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Calibration
3-10 Amplitude Modulation Tests
MG362x1A MM
PN: 10370-10386 Rev. B
3-23
AM_Cal_DAC Linear Calibration
Determine AM_Cal_DAC value to optimize linearity and distortion performance in Linear mode. Set up
equipment as shown in
Test Setup
Frequency = 25 MHz
Power Level = 6 dB below max specified leveled output power (Config and Freq dependent)
Atten mode = Atten Auto
Test Procedure
1.
Turn AM On. Select AM External source and Liner type.
2.
Set AM_REF_DAC to AM_INT.
3.
Connect waveform generator to the Synth AM Input and Multimeter thru A BNC-Tee.
4.
Set waveform generator to ±1.0V peak (2.0V pk-pk) and 1 kHz sinewave.
5.
Adjust amplitude until the AC voltage reading is 0.707 ±0.01V.
6.
Set AM_CAL_DAC to 580.
7.
Adjust AM_SEN_DAC until the first sideband suppression at ±1 kHz offset is:
20*log(0.9/2) = –6.9 ± 0.2 dBc.
8.
Measure second sideband suppression at ±2 kHz offset.
9.
to
with AM_CAL_DAC set to 600/620/640/660/680/700.
10.
Save AM_CAL_LIN_25M as the AM_CAL_DAC value that yields the max second sideband suppression.
Recored the value in
11.
Repeat Cal Procedure at 1 GHz and 4 GHz with corresponding Power Level and DAC name.
Table 3-18.
AM_Cal_DAC Linear Calibration
Name
Value
AM_SEN_LIN_25M
AM_SEN_LIN_1G
AM_SEN_LIN_4G
Summary of Contents for Rubidium MG362 1A Series
Page 12: ...Contents 10 PN 10370 10386 Rev B MG362x1A MM ...
Page 16: ...1 9 ESD Requirements General Information 1 4 PN 10370 10386 Rev B MG362x1A MM ...
Page 30: ...2 6 RF Deck Assemblies Functional Description 2 14 PN 10370 10386 Rev B MG362x1A MM ...
Page 66: ...3 11 FM and Phase Modulation Calibration Calibration 3 36 PN 10370 10386 Rev B MG362x1A MM ...
Page 292: ...B 5 Self Test Messages Instrument Messages B 8 PN 10370 10386 Rev B MG362x1A MM ...
Page 293: ......