT AM [SENS. 1V/100%]
Switching on/off an external modulation signal via socket EXT1.
OFF External AM input EXT1 switched off.
ON External AM input EXT1 activated.
The sensitivity is 10 mV per percent modulation
depth.
IEC-bus command SOUR:VOR:SOUR INT2,EXT
Note: As automatic level monitoring of the external modulation
signal is switched off in this operating mode, there can be
an overmodulation as a function of the level of the
external signal without a corresponding caution message
being generated.
In order to avoid an overmodulation, the peak value of
the external signal is to be delimited corresponding to the
sum of the modulation depths of the remaining VOR
signal components.