Calibration
3-10 Amplitude Modulation Tests
MG362x1A MM
PN: 10370-10386 Rev. B
3-27
AM SEN_DAC Setting (External Source LOG Mode)
Set AM_SEN_DAC to Y dB/V Mod Sensitivity
From 9 kHz to 31.25 MHz, AM_SEN_DAC at Y = AM_SEN_LOG_25M *Y *0.1(Y = 0 to 25 dB/V)
From > 31.25 MHz to < 2 GHz, AM_SEN_DAC at Y = AM_SEN_LOG_1G *Y *0.1 (Y = 0 to 25 dB/V)
From 2 GHz to Fmax, AM_SEN_DAC at Y = AM_SEN_LOG_4G *Y *0.1 (Y = 0 to 25 dB/V)
ALC Gain Calibration
This is an external calibration to set the ALC BW DAC on the ALC. For each frequency band’s max gain
frequency, adjust ALC BW DAC until gain is maximized, but less than the gain limit. Set up equipment as
shown in
Gain limit = 40 dB/V (20 dB/V for downconverter band)
1.
Set to ALC mode = internal closed loop.
2.
If step attenuator option installed put into decoupled mode.
3.
Set Power Level = 0 dB.
4.
Turn on AM Internal mode and Linear mode.
5.
Go to first frequency band of interest (see frequency plan for list of bands).
6.
Step output frequency by 100 MHz until max gain frequency in band of interest is found.
Gain can be calculated by adjusting the power up by 1 dB then measuring the voltage change
ALC_AMP_MON is the voltage of interest.
7.
Set Gain = 1 / (V1 – V0) [dB/V].
8.
Adjust ALC BW DAC to maximize gain while keeping it below gain limit. Record DAC value in
9.
Continue for all frequency bands.
Table 3-22.
ALC Gain Cal
Frequency Band
ALC BW DAC Value
HET/DC
SWF1
SWF2
SWF3
FEM
Содержание Rubidium MG362 1A Series
Страница 12: ...Contents 10 PN 10370 10386 Rev B MG362x1A MM ...
Страница 16: ...1 9 ESD Requirements General Information 1 4 PN 10370 10386 Rev B MG362x1A MM ...
Страница 30: ...2 6 RF Deck Assemblies Functional Description 2 14 PN 10370 10386 Rev B MG362x1A MM ...
Страница 66: ...3 11 FM and Phase Modulation Calibration Calibration 3 36 PN 10370 10386 Rev B MG362x1A MM ...
Страница 164: ...4 26 Pulse Modulation Tests with the 86100C Oscilloscope Performance Verification 4 98 PN 10370 10386 Rev B MG362x1A MM ...
Страница 292: ...B 5 Self Test Messages Instrument Messages B 8 PN 10370 10386 Rev B MG362x1A MM ...
Страница 293: ......