SMIQ Arbitrary Waveform Generator ARB
1125.5555.03 2.355 E-9
2.21.2.6 ARB MOD - IQ OUTPUT... Menu
Fig. 2-225 ARB MOD - IQ OUTPUT... menu
IQ OUTPUT...
Opens a window for entry of the IQ level and automatic level setting.
IQ LEVEL
Defines the operating mode for setting the IQ level.
AUTO The level is set automatically to a maximum sum vector
of 0.5 V for maximum input level of the IQ modulator.
The subsequent level entry is not effective.
IEC/IEEE bus command
:ARB:IQ:LEV:MODE AUTO
MAN
The level is set using the level entry below. The
instrument data can not be guaranteed for entry values
above 0 dB, since the output level is limited. However,
the signal-to-noise ratio, e.g., may thus be increased.
IEC/IEEE bus command
:ARB:IQ:LEV:MODE MAN
MAN LEVEL
Indicates the IQ level referred to maximum voltage.
Range: -6 to 3 dBfs
IEC/IEEE bus command
:ARB:IQ:LEV –2.5DB
IQ SKEW
Determines the delay between I and Q channel. Positive values
delay I against Q.
IEC/IEEE bus command
:ARB:IQ:SKEW –250ps
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